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Is my tax correct for the 2026/27 tax year?

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GlobalPublished 6 October 2026 · Written by BuyMeWhiskey Editorial Team · How we check facts

For 2026/27, check the income and allowances HMRC holds, then compare your tax code with your payslip. The standard Personal Allowance is £12,570, but multiple incomes, benefits and your UK tax jurisdiction can change the result.

Next question: What tax date applies to fund distributions? →

Check your Income Tax on GOV.UK

Run your own numbers: UK take-home pay calculator 2026/27.

Start by checking the tax code and the income HMRC has on record

"Is my tax correct?" is really two questions: did HMRC calculate the tax from the right information, and did the employer or pension provider apply the resulting code correctly? For PAYE, the fastest first check is HMRC’s current-year Income Tax service, which was updated for the tax year running from 6 April 2026 to 5 April 2027.

The standard Personal Allowance for 2026/27 is £12,570. For England, Wales and Northern Ireland, the basic rate is 20% on taxable income up to £37,700 after allowances, followed by higher and additional rates. Scotland has different income-tax bands, so a Scottish taxpayer should use the Scottish rates shown by HMRC rather than importing the rest-of-UK bands.

Read the code before trying to reverse-engineer the payslip

A normal code such as 1257L broadly represents the £12,570 Personal Allowance when the allowance is available in full. Letters can indicate circumstances that alter the calculation. HMRC’s tax-code checker lets you see what the numbers and letters mean and what information is being used.

The code can be wrong because HMRC has an outdated job, pension, benefit or company-benefit figure, or because circumstances changed after the last update. A code can also be unusual without being an error, so the question is whether it fits your actual income and allowances.

Useful 2026/27 figures

Item	2026/27 figure
Personal Allowance	£12,570
Basic-rate band after allowances outside Scotland	£37,700
Higher-rate threshold outside Scotland	£50,270 total income with full Personal Allowance
Additional-rate threshold	£125,140 taxable-income boundary

The £50,270 figure is often described as the point where the 40% band starts for someone with the full £12,570 allowance; the HMRC table expresses bands as income after allowances. Above £100,000 adjusted net income, the Personal Allowance tapers away by £1 for every £2 of income above that level, reaching zero at £125,140.

Compare the HMRC record with the actual year

salary or pension expected for the current tax year
second jobs or pensions that may have separate PAYE codes
benefits in kind supplied by an employer
State Pension amount if you receive it
tax already deducted year to date
Gift Aid or pension contributions that affect adjusted net income where relevant

If the estimated annual income in your HMRC account is wrong, update the record rather than waiting for the year-end calculation. HMRC’s current-year service is designed to show estimated income, tax and changes to the code in one place.

Signs you may be overpaying or underpaying

A sudden tax-code change after starting a second job is worth checking, as is a code that assumes an expensive company benefit you no longer receive. Conversely, a very generous allowance can create an underpayment if HMRC does not yet know about a taxable benefit or a second source of income.

Do not judge correctness from one payslip in isolation when income varies. PAYE is cumulative for many tax codes, and the correct amount can change as later pay replaces earlier estimates.

When to contact HMRC

Use the online service first when it covers your circumstances. If Self Assessment is your only route for Income Tax, the current-year PAYE checker does not replace the tax return. For a disputed prior-year bill, use the relevant HMRC process for that year rather than trying to fix an old liability by changing today’s tax code.

The 2026/27 baseline gives you a quick sense check

For most taxpayers outside Scotland, the 2026/27 Personal Allowance is £12,570 and the basic-rate band is £37,700 after allowances. The higher-rate threshold is therefore normally £50,270 where the full Personal Allowance is available. Scotland has its own income-tax bands, so a Scottish taxpayer should use the Scottish calculation rather than applying the England, Wales and Northern Ireland bands.

A payslip can still look strange even when the tax rate itself is correct. Bonuses, benefits in kind, workplace pensions, a second job, a new employer, taxable state benefits or an updated HMRC estimate can change the code. Compare the year-to-date taxable pay and tax with HMRC’s record, then check whether the code on the latest payslip matches the code HMRC has issued. A corrected code can change a later payment without meaning an earlier payslip was manually “fixed” by the employer.

A practical 2026/27 PAYE check

Record the employer, annual salary, taxable benefits, pension contributions, tax already paid and the current tax code. Then use HMRC’s current-year service to see whether the employment and income details are up to date. If the code is wrong, correct the underlying HMRC record first; asking payroll to ignore the code usually does not solve the problem because PAYE is driven by the notice received by the employer.

Worked example

Worked example: Priya is taxed in England and has £45,000 of salary for 2026/27 with a full £12,570 Personal Allowance. Her taxable income is £45,000 − £12,570 = £32,430, which is within the 20% basic-rate band.

Taxable income: £45,000 − £12,570 = £32,430.
Income Tax before other adjustments: £32,430 × 20% = £6,486.

This is a simplified income-tax illustration and does not include National Insurance, pension salary sacrifice, benefits, student loans, Marriage Allowance or other adjustments.

For a taxpayer with a full £12,570 Personal Allowance, £37,700 of taxable income above the allowance falls inside the 20% basic-rate band, giving a simple £7,540 calculation: £37,700 × 20% = £7,540. This is a tax-band illustration, not a full annual tax calculation for every income source.

How do I know if my PAYE tax is correct?#

Compare HMRC’s current-year income estimate and tax code with your employer or pension provider’s payslip information. If the HMRC estimate is wrong, correct the underlying record instead of trying to estimate the tax from one payslip alone.

What is the tax-free allowance in 2026/27?#

The standard Personal Allowance is £12,570 for 2026/27. It normally reduces by £1 for every £2 of adjusted net income above £100,000, reaching zero when income reaches £125,140. For most taxpayers outside Scotland, the 2026/27 Personal Allowance is £12,570 and the basic-rate band is £37,700 after allowances.

What does tax code 1257L mean in 2026/27?#

For a taxpayer with the standard full Personal Allowance, 1257L broadly represents £12,570 of tax-free allowance. The exact PAYE result still depends on the other income, deductions and adjustments reflected in HMRC’s record.

Why has my tax code changed?#

HMRC can alter a code when it receives new information about salary, pension, benefits, another job or an estimated underpayment. Open the tax-code explanation in your HMRC account to see what figures are being used before assuming the new code is an error.

Does Scotland use the same tax bands?#

No. Scottish Income Tax bands and rates differ from those in England, Wales and Northern Ireland. If you are a Scottish taxpayer, use HMRC’s Scottish table for 2026/27 rather than applying the rest-of-UK 20%, 40% and 45% structure.

Why is my PAYE different from a simple 20% calculation?#

Only the taxable income inside the relevant band is taxed at that band’s rate, and payslips can also contain National Insurance and other deductions. Personal Allowance, pension arrangements and benefits can change the result further.

Can I fix a wrong tax code myself?#

You can update relevant income and circumstances through HMRC’s current-year service when it applies to you. If your only Income Tax route is Self Assessment, the online PAYE service is not a substitute for the tax return process.

Keep reading

Next question →What tax date applies to fund distributions?

Sources

Figures were checked against these sources before publication. If a rule changes, we update the page and show the new date.

General information, not personal financial advice. Rules depend on your circumstances; check the official source or speak to a regulated adviser before acting.