2025/26 UK PAYE Calculator: Take-Home Pay, HMRC Tax & NI

PAYE stands for Pay As You Earn. It is the system used by HM Revenue and Customs (HMRC) to collect income tax and National Insurance contributions directly from your wages on every single payday — before the money ever lands in your bank account. Your employer’s payroll software runs the calculation automatically using your personal tax code.

Unlike the United States where you file a big tax return every April to settle what you owe, the UK system is designed so that most employees never have to think about tax at all. Your employer deducts exactly the right amount each month, pays it directly to HMRC on your behalf through a Full Payment Submission (FPS), and you receive the net figure in your account. At the end of the tax year your employer gives you a P60 confirming everything that was paid.

The only UK workers who must file a Self Assessment tax return are the self-employed, those with income over £100,000, landlords with rental income, and people with other complex or untaxed income sources. For everyone else, PAYE handles it in full. Source: GOV.UK PAYE for Employers.

Your tax code tells your employer exactly how much income to let pass through tax-free every pay period. It is set by HMRC and appears on every payslip, your P60, and inside your HMRC Personal Tax Account.

The standard code is 1257L. The number 1257 represents your Personal Allowance divided by 10 — so 1257 × 10 = £12,570 of tax-free income. The letter L means you qualify for the standard Personal Allowance. Here is a quick decoder for the most common codes:

• 1257L — Standard. Tax-free income of £12,570. Correct for most UK employees with one job.
• BR — All income taxed at 20% with zero allowance. Typically issued for a second job or new starters without a P45.
• D0 — All income taxed at 40%. Used when your first job has consumed both the allowance and basic rate band.
• D1 — All income taxed at 45%. Additional rate flat applied.
• K codes (e.g. K497) — A negative allowance. The number is added to your income rather than deducted. Caused by large benefits-in-kind or underpaid tax from previous years.
• S prefix (e.g. S1257L) — Scottish taxpayer. The devolved 6-band Scottish tax system applies to your salary.
• NT — No tax deducted at all. Used only for specific diplomatic or exemption cases.
• M / N suffix — Marriage Allowance received (M) or transferred (N).

The UK tax year runs from 6 April to 5 April the following year — not from January 1 like most countries. The current 2025/26 tax year therefore runs from 6 April 2025 to 5 April 2026. This odd date is a relic of the 1752 calendar reform, when Britain switched from the Julian to the Gregorian calendar. Rather than lose 11 days of tax revenue, the Treasury simply shifted its financial year end forward by those 11 days — from 25 March to 5 April — and the date stuck for over 270 years.

Why it matters for you: income tax thresholds, allowances, pension limits, and ISA limits all reset on 6 April every year. Any unused ISA allowance or pension carry-forward opportunities cannot be rolled over once the year ends. The critical action dates for employees to know each year are:

• 6 April: New tax year begins — check your first payslip for correct new tax code.
• 31 May: Your employer must provide your P60 for the previous year.
• 31 January: Self Assessment filing and payment deadline (if applicable).
• 5 April: Tax year ends — last chance to use ISA allowance, pension limits, and any 4-year refund claims.

When you leave a job, your employer gives you a P45. This document shows your total gross pay, total income tax paid, and total NI paid from 6 April up to your last day of that employment. You must hand Part 2 and Part 3 of this P45 to your new employer when you start — this is the key document that tells your new employer how much of your Personal Allowance and basic rate band you have already used, so they can tax you correctly from day one.

If you do not have a P45 — because it is your first job, you have lost it, or you are starting work after a gap — your new employer will ask you to complete a Starter Checklist (previously called a P46). How you answer the checklist determines your emergency tax code and the likelihood of overpaying tax in the short term.

