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Part-Year Tax Calculator

Estimate take-home pay where income is earned for only part of the tax year.

Inputs

Estimate tax when you work for only part of the tax year.

Starting or leaving work during the tax year

PAYE can temporarily over- or under-deduct tax when employment starts late, ends early or changes during the year. A cumulative tax code can correct some differences through later payslips.

Personal allowance and residence

Working for only part of a year does not always mean the personal allowance is simply divided by months. UK residence, split-year treatment and the type of income received can affect the final position.

Claiming a PAYE refund

If too much tax has been deducted, HMRC may correct it through payroll, after the tax year or following a claim. P45, P60 and payslip records help support the calculation.

Worked examples

Starting a first job in October

Enter income expected over the working months to get a broad part-year estimate. The final PAYE result will depend on the tax code and how payroll applies unused allowance.

How we calculate this

Income is annualised from the months worked.

A simple annual tax estimate is prorated to the working period.

Final PAYE refunds or balances can depend on tax code changes and payroll timing.

Official sources

FAQs

Are these calculations financial advice?

No. These calculators provide estimates based on the figures entered and published UK tax assumptions. They are not personal financial advice.

Which tax year does this use?

The calculator uses 2026/27 UK tax assumptions, including Income Tax and National Insurance thresholds.

Will my payslip or tax return match exactly?

Not always. Tax codes, payroll timing, pension scheme type, benefits, expenses and HMRC records can change the final result.

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