🇲🇽 2026 Mexico IVA Calculator: SAT VAT, Retenciones & Saldo a Favor
The only free English-language Mexico IVA calculator featuring cash-basis monthly reconciliation (IVA trasladado vs. acreditable), 2026 digital platform retenciones, the Zona Libre de la Frontera (ZLF) 8% stimulus, DIOT (Declaración Informativa) batching, IMMEX Tasa 0%, saldo a favor devoluciones (refunds), and a CPA-ready SAT Compliance Report PDF.
Enter your monthly cash-collected sales by rate and cash-paid supplier IVA to compute your exact net IVA payable or saldo a favor — the calculation that drives your monthly SAT declaration.
| Category | Rate | LIVA Article | Input IVA? |
|---|
Select your seller type and enter monthly platform sales to see how much IVA and ISR the platform withholds, your actual net cash received, and how to handle the withholding in your monthly SAT return.
| Description | Base | Rate | IVA | Total |
|---|
Select seller and buyer states to verify 8% border zone eligibility — then use the invoice builder to create mixed-rate invoices with multiple line items at different IVA rates.
| DIOT Category | Supplier Count | Total IVA (MXN) | Flag |
|---|
Enter supplier payments for DIOT prep, model IMMEX certification benefit, plan your saldo a favor refund strategy, and calculate Nota de Crédito IVA adjustments for returns and discounts.
Any business or individual with IVA obligations preparing their monthly SAT declaration.
Businesses unsure whether their product is 16%, 8%, 0%, or exempt before issuing an invoice.
Amazon MX, Mercado Libre, Rappi, Uber Eats, or Shopify sellers needing to understand platform withholding.
Companies in Tijuana, Juárez, Monterrey border area, or Matamoros verifying 8% eligibility and building mixed-rate invoices.
IMMEX-certified manufacturers, companies with large supplier payments, or businesses with saldo a favor to recover.
Contadores públicos who need a fast calculation check, client-ready PDF report, or DIOT supplier summary before filing.
Enter your RFC (taxpayer ID) and select the month/year. These appear on the PDF compliance report but don’t affect the calculation.
Enter the base amount (excluding IVA) of cash you actually received from clients on standard-rate sales this month. Do not include the IVA portion — only the pre-IVA sale value.
Border zone businesses only. Enter base amount of cash collected on 8% border stimulus sales. Leave at 0 if you don’t operate in a qualifying border municipality.
Enter cash received on zero-rated sales: exports, unprocessed food, medicines, books. These generate output IVA of MXN $0 — but still allow you to recover input IVA on related costs.
Cash received on exempt transactions (residential rent, medical services, land sales). These appear in the return but generate no recoverable IVA — report for completeness only.
If Amazon MX, Mercado Libre, or other platforms already remitted IVA to SAT on your behalf, enter that amount here so it’s deducted from your net IVA liability.
Enter the IVA portion (not the base) of invoices you actually paid in cash to your suppliers this month. This is your IVA acreditable — it reduces your tax liability.
If last month’s return showed a credit balance (saldo a favor) that you’re carrying forward instead of requesting a refund, enter it here to apply it against this month’s liability.
Choose the category that best matches your product or service from the dropdown menu. The list covers 80+ categories across food, health, real estate, services, digital, and more.
Enter the pre-IVA base amount for the transaction. The calculator will compute the IVA amount and total invoice value.
Toggle between Interior Mexico (16% standard) and Border Zone (possible 8%). Note: selecting Border Zone does not automatically grant 8% — the product must also qualify.
Choose between: Persona Moral (business with RFC), Persona Física (individual with RFC), No RFC, or Non-Resident. This determines your withholding rates — the 2026 reform now applies different rates to personas morales than before.
Enter the total face value of your platform sales before any withholding — the gross amount your customer paid. The calculator will compute all deductions.
Choose your platform (Amazon MX, Mercado Libre, Rappi, Uber Eats, Shopify, Other) and whether you’re selling physical goods, services, or digital products. ISR withholding rates vary by service type.
Both parties must be located in a qualifying border municipality. Select the state for both seller and buyer from the dropdown lists.
Some categories never qualify for 8% — digital services, real estate, and exports are excluded even in border zones. The calculator blocks invalid combinations.
Goods must be physically delivered inside the border zone. If delivery is outside — even between two border-zone parties — 16% applies.
| Description | Base | Rate | IVA | Total |
|---|---|---|---|---|
| Product A | MXN $50,000 | 16% | MXN $8,000 | MXN $58,000 |
| Export item | MXN $30,000 | 0% | MXN $0 | MXN $30,000 |
| Rent (residential) | MXN $15,000 | Exempt | — | MXN $15,000 |
| Grand Total | MXN $95,000 | — | MXN $8,000 | MXN $103,000 |
Click “+ Add Supplier” to add each vendor you paid this month. Enter their name/RFC, amount paid, IVA paid, and supplier type (national, foreign, global vendor).
The calculator categorizes suppliers by DIOT type, flags global vendor usage, totals IVA by category, and exports a SAT-format CSV for upload.
Input your monthly temporary import value, IVA rate, working capital cost rate, bond fianza fee, and SAT refund turnaround time (weeks).
Compares the annual cost of financing the IVA float without certification vs. the bond fee cost — showing the exact peso saving from IMMEX certification.
Enter your monthly saldo a favor balance and choose your refund route: Standard (40-day SAT refund), Automatic Refund (20 days), or Offset against ISR liability.
For returns, discounts, or bonuses — enter original invoice amount and adjustment value to compute the exact IVA adjustment on the nota de crédito.