UK income tax uses a progressive band system. You never pay the higher rate on your entire salary — only on the slice of income that falls within each specific band. Here is the exact process for a standard England/Wales/Northern Ireland taxpayer in 2025/26:

1. Start with your gross salary.
2. Subtract your Personal Allowance (£12,570 for most people) to get your taxable income.
3. Apply 20% to the first £37,700 of taxable income (up to total earnings of £50,270).
4. Apply 40% to the next slice of taxable income (earnings £50,271 – £125,140).
5. Apply 45% to anything above £125,140.

Scotland uses a different 6-band system with rates from 19% (Starter) up to 48% (Top Rate). If you are a Scottish taxpayer, your tax code will have an S prefix (e.g., S1257L) and the devolved Scottish rates apply to your non-savings income.

This is called fiscal drag — and it is one of the most stealthy forms of tax increase in the UK system. The government has frozen all income tax thresholds (including the £12,570 Personal Allowance and the £50,270 higher rate threshold) until at least April 2028. Meanwhile, wages have been rising with inflation. The result: a bigger slice of your salary falls into taxable bands every year without any formal tax hike being announced.

Think of it this way: if you earned £30,000 two years ago and now earn £33,000 after pay rises, your gross income grew by 10%. But because your £12,570 tax-free allowance did not grow at all, your taxable income grew by 17.3% — from £17,430 to £20,430. That extra £3,000 of taxable income was being taxed at 20% and 8% NI all along.

Under the Scotland Act 2016, the Scottish Parliament gained full devolved control over income tax rates and bands for non-savings, non-dividend income earned by Scottish taxpayers. Scotland uses this power to run a 6-band system that raises more revenue from middle and higher earners to fund additional public services — including free prescriptions, free university tuition for Scottish students, and free personal social care — that England charges for.

Scotland’s 6 bands for 2025/26 are: Starter Rate 19% (£12,571–£15,397), Basic Rate 20% (£15,398–£27,491), Intermediate Rate 21% (£27,492–£43,663), Higher Rate 42% (£43,664–£75,000), Advanced Rate 45% (£75,001–£125,140), and Top Rate 48% (over £125,140). Anyone earning above roughly £28,000 in Scotland pays more income tax than an equivalent worker in England — with the gap widening sharply at higher salaries.

Your Personal Allowance of £12,570 can only be applied to one job — almost always your main employment. Every pound you earn from a second job is therefore taxed from the first penny, typically under emergency code BR at 20%, or D0 at 40% if your first job already uses up the entire basic rate band.

Here is a practical example: if your first job pays £40,000, your entire Personal Allowance (£12,570) is used there, and the basic rate band is largely consumed (£40,000 − £12,570 = £27,430 used out of £37,700). A second job paying £15,000 would then be taxed as follows: 20% on the first £10,270 (the remaining basic rate band), then 40% on the remaining £4,730. No free allowance at all.

Use the Multiple Jobs toggle in Tab 1 of this calculator to model your exact combined take-home across both salaries.

National Insurance (NI) is a completely separate levy from income tax that runs on its own thresholds, its own rates, and its own logic. Economically, both are taxes on your earnings — but they serve different purposes and are governed by different rules. Income tax funds general government spending. National Insurance officially funds the state pension, the NHS, and other contributory state benefits. The key practical differences are:

• Different thresholds: Employee NI starts at the same £12,570 Primary Threshold as income tax — but above the £50,270 Upper Earnings Limit, NI drops sharply to just 2% while income tax continues at 40%.
• Different rates for self-employed: Employees pay Class 1 (8%/2%). The self-employed pay Class 4 (6%/2%) and a flat-rate Class 2 (£3.45/week) — lower rates in exchange for limited NHS entitlement.
• Builds pension entitlement: Every year you pay NI (or receive NI credits) counts as a qualifying year toward your State Pension. You need 35 qualifying years for the full New State Pension of £221.20/week (2025/26).
• Stops at State Pension age: Once you reach State Pension age (currently 66), you stop paying employee NI entirely — even if you continue working. Income tax applies for life.

