Tax Back Leaving UK Permanently Calculator

By /

Calculate Your UK Tax Refund

Your Estimated Tax Refund

Estimated Refund Amount
£0.00
Gross Income for Tax Year
£0.00
Personal Allowance Applied
£12,570
Taxable Income
£0.00
Correct Tax Due
£0.00
Tax Already Paid
£0.00

Tax Calculation Breakdown

Tax Band Income Range Rate Tax Amount

Next Steps

To claim your refund, you’ll need to complete the P85 form and submit it to HMRC along with your P45 from your employer. Processing typically takes 6-12 weeks for online submissions.

How to Claim Your Tax Back

When you’re leaving the UK permanently, you may be entitled to reclaim overpaid income tax. This happens because the UK tax system assumes you’ll work for the entire tax year, but you’re actually leaving partway through. Here’s exactly what you need to know.

Who Can Claim?

You’re eligible if you’ve worked in the UK, paid income tax through PAYE, and are now leaving to live abroad permanently or for at least one complete tax year. Most people in this situation have overpaid tax and don’t realise it.

  1. Get Your P45: When you finish your last UK job, your employer must give you a P45. This document shows your total earnings and tax paid for the year. Keep it safe as you’ll need to attach it to your P85 claim.
  2. Complete Form P85: This is the official HMRC form for claiming tax back when leaving the UK. You can fill it online through your Government Gateway account or download and post it. Include all your employment details and your new overseas address.
  3. Submit Your Documents: Attach your original P45 to the P85 form. If you’ve had multiple jobs in the tax year, include all P45s. HMRC won’t accept photocopies of the P45.
  4. Wait for Processing: Online claims typically take 6-8 weeks to process. Postal applications can take 10-12 weeks. HMRC will write to you about your refund amount and when to expect payment.
  5. Receive Your Refund: If you still have a UK bank account, the money will be transferred directly. Otherwise, you can nominate someone in the UK to receive a cheque on your behalf.

How the Refund Works

The UK tax system operates on a cumulative basis throughout the year. Your employer deducts tax assuming you’ll earn that income all year long. When you leave early, you’ve often paid too much.

Personal Allowance

Everyone gets a personal allowance of £12,570 per year tax-free. If you only worked part of the year, you might not have used your full allowance, meaning you paid tax on income that should have been tax-free.

Split Year Treatment

If you’re leaving to work full-time abroad, you may qualify for split year treatment. This divides your tax year into a UK-resident part and a non-resident part. Only your income during the UK-resident period gets taxed here, often resulting in a bigger refund.

To qualify, you must work abroad full-time for at least a year and have been UK resident in at least one of the previous three years. You can visit the UK for up to 90 days during the non-resident period.

Emergency Tax Codes

Many temporary workers get put on emergency tax codes, which deduct more tax than necessary. Seasonal workers and those on short-term contracts are particularly affected. If this happened to you, your refund could be substantial.

Scenarios & Examples

Seasonal Worker

Scenario: Worked May-August, earned £8,000, paid £800 tax.

Refund: Full £800 because earnings were below the personal allowance.

Why: Emergency tax code meant tax was deducted when none should have been paid.

Professional Moving Abroad

Scenario: Earned £60,000, left in October, paid £12,000 tax.

Refund: Approximately £4,500 with split year treatment.

Why: Only income during UK residency is taxable, reducing overall liability.

Graduate Returning Home

Scenario: Worked full year, earned £25,000, moving home permanently.

Refund: Around £500-800 depending on exact circumstances.

Why: Overpaid due to incorrect tax code adjustments during the year.

Contract Worker

Scenario: Self-employed for 6 months, earned £18,000, paid £2,000 tax.

Refund: Approximately £900 after allowances applied.

Why: PAYE system over-collected based on full-year projection.

Common Mistakes to Avoid

Waiting Too Long to Claim
You can claim back overpaid tax for up to four previous tax years, but don’t leave it too long. The sooner you claim, the sooner you’ll receive your money. Some people forget entirely and lose out on refunds they’re owed.
Not Attaching the P45
HMRC requires your original P45 document. Photocopies won’t be accepted. If you’ve lost your P45, contact your former employer immediately to request a replacement or obtain detailed payslip records as an alternative.
Incorrect Departure Date
The exact date you left the UK matters enormously for split year treatment calculations. Use the actual date you departed, not when you finished work. This can make a difference of hundreds or thousands of pounds to your refund.
Forgetting Multiple Employments
If you had more than one job during the tax year, you need to include all P45s and declare all income. Missing one out will delay your claim and could result in an incorrect calculation.
Not Claiming Split Year Treatment
Many people don’t realise they qualify for split year treatment when moving abroad for work. This can significantly increase your refund, so always indicate on the P85 if you’re working full-time overseas.