Mexico’s IVA is cash-basis. Entering your total monthly invoiced amounts instead of actual cash received overstates your IVA liability.
Classifying residential rent or medical services as zero-rated creates false input IVA credits that SAT will reject during audit.
The Input IVA Acreditable field requires the IVA portion only — not the full invoice amount including base price.
Businesses with a border RFC but making deliveries to interior Mexico still charge 16% — the delivery location controls the rate.
Digital platform sellers who don’t enter the IVA already withheld by the platform end up double-paying IVA to SAT.
IVA is only recoverable when the supplier invoice is actually paid. Recovering IVA on unpaid credit purchases is illegal and will create discrepancies at audit.
SAT cross-checks all CFDI numbers. If a supplier’s CFDI was cancelled or their RFC is inactive, your input IVA claim is rejected — even if you paid them.
Late IVA returns trigger automatic recargos (interest at 1.47% monthly) plus infraction surcharges of 20–75% of unpaid tax.
📋 Ley del IVA (LIVA) Rates 2026: 16%, 8% ZLF, 0% vs. Exempt
Complete guide to Mexico’s four IVA rate categories — 16% standard, 8% border zone, 0% zero-rated, and exempt — with full product/service tables, the critical zero-rated vs. exempt distinction, border zone eligibility rules, and 2026 digital platform updates.
Applies to most goods and services sold or provided in Mexico unless a specific exception applies.
Reduced rate for qualifying transactions where both seller and buyer are in the 11 border municipalities.
IVA charged at 0% but the transaction IS within the IVA system — input IVA on related costs is fully recoverable.
Outside the IVA system entirely — NO IVA charged and input IVA on related costs is a permanent, non-recoverable business expense.
- IVA on invoice = MXN $0 (but still an IVA taxable act)
- Input IVA you paid to suppliers is fully recoverable (acreditable)
- Creates saldo a favor — SAT owes you money back
- Must be declared in monthly IVA return (DIOT)
- Generates CFDI with IVA at 0%
- Exporter businesses often in permanent saldo a favor position
- Most favorable IVA treatment for businesses
- Examples: food exports, pharmaceutical drugs, agricultural inputs
- No IVA on invoice — completely outside the IVA system
- Input IVA on related costs is NOT recoverable — it’s a business expense
- No saldo a favor generated from exempt activities
- If you have mixed activities, must proportionally allocate input IVA
- CFDI issued with “Exento” in IVA field
- Proportional IVA credit rules apply if mixed with taxable sales
- Can significantly increase effective business cost
- Examples: residential rent, schools, hospitals, land, urban transport
| Category / Product / Service | IVA Rate | Border Zone | Input IVA Recoverable? | LIVA Article | Notes / Conditions |
|---|---|---|---|---|---|
| General merchandise, manufactured goods | 16% | 8% if qualifying | Yes | Art. 1 | Default rate for all taxable goods |
| Restaurant meals & cafeteria food | 16% | 8% if qualifying | Yes | Art. 1 | Prepared food sold at fixed location |
| Hotels & short-term lodging | 16% | 8% if qualifying | Yes | Art. 1 | Tourism, Airbnb, VRBO included |
| Professional services (lawyers, accountants, consultants) | 16% | 8% if qualifying | Yes | Art. 14 | Must be between taxable entities |
| Commercial & industrial rent (offices, warehouses, factories) | 16% | 8% if qualifying | Yes | Art. 19 & 20 | Furnished residential also 16% |
| Construction services (commercial & industrial) | 16% | 8% if qualifying | Yes | Art. 14 | Residential construction is exempt |
| Telecommunications (phone, internet, cable, satellite) | 16% | 8% if qualifying | Yes | Art. 1 | All providers including VoIP |
| Insurance premiums (property, auto, commercial) | 16% | 8% if qualifying | Yes | Art. 15 (exclusion) | Life insurance is exempt |
| Advertising & marketing services | 16% | 8% if qualifying | Yes | Art. 1 | Digital, print, outdoor all 16% |
| Software licenses (packaged / on-premise) | 16% | 8% if qualifying | Yes | Art. 1 | Streaming/SaaS: see digital platforms |
| Used vehicles (non-exempt private sales) | 16% | 8% if qualifying | Yes | Art. 27 | Applies to resale/dealer sales |
| Entertainment (concerts, sports events, theme parks) | 16% | 8% if qualifying | Yes | Art. 1 | Performing arts: partially exempt |
| Electricity (commercial & industrial consumption) | 16% | 8% if qualifying | Yes | Art. 1 | Residential under 45kWh: 0% |
| Banking & financial commissions (account fees, wire fees) | 16% | 8% if qualifying | Yes | Art. 15 (exclusion) | Interest: exempt. Fees/commissions: 16% |
| Cleaning, maintenance & security services | 16% | 8% if qualifying | Yes | Art. 1 | All professional services |
| Freight & logistics services (domestic) | 16% | 8% if qualifying | Yes | Art. 1 | International freight to/from Mexico: 0% |
| Digital services — non-resident platforms to Mexico consumers | 16% | No 8% for digital | Yes | Art. 18-B to 18-J | Netflix, Spotify, Google Play — withheld at source |
| Mining & oil/gas production services | 16% | 8% if qualifying | Yes | Art. 1 | Pemex contractors: standard 16% |
| Vehicle rental (cars, trucks, equipment) | 16% | 8% if qualifying | Yes | Art. 19 | All durations taxable |
| Pet services (veterinary non-medical, grooming, boarding) | 16% | 8% if qualifying | Yes | Art. 1 | Veterinary medical services: exempt |
| All 16% goods physically sold & delivered in border zone | 8% | Border only | Yes | Decreto DOF 2019 | Seller AND buyer must be in border zone |