The 2025 Autumn Budget introduced two major changes to National Insurance from 6 April 2025 — both affecting employer NI rather than employee NI. Your personal take-home pay is not directly reduced by these changes. However, most economists agree they have indirect effects on wage growth and hiring decisions.

• Employer NI rate increased: from 13.8% to 15% on employee wages.
• Secondary Threshold dropped: from £9,100/year down to £5,000/year, meaning employers start paying NI on lower-paid workers much earlier.
• Employment Allowance increased: from £5,000 to £10,500, partially offsetting the above for eligible small businesses (those with employer NI bills under £100,000).

To offset the increased cost, many employers have responded by moderating pay rise offers, cutting working hours for lower-paid part-time staff, or increasing automation. While these changes do not appear on your payslip directly, they are one reason why real wage growth in 2025 has been more subdued than expected. Source: GOV.UK 2025/26 Employer Rates.

Student loan repayments in the UK are not collected like a bank loan. They are deducted automatically through PAYE — only on earnings above your specific plan’s threshold. If you earn below the threshold in any given month, you pay nothing for that month. The loan does not accumulate penalty interest for non-payment, and is entirely written off after a set number of years regardless of the remaining balance.

• Plan 1 (pre-Sep 2012 students, England/Wales): 9% on earnings above £24,990/yr. Write-off at 65 or 25 years.
• Plan 2 (Sep 2012 – Jul 2023, England/Wales): 9% above £27,295/yr. Write-off 40 years after repayment starts.
• Plan 4 (Scottish students from 1998+): 9% above £32,745/yr. Highest threshold of all plans.
• Plan 5 (from Aug 2023, England): 9% above £25,000/yr. Write-off 40 years after starting repayment.
• Postgraduate Loan: 6% above £21,000/yr. Deducted separately and simultaneously alongside any undergraduate plan.

The 60% trap is the highest effective marginal income tax rate in the mainstream UK tax system — and it applies to anyone with an Adjusted Net Income between £100,000 and £125,140. Most people in this income range have absolutely no idea it exists until they see an unexpected Self Assessment bill.

Here is how it works: the UK’s £12,570 Personal Allowance (the tax-free amount every worker gets) is withdrawn at a rate of £1 for every £2 of income above £100,000. So earning an extra £2 in that zone costs you £2 × 40% income tax = £0.80 in tax on the extra earnings, plus £1 of lost allowance that becomes newly taxable at 40% = another £0.40. Total tax on that extra £2: £1.20 out of £2.00 = 60%.

The fix: Pension contributions (especially via Salary Sacrifice), Gift Aid donations, and trading losses can all reduce your Adjusted Net Income below £100,000, restoring your full £12,570 allowance. Use the 60% Trap tab in this calculator to find your exact pension sweet spot.

The High Income Child Benefit Charge (HICBC) is a tax charge that claws back Child Benefit from families where either partner’s Adjusted Net Income exceeds £60,000. Child Benefit pays £26.05/week for the first child and £17.25/week for additional children (2025/26) — but those payments are partially or fully cancelled out by the HICBC for higher earners.

The charge runs at 1% of your total annual Child Benefit for every £200 of income above £60,000. Once one partner reaches £80,000, the HICBC equals 100% of the Child Benefit — meaning the family keeps nothing net. The thresholds were reformed in April 2024 (raised from £50,000/£60,000 to the current £60,000/£80,000 levels).

The solution is identical to the 60% trap: reduce your Adjusted Net Income through pension contributions or Gift Aid. Dropping from £72,000 to £60,000 in ANI restores the full £2,212 — a £1,327 annual benefit worth pursuing with just £12,000 of extra pension contributions. Source: GOV.UK HICBC.

These are the two most misunderstood numbers in UK personal tax — and confusing them leads people to make bad financial decisions.

Your marginal tax rate is the tax rate applied to the next pound you earn. If your salary puts you in the higher rate band, your marginal income tax rate is 40%. But you do not pay 40% on your whole salary — only on the portion above £50,270.