Frequently Asked Questions

Can I claim back National Insurance contributions?
No, National Insurance contributions cannot be refunded, even when leaving the UK permanently. You can only reclaim overpaid income tax through the P85 process.
What if I return to the UK within five years?
Returning within five years may affect your tax status for the year you left, particularly regarding Capital Gains Tax on certain assets. However, your income tax refund won’t normally be affected if you genuinely left and met the criteria at the time.
How long does HMRC take to process P85 claims?
Online submissions typically take 6-8 weeks to process, whilst postal applications can take 10-12 weeks. During busy periods, particularly after the end of the tax year in April, processing may take longer.
Do I need a UK bank account to receive the refund?
A UK bank account makes things simpler, but isn’t essential. If you’ve closed your UK account, you can nominate someone in the UK to receive a cheque on your behalf. Include their details on the P85 form.
What if I haven’t left yet but am planning to?
You can submit a P85 form up to 10 days before you leave the UK. This allows HMRC to process your claim more quickly. However, if submitting early, you must use the postal version rather than the online form.
Will claiming a refund affect my Self Assessment obligations?
If you’re required to complete a Self Assessment tax return for the year you’re leaving, you should claim your refund through that return rather than using form P85. The two processes are separate and you shouldn’t use both.
What happens if I earned over £100,000?
If your income exceeded £100,000, your personal allowance reduces by £1 for every £2 over this threshold. It disappears completely at £125,140. This affects your refund calculation, and you’ll likely need to complete a Self Assessment return rather than just a P85.
Can I claim for previous years?
Yes, you can claim back overpaid tax for up to four previous tax years. You’ll need your P60 or P45 for each year you’re claiming for. Each year requires separate documentation and calculations.

Tax Bands Explained

The UK uses a progressive tax system where you pay different rates on different portions of your income. For the 2025/26 tax year, the bands are:

Band Name Income Range Tax Rate
Personal Allowance £0 – £12,570 0%
Basic Rate £12,571 – £50,270 20%
Higher Rate £50,271 – £125,140 40%
Additional Rate Over £125,140 45%

When you leave the UK partway through the year, these bands still apply, but only to your actual UK earnings. If split year treatment applies, only income earned whilst UK-resident counts towards these thresholds.

What Happens After You Claim

HMRC Review Process

Once HMRC receives your P85 and supporting documents, they’ll review your tax position for the year. They’ll check your employment records, tax codes used, and whether you qualify for split year treatment. If anything’s unclear, they’ll write to you asking for more details.

Refund Payment

If you’re due a refund, HMRC will send you a letter confirming the amount and when you’ll receive it. Payments are usually made within two weeks of the decision. If you owe additional tax instead, they’ll explain how to pay and give you time to settle the amount.

Future Tax Obligations

After leaving the UK, you generally won’t owe UK tax on foreign employment income. However, you must still report any UK-source income like rental properties, UK pensions, or UK investment income. Different rules apply depending on whether you have a double taxation agreement between the UK and your new country.

References

  1. HM Revenue & Customs. Income Tax rates and Personal Allowances. GOV.UK. Available at: https://www.gov.uk/income-tax-rates
  2. HM Revenue & Customs. Get your Income Tax right if you’re leaving the UK (P85). GOV.UK. Available at: https://www.gov.uk/guidance/get-your-income-tax-right-if-youre-leaving-the-uk-p85
  3. HM Revenue & Customs. Tax if you leave the UK to live abroad. GOV.UK. Available at: https://www.gov.uk/tax-right-retire-abroad-return-to-uk
  4. HM Revenue & Customs. Rates and allowances: Income Tax. GOV.UK. Available at: https://www.gov.uk/government/publications/rates-and-allowances-income-tax
  5. Low Incomes Tax Reform Group. UK tax refunds for people leaving the UK or living overseas. LITRG.org.uk. Available at: https://www.litrg.org.uk/international/leaving-uk/uk-tax-refunds-people-leaving-uk-or-living-overseas

相关文章

Scroll to Top