| Restaurant meals in border municipalities | 8% | Border only | Yes | Decreto DOF 2019 | Physical delivery required in zone |
| Commercial rent in border zone cities | 8% | Border only | Yes | Decreto DOF 2019 | Premises must be in qualifying border area |
| Hotels in border zone cities (Tijuana, Juárez, Monterrey, etc.) | 8% | Border only | Yes | Decreto DOF 2019 | Guest must stay in qualifying municipality |
| Professional services performed in border zone | 8% | Border only | Yes | Decreto DOF 2019 | Service must be physically performed in zone |
| Unprocessed food: fruits, vegetables, grains, seeds | 0% | N/A — always 0% | Yes | Art. 2-A fr. I (a) | Must be unprocessed. Juices/chips = 16% |
| Raw meat, poultry, fish, seafood (unprocessed) | 0% | N/A — always 0% | Yes | Art. 2-A fr. I (a) | Processed deli meats = 16% |
| Milk (all types), cheese, eggs, butter | 0% | N/A — always 0% | Yes | Art. 2-A fr. I (a) | Dairy products in natural state |
| Patented pharmaceutical drugs (medicines) | 0% | N/A — always 0% | Yes | Art. 2-A fr. I (b) | Vitamins & supplements = 16% |
| Agricultural inputs: seeds, fertilizers, pesticides | 0% | N/A — always 0% | Yes | Art. 2-A fr. I (d) | For agricultural / livestock production only |
| Books, newspapers & magazines (printed) | 0% | N/A — always 0% | Yes | Art. 2-A fr. IV | Digital books: 16% |
| Water for human consumption (bottled and piped) | 0% | N/A — always 0% | Yes | Art. 2-A fr. I (c) | Carbonated water: 16% |
| Ice (for consumption) | 0% | N/A — always 0% | Yes | Art. 2-A fr. I (c) | Ice cream = 0% (basic food) |
| Exports of goods (all merchandise exported abroad) | 0% | N/A — always 0% | Yes | Art. 29 fr. I | Must have pedimento de exportación |
| Export of services (used entirely abroad by foreign resident) | 0% | N/A — always 0% | Yes | Art. 29 fr. IV | Technical services for foreign companies |
| IMMEX/Maquiladora temporary imports & productions | 0% | N/A — always 0% | Yes | Art. 29 + Decreto IMMEX | Requires valid IMMEX certification |
| Livestock and live animals (for food production) | 0% | N/A — always 0% | Yes | Art. 2-A fr. I (a) | Cattle, pigs, chickens, fish farming |
| Gold, silver, and platinum coins (Banxico legal tender) | 0% | N/A — always 0% | Yes | Art. 2-A fr. III | Centenarios, Libertad coins |
| Honey, natural food products in original state | 0% | N/A — always 0% | Yes | Art. 2-A fr. I (a) | Unprocessed natural honey only |
| Pet food (unprocessed only, e.g., raw meat diets) | 0% | N/A — always 0% | Yes | Art. 2-A fr. I | Processed kibble/canned = 16% |
| Residential property sale (houses, condos) | Exempt | Exempt everywhere | No | Art. 9 fr. I | Commercial property sale: 16% |
| Bare land sales | Exempt | Exempt everywhere | No | Art. 9 fr. I | Developed land may be 16% |
| Residential rent — unfurnished (under 3 × monthly UMA) | Exempt | Exempt everywhere | No | Art. 20 | Furnished housing: 16% |
| Medical & dental services (licensed professionals) | Exempt | Exempt everywhere | No | Art. 15 fr. XIV | Cosmetic surgery may be 16% |
| Hospital & clinic services (private) | Exempt | Exempt everywhere | No | Art. 15 fr. XIV | Non-medical hotel within hospital: 16% |
| Educational services (schools, tutoring, online courses — RVOE) | Exempt | Exempt everywhere | No | Art. 15 fr. IV | Must be authorized by SEP (RVOE) |
| Urban & suburban public passenger transport | Exempt | Exempt everywhere | No | Art. 15 fr. V | Taxis/Uber/Didi: 16% |
| Life insurance premiums | Exempt | Exempt everywhere | No | Art. 15 fr. IX | Property/auto insurance: 16% |
| Interest on loans (financial institutions) | Exempt | Exempt everywhere | No | Art. 15 fr. X | Fees/commissions: 16%. Interest only: exempt |
| Lottery tickets & gaming | Exempt | Exempt everywhere | No | Art. 15 fr. XI | Casino services: 16% |
| Salary & employment income (not a sale) | Exempt | Exempt everywhere | No | Art. 14 (exclusion) | Wages/salaries are not subject to IVA |
| Residential construction (housing for personal use) | Exempt | Exempt everywhere | No | Art. 9 fr. II | Developer-built housing for sale |
| Veterinary medical services (licensed vets) | Exempt | Exempt everywhere | No | Art. 15 fr. XIV | Grooming/boarding: 16% |
| Books sold with right of return guarantee (publishers) | Exempt | Exempt everywhere | No | Art. 9 (special) | Distinct from 0% book rule — consult SAT |
| Agricultural land sales and leasing for farming | Exempt | Exempt everywhere | No | Art. 9 & 20 | Must be for active agriculture/livestock use |
| Seller Type | IVA Rate on Sale | IVA Withheld by Platform | ISR Withheld | Net Cash Received | CFDI Required |
|---|---|---|---|---|---|
| Persona Moral — Valid RFC | 16% | 50% of IVA (8% of base) | 2.5% of gross sales | Gross − 8% IVA − 2.5% ISR | CFDI de Retenciones required |
| Persona Física — Valid RFC (goods) | 16% | 50% of IVA (8% of base) | 1% of gross sales | Gross − 8% IVA − 1% ISR | CFDI de Retenciones required |
| Persona Física — Valid RFC (services) | 16% | 50% of IVA (8% of base) | 2.1% of gross sales | Gross − 8% IVA − 2.1% ISR | CFDI de Retenciones required |
| Any Seller — No RFC | 16% | 100% of IVA (16% of base) | 20% of gross sales | Gross − 16% IVA − 20% ISR | No CFDI — high penalty risk |
| Non-Resident Foreign Seller | 16% | 100% of IVA withheld | Per treaty or 25% | Significantly reduced | Platform remits to SAT directly |
IVA applies to sales of goods, provision of services, leasing of property, and imports into Mexico (LIVA Art. 1). If none of these, IVA does not apply (e.g., salary, shareholder dividends, indemnities).