Your effective tax rate is the total tax you pay as a percentage of your gross salary. For a £65,000 earner paying £13,432 in income tax and £4,586 in NI, the effective total rate is (£13,432 + £4,586) ÷ £65,000 = 27.7% — not 40%.

Why does this matter? Marginal rate tells you how much you save for every £1 you put into a pension — so it drives tax planning decisions. Effective rate tells you how much of your total salary you actually keep — useful for comparing your overall tax burden across different incomes or countries.

Both documents come from your employer and both summarise your pay and tax — but they serve completely different purposes and are issued at different times. Confusing them when starting a new job is the most common cause of emergency tax codes and short-term over-taxation.

A wrong tax code is far more common than most people realise. In 2024, UK media reported that British workers had collectively overpaid £5.8 billion to HMRC due to incorrect codes — an average overpayment of £689 per affected worker. HMRC does not always catch these automatically, so you need to check and act yourself.

How do I check if my HMRC tax code is wrong?

• Look at your latest payslip and find the tax code (usually top right or listed near your name).
• If you are a standard employee with one job and no company car or unusual benefits, it should be 1257L for England/Wales or S1257L for Scotland.
• Any code other than the standard demands an explanation — log into your HMRC Personal Tax Account to see why your code was set.

How do I claim a tax refund if I overpaid PAYE?

• Current tax year: Contact HMRC on 0300 200 3300 or update through your Personal Tax Account. They will issue a corrected code to your employer, and future payslips will include a catch-up adjustment for months already on the wrong code.
• Previous tax years: You can claim back overpaid tax for the last four tax years (currently back to 2021/22 — but this window closes on 5 April 2026 permanently). Apply through your HMRC Personal Tax Account or by post using form R40. Refunds typically arrive within five weeks. Claim at: GOV.UK Tax Refund.

The Marriage Allowance lets one partner transfer 10% of their Personal Allowance (£1,260) to their spouse or civil partner — saving the household up to £252 per year in income tax. It sounds small, but HMRC allows backdating up to four tax years, meaning eligible couples who have never claimed could receive a lump-sum refund of over £1,008 in one application, plus the allowance continues automatically going forward.

Eligibility Requirements — All Three Must Be True

• You are married or in a registered civil partnership (cohabiting couples do not qualify).
• The lower-earning partner earns below the Personal Allowance (under £12,570/yr) or has no income at all.
• The higher-earning partner is a basic rate taxpayer (earns between £12,571 and £50,270). If they are a higher rate taxpayer at 40%, they do not qualify.

The lower earner applies at GOV.UK Marriage Allowance. Once approved, the lower earner’s tax code changes to end in N (transferred allowance away) and the higher earner’s code changes to M (received extra allowance). The £252/year saving applies automatically every year after that.

Salary Sacrifice is the most tax-efficient way for a UK employee to save into a pension. Here is the key concept: you formally agree to take a lower gross salary, and your employer pays the difference directly into your pension pot. Because the contribution leaves your paycheck before HMRC ever counts it as your income, it is never subject to income tax or National Insurance.

Compare this to simply earning the salary and then choosing to save it: you would pay income tax and NI on the gross amount first, leaving you with far less to invest. Salary Sacrifice routes the money directly into your pension at full gross value, and you save both taxes simultaneously.

The One Genuine Catch to Know

There are two considerations. First, your contractual gross salary falls — which can affect mortgage applications (some lenders look at your nominal salary rather than total package), maternity/paternity pay (which can be calculated on the lower sacrificed salary), and redundancy pay. Always check with your HR team before maximising salary sacrifice if any of these apply. Second, from April 2029, the Budget confirmed that NI savings on pension salary sacrifice contributions above £2,000/year will be capped — though income tax relief remains fully protected indefinitely. Source: GOV.UK Salary Sacrifice.