UK Leaving Tax Refund Estimator
Estimate whether you might be due a PAYE income tax refund when leaving the UK before the tax year ends (6 April to 5 April).
How this leaving UK tax refund calculator works
Many people who leave the UK part-way through a tax year end up paying too much income tax through PAYE. That usually happens because payroll systems deduct tax as if you will keep earning at the same pace until 5 April, while in reality your UK earnings stop when you leave.
This calculator compares:
- Tax deducted so far (from your payslip or P45), versus
- Estimated tax due on your total UK income for the year.
If tax deducted is higher than estimated tax due, you may be due a refund. If it is lower, you may still owe tax.
Who commonly gets a refund after leaving the UK?
- Employees who worked only part of the tax year
- People put on an emergency tax code early in employment
- Workers with irregular monthly pay or bonuses
- People with multiple job changes and cumulative PAYE corrections
If you had only one steady job the full year, your refund may be small or zero. But if you leave early, a refund is often possible.
Documents to gather before claiming
To make any refund claim smoother, keep these records ready:
- Final payslip and P45 from your UK employer
- Your National Insurance number
- Passport and departure details
- UK bank details (if receiving refund in UK account)
- Any P60 or statements for earlier jobs in the same tax year
How to claim after leaving
1) If you are not filing Self Assessment
Most employees claim via form P85 (Leaving the UK – getting your tax right). HMRC may issue a repayment once they review your year-to-date figures and expected future UK income.
2) If you normally file Self Assessment
You usually claim through your tax return, including split-year treatment or residency details where relevant.
3) Timing
Refund times vary. Some are processed in weeks; others take longer if HMRC requests additional evidence.
Common mistakes that reduce or delay refunds
- Entering total deductions instead of income tax only (mixing in NI)
- Forgetting other taxable UK income (interest, rental, freelance, etc.)
- Assuming your tax code was correct for the entire year
- Not updating HMRC with a reliable address/contact method after departure
Example (simple)
Suppose you earned £24,000 before leaving, had no other UK income, and £3,600 PAYE tax deducted so far. Your annual tax due on £24,000 may be lower than the tax already withheld. In that case, the difference is your estimated refund.
This is exactly the type of scenario this calculator helps you check quickly.
Important notes
- This estimate focuses on UK income tax bands and personal allowance only.
- It does not calculate National Insurance refunds.
- It is not legal or tax advice; always confirm final numbers with HMRC or a qualified adviser.