Check against the exempt list: residential property, residential rent (under threshold), medical services, authorized education, urban transit, life insurance, banking interest. If YES → Exempt, 0% IVA, input IVA not recoverable
Check for: unprocessed food, patented medicines, agricultural inputs, books/newspapers, water, exports, IMMEX productions. If YES → 0% IVA, input IVA fully recoverable
Verify seller’s RFC address, buyer’s location, and delivery point against the DOF 2019 Decreto border zone municipality list. Digital services, real estate, and non-border-zone buyers do not qualify. If ALL YES → 8% border rate
If the transaction is taxable (step 1), not exempt (step 2), not zero-rated (step 3), and not in the border zone (step 4), the standard 16% IVA rate applies. Invoice your customer at base price + 16% IVA and remit to SAT by the 17th of the following month.
The MXN $380,000 in medicines and basic food generated MXN $0 output IVA — but the business still paid MXN $18,500 in input IVA to suppliers. Since those purchases are tied to zero-rated sales, the input IVA is fully recoverable and correctly reduces the net liability. A business with only exempt sales would have lost that MXN $18,500 permanently.
A single invoice can legally carry multiple IVA rates. Tab 4’s Invoice Builder handles this automatically — no manual calculation needed. The effective blended rate on this invoice is 6.1% (MXN $33,600 / MXN $550,000), far below the standard 16% — a powerful B2B cash flow benefit for border-zone clients.
Before 2026, Personas Morales had no platform IVA withholding — they declared and paid all IVA themselves. Now platforms take MXN $64,000 upfront, plus MXN $20,000 ISR. The business still owes MXN $25,600 more to SAT. Total tax leakage: MXN $109,600 on MXN $800K sales. Register your platform accounts as Persona Moral to at least minimize ISR withholding vs. Persona Física digital services rate (5%).
Without IMMEX certification, Exportadora Norteña pays MXN $1.92M IVA upfront on every temporary import and waits 8 weeks for SAT to return it — costing MXN $443K/year in financing. With IMMEX, the IVA is suspended entirely — zero upfront cost, zero float. Annual saving: over MXN $1.9M. The IMMEX application cost is negligible by comparison.
| Revenue Stream | Rate | Input IVA? | LIVA Ref |
|---|---|---|---|
| UX consulting — Mexican clients | 16% | ✅ Yes | Art. 1 |
| Digital templates — Shopify MX | 16% | ✅ Yes | Art. 18-B |
| UX consulting — US clients (exported) | 0% | ✅ Yes | Art. 29-A |
Laura’s MXN $60,000 from US clients generated zero output IVA (0% on exported services) — yet she still recovered MXN $7,200 in input IVA on tools and software she bought to service those clients. This “asymmetry” — pay 0% out, recover full input IVA — is why export-heavy businesses are structurally more IVA-efficient. Laura should consider increasing her US client base to maximize this benefit.
| # | Business | Location | Total Sales | Output IVA | Input IVA Credit | Net IVA to SAT | Key Feature |
|---|---|---|---|---|---|---|---|
| 1 | Farmacia & Abarrotes San José | Guadalajara, Jal. | MXN $645K | MXN $40,000 | MXN $18,500 | MXN $21,500 ↑ Pay | Mixed 0%+16%+Exempt |
| 2 | Metalmex Industrial S.A. de C.V. | Tijuana, BC | MXN $550K | MXN $33,600 | MXN $22,400 | MXN $11,200 ↑ Pay | 8% Border + 0% Export |
| 3 | TechGadgets CDMX S.A. de C.V. | Mexico City, CDMX | MXN $800K | MXN $128,000 | MXN $102,400 | MXN $25,600 ↑ Pay | Platform 2026 Withholding |
| 4 | Exportadora Norteña S.A. de C.V. | Monterrey, NL | MXN $4,000K | MXN $32,000 | MXN $265,000 | MXN $233,000 ↓ Refund | Export Saldo + IMMEX |
| 5 | Laura Vázquez Ríos (Freelancer) | Playa del Carmen, QR | MXN $290K | MXN $36,800 | MXN $14,000 | MXN $22,800 ↑ Pay | 3 Revenue Streams |
Open the calculator and replicate your own numbers. All 5 tabs are free, no sign-up required.
Since Mexico’s IVA is cash-basis (LIVA Art. 1-B), you do not owe IVA until payment is received. If you are near month-end and a large client can defer payment a few days to the next month, your IVA liability legally shifts to the following filing period — giving you an extra 30+ days of working capital.
