Tax Issues When Moving to or Leaving the UK

Introduction

Moving to the UK as a foreigner, or leaving the UK to work abroad, triggers complex tax questions.

Your residence status, tax obligations, and planning opportunities depend on specific circumstances. Get it wrong, and you'll face unexpected tax bills.

What is UK Tax Residence?

"Residence" determines which income is taxable in the UK.

Residents are taxed on worldwide income. Non-residents are only taxed on UK-sourced income.

HMRC uses several tests to determine residence:

Test 1: Automatic Resident

• UK 183+ days in a tax year
• OR regularly in UK 91+ days in 4 consecutive years

Test 2: Automatic Non-Resident

• UK 0-90 days, working abroad full-time
• OR no home in UK, 91-180 days

Test 3: Statutory Residence Test (if not automatic)

• Complex factors (family ties, work, accommodation)

Split-year Relief

If leaving the UK permanently, you can claim split-year relief.

This means:

• You're non-resident from the date you leave (not end of tax year)
• You're only taxed on UK income after leaving date

Conditions:

• You work full-time abroad (or retired)
• You don't visit UK significantly after leaving
• Your employment/work is outside the UK

Example: You leave UK on 30 June to work in Dubai.

Without split-year relief:

• Tax year runs 6 April - 5 April next year
• You're resident for first part (until leaving)
• Worldwide income taxed until end of tax year (31 March)

With split-year relief:

• You're resident only until 30 June
• From 1 July, you're non-resident
• Only UK income taxed from 1 July onwards

This can save significant tax if you have foreign employment income post-leaving.

Returning to the UK

When moving to the UK from abroad:

Non-UK resident transitioning to resident:

• From the date you arrive (or 183+ days), you become resident
• Worldwide income is then taxable
• Split-year relief applies on the reverse if leaving the previous country permanently

Remittance Basis (for Non-uk Residents)

If non-resident and have foreign income, you might be able to claim remittance basis.

Remittance basis means:

• UK income is taxable
• Foreign income is only taxable if remitted to UK
• Foreign capital gains are not taxable (if not remitted)

Benefit: If you earn abroad and don't bring the money to the UK, you don't pay UK tax on foreign income/gains.

Downside: You lose some UK tax reliefs (personal allowance, capital gains exemption).

Key Planning Points

Planning 1: Timing of Move Timing your move within the tax year affects your tax liability. Moving early in the year (April) vs. late (March) makes a difference.

Planning 2: Accommodation If you leave but keep a UK home (or stay with friends/family), you might still be resident. Plan accommodation carefully.

Planning 3: Family Ties Where your spouse/children live matters for residence determination. Keep records of your living situation.

Planning 4: Work Documentation If working abroad, keep employment contracts and documentation. HMRC scrutinizes split-year relief claims.

Case Study: Expatriate Tax Planning

Situation: UK resident, employed with £100k salary. Offered job in Singapore, 3-year contract.

Tax position (without planning):

• Continues as UK resident (fails split-year relief, keeps home)
• Worldwide income taxed: UK salary + UK investment income + Singapore salary
• Singapore tax + UK tax = double taxation

Tax position (with planning):

• Sells UK home before leaving (no future UK tax home)
• Accepts job contract (full-time work abroad)
• Claims split-year relief from departure date
• Becomes non-resident from departure
• Singapore salary not taxed in UK
• Only UK income (interest, pensions) taxed at UK rates
• Tax savings: Potentially £20k-£40k over 3-year contract

Key Takeaway

Moving internationally has major tax consequences. Whether you're leaving the UK or arriving, plan your residence status and tax position carefully.

Split-year relief and remittance basis can save substantial tax. Without planning, you'll overpay.