Input IVA (acreditable) is only recoverable in the month you actually pay the supplier invoice. If you have outstanding supplier bills due in early next month, paying them by the last day of this month moves that input IVA credit one full month earlier — reducing your current liability immediately.
If your business regularly generates a saldo a favor (e.g., you export heavily), you don’t always have to request a refund. You can carry it forward indefinitely as a credit against future IVA liabilities — effectively using it as a zero-cost revolving credit line against SAT. Only request a refund when you need the liquidity.
The recargo (interest) and multa (fine) system penalizes both late filing AND late payment — but they compound separately. Filing on time while paying late costs far less than filing late. Late filing triggers a 20% surcharge on unpaid tax; late payment only adds monthly recargo at ~1.47%/month.
SAT’s CFDI cross-verification system automatically rejects input IVA claims backed by invalid, cancelled, or duplicate CFDIs. A supplier whose RFC is in “suspensión de actividades” status will have their CFDIs flagged — and you will lose that input IVA credit even though you paid them.
If your business has BOTH taxable (16%/0%) and exempt sales, LIVA’s prorrata rule (Art. 5-C) forces you to recover only a proportion of input IVA — not the full amount. You can legally avoid prorrata by structuring separate legal entities (moral persons) for taxable and exempt activities, allowing each entity to recover 100% of its input IVA.
When a supplier offers a lower price “sin factura” (without invoice), you lose the input IVA credit, the ISR deduction, AND expose yourself to audit risk. The combined tax benefit of a proper CFDI usually outweighs the “no-invoice discount” by 2–3×.
Under LIVA Art. 5 (Option B), when you acquire fixed assets (machinery, equipment, real estate) for taxable activities, you can elect to recover the full IVA upfront in the acquisition month — rather than recovering it proportionally over the asset’s useful life. This can generate a large saldo a favor in the acquisition month.
The single biggest cash flow destroyer for exporters and zero-rated businesses in Mexico is not the IVA they pay out — it’s the weeks of working capital tied up waiting for SAT to return their saldo a favor. The tips below can cut your refund wait from 40 days to under 20 — or eliminate the wait entirely through strategic offsets.
SAT’s Devolución Automática program (RMF Rule 2.3.4) processes IVA refunds in 20 business days — half the standard 40-day timeline — for balances up to MXN $1 million. You must file through the SAT portal with a “devolución automática” election and have all your CFDIs in the SAT’s pre-filled dataset (Declaración Prellenada).
Under CFF Art. 23 (Compensación Universal), you can offset an IVA saldo a favor against ISR liability owed in the same month — clearing both balances simultaneously with zero wait time. This is the fastest possible recovery and has no 20-40 day delay.
SAT audits 100% of IVA refund requests. If any CFDI in your refund claim has errors — wrong RFC, cancelled folio, or duplicate — SAT issues a “requerimiento” (information request) that stops the clock and restarts the 40-day timer. One bad CFDI can cost you 3+ months of delay.
Exporters with 0% output IVA consistently generate saldo a favor because they pay input IVA on all supplies but charge 0% to clients. The key is timing: invoice exports in the same month you pay domestic suppliers — maximizing the gap between input IVA paid and output IVA collected (MXN $0).
Under the 2026 B2B reform, both personas físicas and morales face 50% IVA withholding. However, the ISR withholding rate is 2.5% of gross for morales vs. up to 5% for físicas selling digital services. If you are operating a business, register your RFC as a persona moral on all platform accounts to minimize ISR withholding.
When a platform withholds IVA from you, they must issue a CFDI de Retenciones. This document is your legal proof that the IVA was already remitted to SAT — and is what you enter in Tab 1’s “IVA Withheld by Platform” field to avoid paying it again. Missing this document means double-paying IVA.
Many new sellers price based on cost + desired profit, forgetting that platform IVA and ISR withholding reduce net cash received significantly. Under the 2026 reform, a Persona Moral selling physical goods on Amazon MX receives only ~89.5% of the sale price (after 8% IVA withheld + 2.5% ISR withheld).
When a platform withholds 50% of IVA (e.g., MXN $8,000 on a MXN $100K sale), the remaining 50% (MXN $8,000) is still YOUR liability to SAT — even though you never collected it in cash. You must pay this from your own funds. Recover it by ensuring your input IVA credits are high enough to offset this liability in Tab 1.
When you sell to a buyer with no RFC provided, the platform withholds 100% of IVA AND 20% ISR from you — leaving you with only 64% of your list price in cash. For high-volume sellers, this makes “no-RFC” orders deeply unprofitable. Consider setting minimum order values or account requirements that push buyers to provide their RFC.
A border-zone business charging 8% instead of 16% can offer its B2B clients prices that are 6.9% lower while maintaining identical net margins. For price-sensitive B2B buyers, this is a powerful competitive differentiator that interior-Mexico competitors simply cannot match.
If your business operates from both a border-zone location and an interior-Mexico location, you can maintain separate RFC branch registrations (establecimientos) for each. Border transactions use the border RFC at 8%; interior transactions use the interior RFC at 16%. This is fully legal and commonly used by multi-location retailers.
SAT auditors specifically look for border-zone 8% claims where delivery location is unclear or outside the zone. Your CFDI must include delivery address and your contracts/delivery notes must confirm the goods changed hands inside the border zone.
A single sale in the border zone may include items at different rates: 8% general goods + 0% medicines + 16% processed food. Building a multi-rate CFDI manually is error-prone. Tab 4’s Invoice Builder handles all line items simultaneously — generating correct IVA per line, subtotals, and grand total.
SAT can audit any return up to 5 years after filing. The PDF compliance reports generated by Tabs 1 and 5 of this calculator show your exact calculation methodology with RFC, reporting month, and all input/output values — providing a clear audit trail if SAT questions your numbers years later.
The Opinión de Cumplimiento (compliance opinion) from SAT is a free, instant check showing whether your RFC is in good standing — no outstanding debts, no pending returns, no sanctions. Many large corporates require this from suppliers before signing contracts. It’s also a prerequisite for automatic IVA refunds.
SAT’s audit algorithm cross-references your declared input IVA against: (1) the CFDI XML on record, (2) your bank transfers to that supplier, and (3) the supplier’s own SAT return. A discrepancy between your bank transfer amount and the CFDI amount — even one peso — triggers a mismatch flag.
The DIOT CSV export from Tab 5 does more than prepare your SAT filing — it’s a comprehensive monthly supplier audit. Review it before filing to identify: missing CFDIs, global vendor overuse (SAT limits), suppliers with inactive RFCs, and IVA amounts that don’t reconcile with your bank records.
| # | Tip Title | Category | Level | Calculator Tab | Est. Benefit |
|---|---|---|---|---|---|
| 1 | Delay Cash Collection to Delay IVA — Legally | Cash Flow | Expert | Tab 1 | High |
| 2 | Accelerate Supplier Payments Before Month-End | Cash Flow | Essential | Tab 1 | High |
| 3 | Use Saldo a Favor as Zero-Interest Float | Cash Flow | Expert | Tab 5 | Medium |
| 4 | File on Time Even If You Can’t Pay | Cash Flow | Essential | All Tabs | Critical |
| 5 | Verify Every Supplier CFDI Before Filing | Input IVA | Expert | Tab 1 & 5 | Critical |
| 6 | Avoid Prorrata via Separate Entity Structure | Input IVA | Advanced | Tab 1 | Very High |
| 7 | Always Get a CFDI — Never Accept Sin Factura | Input IVA | Essential | Tab 1 | High |
| 8 | Use Option B for Fixed-Asset IVA Recovery | Input IVA | Advanced | Tab 1 | Very High |
| 9 | Use Devolución Automática for <MXN $1M Refunds | Saldo | Expert | Tab 5 | High |
| 10 | Offset IVA Saldo Against ISR Liability Instantly | Saldo | Expert | Tab 5 | High |
| 11 | Fix All CFDI Errors Before Requesting Refund | Saldo | Advanced | Tab 5 | Critical |
| 12 | Align Export Invoicing to Maximize Monthly Saldo | Saldo | Essential | Tab 1 & 5 | High |
| 13 | Register as Persona Moral on All Platforms | Platform | New 2026 | Tab 3 | High |
| 14 | Download CFDI de Retenciones Every Month | Platform | New 2026 | Tab 3 | Critical |
| 15 | Build Platform Withholding Into Pricing | Platform | Essential | Tab 3 | High |
| 16 | Recover “Stranded” 8% IVA Through Input Credits | Platform | Advanced | Tab 3 & 1 | Medium |
| 17 | Stop Selling to No-RFC Buyers or Raise Minimums | Platform | New 2026 | Tab 3 | Very High |
| 18 | Use 8% as a Competitive Price Reduction | Border | Essential | Tab 4 | High |
| 19 | Maintain Dual RFC Registrations for Multi-Location | Border | Advanced | Tab 4 | Very High |
| 20 | Document Delivery Location in Every 8% Invoice | Border | Expert | Tab 4 | Critical |
| 21 | Use Tab 4 for Multi-Rate Invoices in Border Zone | Border | Essential | Tab 4 | Medium |
| 22 | Save PDF Reports as Monthly Workpapers | Audit | Expert | Tab 1 & 5 | Critical |
| 23 | Request SAT Opinión de Cumplimiento Monthly | Audit | Advanced | All Tabs | Medium |
| 24 | Match Bank Transfers to CFDI Amounts Exactly | Audit | Essential | Tab 1 & 5 | Critical |
| 25 | Use DIOT CSV as Monthly Supplier Compliance Audit | Audit | Expert | Tab 5 | High |
Run the Mexico IVA Calculator to compute your exact net IVA payable, platform withholding, saldo a favor, and DIOT summary — then export your compliance PDF.
IVA (Impuesto al Valor Agregado) is Mexico’s federal Value Added Tax, governed by the Ley del IVA (LIVA). It applies to the sale of goods, rendering of services, use or temporary enjoyment of goods, and importation of goods or services into Mexico. Any individual or company that habitually performs these activities in Mexican territory must register, collect, and remit IVA to SAT each month.
Mexico has four IVA treatment levels: 16% standard (most goods and services), 8% reduced rate for qualifying northern and southern border-zone transactions, 0% for zero-rated activities like exports, medicines, unprocessed food, and certain other categories, and Exempt for activities such as residential rent, financial services, and salaries where IVA is neither charged nor recoverable.
Mexico’s IVA operates on a cash-basis principle for most businesses. Output IVA on sales generally becomes payable in the month the payment is actually received, not when the invoice was issued. Similarly, input IVA on purchases is generally recoverable in the month the supplier is actually paid. This means timing of cash flows directly controls your monthly IVA liability.
Start with total output IVA on all sales collections at each applicable rate. Subtract all input IVA you actually paid to suppliers (backed by valid CFDIs). Then subtract any IVA withheld by platforms or clients and any prior saldo a favor carried forward. If the result is positive, you pay that amount to SAT by the 17th. If it is negative, you have a saldo a favor.
Both 0% and Exempt mean you do not charge IVA to the client, but they have different consequences for input IVA recovery. A business making 0% sales (such as exports or medicines) can generally recover all the input IVA it paid to its suppliers. A business making exempt sales generally cannot recover the input IVA attributable to those exempt activities — it becomes a permanent cost.
The 8% stimulus generally requires the seller to be RFC-registered in an eligible border municipality, the transaction to take place in the border zone, and the goods or services to be physically delivered or rendered inside the zone. Qualifying northern municipalities include Tijuana, Mexicali, Nogales, Ciudad Juárez, Nuevo Laredo, Matamoros, and others. Qualifying southern municipalities include Chetumal, Tapachula, and others.
Yes. A single CFDI can and often does contain line items at different IVA treatments: for example, 8% for physical goods delivered in the border zone, 0% for medicines in the same shipment, and 16% for a consulting service rendered remotely. Each line must show its own IVA calculation. Tab 4 was specifically built to handle this multi-rate scenario without manual arithmetic errors.
A saldo a favor arises when your recoverable input IVA exceeds your output IVA in a given month. You have three main options: carry it forward to offset future months’ IVA liabilities (zero cost, no paperwork), request a cash refund from SAT (requires documentation, takes time), or in qualifying cases offset it against other federal tax obligations. Exporters and zero-rated businesses commonly generate a saldo a favor every single month.
The speed depends heavily on the refund route you choose and your compliance standing. Automatic refund programs can be significantly faster than standard refund processes for smaller balances, but any CFDI mismatch, missing bank transfer record, or RFC issue can trigger a SAT information request (requerimiento) that resets the entire timeline.
Yes. Under the 2026 B2B platform reform, qualifying digital intermediary platforms must withhold a portion of both IVA and ISR from seller proceeds before depositing net amounts. The withholding rates and bases vary by seller type — whether you are a Persona Moral with RFC, Persona Física with RFC providing digital services, or a seller without a valid RFC on file. Platform withholding does not eliminate your monthly IVA filing obligation entirely.
When a platform cannot match you to a valid RFC, the applicable withholding rules generally become significantly more aggressive — meaning more of your gross sale proceeds are withheld for both IVA and ISR. This can dramatically reduce your net cash received per sale and make certain product margins unprofitable.
Some exported services can qualify for 0% IVA when the specific conditions for export treatment under LIVA are met. However, not every service delivered remotely to a foreign client automatically qualifies — the type of service, where it is consumed, and whether it meets the legal export definition all matter. Misclassifying an interior-Mexico service at 0% is a high-audit-risk error.
Generally no. Mexican IVA law and SAT’s CFDI-cross-match system require a valid, verified CFDI to support every input IVA credit claim. Without a CFDI from the supplier, the input IVA recovery is unsupported and at risk of rejection during any SAT review or audit. A supplier’s offer to reduce the price in exchange for no invoice almost always destroys more combined tax value than it saves.
A CFDI de Retenciones is the electronic withholding certificate issued by a platform or client when they withhold IVA or ISR from your income. It is your legal proof that those taxes were already remitted to SAT on your behalf. Without it, you cannot safely enter the withheld amounts as credits in your monthly IVA return — meaning you could end up paying the same IVA twice.
DIOT (Declaración Informativa de Operaciones con Terceros) is a monthly informational return where you report details of your suppliers and the IVA amounts involved in each relationship. Most businesses registered for IVA — including Personas Morales and active Personas Físicas — are required to file DIOT alongside their monthly IVA return. SAT uses DIOT data to cross-match your IVA claims against your suppliers’ own returns.
Filing late and paying late trigger separate penalty calculations. Late filing can add a percentage surcharge on the unpaid tax as a fine. Late payment adds monthly recargo (interest) on the unpaid balance from the due date. The most important rule is: file on time even if you cannot pay in full, because late-filing fines are usually far larger than late-payment interest on the same amount.
Yes. Carrying forward a saldo a favor is one of the most straightforward IVA planning tools available. Simply enter it as “Prior Month Saldo a Favor” in Tab 1 for the following month. There is no time limit on carrying it forward as long as it is properly declared each month. This zero-cost approach is often preferable to the paperwork of a formal refund request for smaller amounts.
Most users start with Tab 1 for monthly reconciliation and will find it handles 80% of common IVA scenarios. Tab 2 helps when you are unsure of the correct rate for a specific product or service. Tab 3 is essential for anyone selling on a digital platform in 2026. Tab 4 is for multi-line invoices with mixed rates. Tab 5 covers saldo a favor recovery decisions and DIOT preparation.
Use the free 5-tab calculator above — no login required, results in seconds.
- Every IVA-registered business also files monthly ISR provisional payments
- Platform sellers face both IVA withholding and ISR withholding simultaneously
- Importers using IMMEX need the import duties calculator for landed cost models
- Employers filing DIOT also need IMSS contributions to calculate true labor cost
- Exporters with saldo a favor can often offset against ISR — requires both tools
- Annual declaration consolidates 12 months of IVA and ISR into one final result
Open AFORE Calculator →
Open ISR Calculator →
| You Are | Also Use |
|---|---|
| Platform seller | Digital Platform Withholding Calculator |
| Employer | IMSS + Payroll Calculator |
| Exporter / Importer | Import Duties & IMMEX Calculator |
| Freelancer / Consultant | ISR Provisional Payments |
| Landlord | Rental Income IVA + ISR Calculator |
SAT RMF 2026 Data Sources & Legal Compliance Disclaimer
This section explains the legal basis of this calculator, its limitations, and links directly to the official SAT, DOF, and government sources that govern Mexican IVA. Reading this section helps you understand when to rely on the calculator and when to consult a professional.
For Educational and Estimation Purposes Only. USFinanceCalculators.com and this Mexico IVA VAT Calculator are provided strictly for educational, informational, and estimation purposes. The outputs generated by this tool — including IVA payable amounts, saldo a favor balances, platform withholding figures, border zone eligibility assessments, and DIOT summaries — are mathematical calculations based on the values you enter and the published rules described in the calculator. They are not legal advice, tax advice, accounting advice, or a formal tax return.
No Guarantee of Accuracy or Completeness. While this calculator is designed to reflect LIVA (Ley del Impuesto al Valor Agregado), the SAT Resolución Miscelánea Fiscal (RMF) 2026, and applicable DOF reform provisions as of April 2026, tax laws change frequently — sometimes with retroactive application or mid-year transitional rules. USFinanceCalculators.com makes no representation or warranty, express or implied, that the results are accurate, complete, current, or applicable to your specific situation.
Always Consult a Qualified Professional. Before filing any Mexican tax return, making any IVA payment to SAT, requesting a saldo a favor refund, applying for IMMEX certification, or relying on border zone IVA rates, you must consult a licensed contador público certificado (CPC) registered with IMCP, or a qualified Mexican tax attorney. Every business situation involves facts, structures, and nuances that a calculator cannot fully assess.
No Affiliation with SAT or the Mexican Government. USFinanceCalculators.com is an independent private educational website. It is not affiliated with, endorsed by, or connected to SAT (Servicio de Administración Tributaria), the Secretaría de Hacienda y Crédito Público (SHCP), the Diario Oficial de la Federación (DOF), IMCP, or any other Mexican government authority. The Mexican government seal, SAT logo, or DOF name are not used or implied to suggest official endorsement.
No Data Storage. This calculator processes all inputs locally in your browser. No personal data, RFC numbers, financial figures, or business information entered into this tool are transmitted to, collected by, or stored on USFinanceCalculators.com servers. All calculations occur client-side only.
- Calculates monthly net IVA payable using cash-basis rules (LIVA Art. 1-B)
- Applies all four IVA treatments: 16%, 8%, 0%, and Exempt correctly
- Models 2026 B2B platform withholding for 4 seller types across major platforms
- Verifies 8% border-zone eligibility across 5 criteria with Tab 2
- Builds multi-rate invoices in Tab 4 with line-item accuracy
- Plans saldo a favor carry-forward, refund, and offset routes in Tab 5
- Generates DIOT-ready CSV for SAT upload
- Exports compliance PDF workpaper with RFC, period, and calculation detail
- Formal tax return preparation or submission via SAT’s DECLARASAT system
- Legal analysis of whether a specific transaction is taxable or exempt
- CFDI 4.0 XML generation or electronic signature (e.firma) application
- ISR calculation, annual declaration, or IMSS/INFONAVIT obligations
- IMMEX certification application or Annex 30 compliance assessment
- Transfer pricing, restructuring, or multi-entity IVA consolidation analysis
- Advice on responding to SAT audits, requerimientos, or compulsas
- State-level taxes (IEPS, ISAN) or municipal levies beyond federal IVA
| Law / Instrument | Key Provision | 2026 Application | DOF Reference |
|---|---|---|---|
| LIVA Art. 1 | IVA obligation — who must pay, 16% standard rate | All taxable transactions in Mexico | Last amended DOF 23-Apr-2021 |
| LIVA Art. 1-B | Cash-basis IVA — IVA is caused when payment is received | Controls Tab 1 monthly calculation timing | DOF 30-Dec-2002 |
| LIVA Art. 5 | Input IVA (acreditable) — conditions for recovery | Supplier payment, CFDI, activity-link requirements | Last amended DOF 23-Apr-2021 |
| LIVA Art. 5-C | Prorrata — partial input IVA recovery for mixed activities | Applies to businesses with exempt + taxable sales | DOF 01-Jan-2010 |
| LIVA Art. 6 | Saldo a favor — options: carry forward, refund, offset | Tab 5 recovery planning logic | DOF 29-Dec-1978 as amended |
| LIVA Arts. 9, 15 | Exempt activities — residential rent, financial services, education | Exempt classification in Tab 2 | Various amendments through 2021 |
| LIVA Art. 18-B to 18-J | Digital services — foreign and domestic platform IVA obligations | Platform withholding rules in Tab 3 | Added DOF 09-Dec-2019 |
| LIVA Arts. 28, 29, 29-A | Exports — zero-rated conditions for goods and services | 0% export rate logic in Tab 2 | Last amended DOF 23-Apr-2021 |
| Decreto Zona Fronteriza Norte | 8% IVA stimulus — northern border municipalities | 8% rate eligibility criteria in Tab 2 & Tab 4 | DOF 31-Dec-2018; extended 2023, 2025 |
| Decreto Zona Fronteriza Sur | 8% IVA stimulus — southern border municipalities | Chetumal, Tapachula and other qualifying zones | DOF 31-Dec-2018; extended 2023, 2025 |
| CFF Art. 23 | Compensación (offset) — apply saldo a favor vs. other taxes | Offset analysis in Tab 5 Saldo Planner | Restricted DOF 09-Dec-2019 |
| CFF Art. 67 | Statute of limitations — SAT audit window | 5-year workpaper retention rule | DOF as amended |
| SAT RMF 2026 | Resolución Miscelánea Fiscal — annual administrative rules | Devolución automática, CFDI 4.0, DIOT rules | DOF 28-Dec-2025 (effective Jan 2026) |
