Do I need to tell HMRC I'm back in UK?

Yes. Notify HMRC via Personal Tax Account (gov.uk/personal-tax-account) or by phone (0300 200 3300). If you submitted P85 when leaving, HMRC has flagged you as non-resident. Confirm UK address + employment status. Within 1-2 pay periods your tax code will revert from non-resident to standard UK PAYE.

What is "temporary non-residence" anti-avoidance?

Sch 45 FA 2013 rules. If you were UK resident for 4+ of the 7 years before departure, then return within 5 complete years, gains realised during absence become taxable in year of return. Also applies to certain pension lump sums + dividends. Plan disposals carefully if planning UK return within 5 years.

When does split year treatment apply on return?

Yes - Cases 4-8 of split year treatment cover return scenarios. Case 4: starting full-time UK work. Case 5: ceasing full-time work abroad. Case 6: accompanying spouse to UK. Case 7: home gone abroad becomes UK home. Case 8: starting to have UK home. Apply via Self Assessment in year of return.

Can I open ISAs again when I return?

Yes - existing ISAs remained open during your absence (you couldn't contribute). On return + UK residence resumption, your £20,000 annual ISA allowance reactivates. LISA requires you to have been UK resident at point of contribution. Existing LISA balance untouched during absence.

Do I have NI gaps from my time abroad?

Almost certainly. Each year abroad without UK employment + without voluntary Class 3 = a gap in your NI record. State Pension requires 35 qualifying years for full new State Pension - gaps reduce your eventual payment. Check at gov.uk/check-national-insurance-record. Class 3 voluntary top-up (~£18.20/week 2026/27) fills gaps. See our Class 3 NI guide .

What about overseas pensions accumulated while abroad?

Treatment depends on country + DTT. Foreign pensions paid to UK resident: generally taxable in UK at marginal rate (with DTT relief preventing double-tax). Some special schemes (US 401k, German Riester, etc.) get specific UK treatment. Transferring to UK SIPP via QROPS reverse-transfer rare + complex. Get specialist advice for substantial overseas pensions.

Do I face CGT on assets I bring back to UK?

No - CGT is triggered on disposal, not movement. Bringing investment portfolio to UK custody is not a disposal. However: future disposals subject to UK CGT. Cost basis = original acquisition cost (not market value at arrival). Currency: any gains/losses in foreign currency form part of CGT computation.

How does Marriage Allowance work after return?

Reapply at gov.uk/marriage-allowance once both spouses UK tax resident + meeting eligibility (lower earner under PA, higher earner basic-rate). Can backdate up to 4 tax years if both eligible during those years (including years partially abroad if UK-resident for relevant tax year). £252/year tax saving.

Will my UK State Pension reflect time abroad?

Only years with UK NI contributions or voluntary Class 3 top-ups count. State Pension forecast at gov.uk/check-state-pension shows projected pension based on current record + future expected contributions. If significant gaps from time abroad, voluntary contributions for last 6 years possible (per general rule) to maximize entitlement.

Practical guide

UK Returning to UK Tax 2026/27

Complete UK tax reset guide for return after living abroad - residency restoration, anti-avoidance rules, ISA reinstatement, NI gap fill via Class 3.

Return checklist

Notify HMRC via Personal Tax Account
Apply for split year treatment via Self Assessment if returning mid-year
Reset UK PAYE tax code via new employer
Check NI record + fill gaps via Class 3 voluntary
Reactivate ISA contribution (£20k annual allowance)
Re-register UK bank accounts
Update GP + NHS
Register for Self Assessment if continuing foreign income
Review overseas pensions + UK tax treatment
Re-apply Marriage Allowance if eligible

The temporary non-residence trap

If you were UK resident for 4+ of the 7 years before departure and return within 5 complete years, anti-avoidance rules apply:

Gains realised during absence become taxable on year of return
Pension lump sums taken abroad may be retrospectively taxed
Certain dividends caught

Implication: if you sold UK property in year 2 of 5-year absence, gain becomes taxable on return in year 4. Plan disposals carefully or extend stay abroad past 5-year mark.

NI gap fill on return

Years abroad without UK employment + without voluntary Class 3 = NI record gaps. Each gap reduces eventual State Pension by 1/35 of full amount.

Class 3 voluntary 2026/27: ~£18.20/week = ~£946/year per missing year. Each year buys ~£362/year of indexed State Pension - 3-year payback.

Frequently asked questions

Do I need to tell HMRC I'm back in UK?
Yes. Notify HMRC via Personal Tax Account (gov.uk/personal-tax-account) or by phone (0300 200 3300). If you submitted P85 when leaving, HMRC has flagged you as non-resident. Confirm UK address + employment status. Within 1-2 pay periods your tax code will revert from non-resident to standard UK PAYE.
What is "temporary non-residence" anti-avoidance?
Sch 45 FA 2013 rules. If you were UK resident for 4+ of the 7 years before departure, then return within 5 complete years, gains realised during absence become taxable in year of return. Also applies to certain pension lump sums + dividends. Plan disposals carefully if planning UK return within 5 years.
When does split year treatment apply on return?
Yes - Cases 4-8 of split year treatment cover return scenarios. Case 4: starting full-time UK work. Case 5: ceasing full-time work abroad. Case 6: accompanying spouse to UK. Case 7: home gone abroad becomes UK home. Case 8: starting to have UK home. Apply via Self Assessment in year of return.
Can I open ISAs again when I return?
Yes - existing ISAs remained open during your absence (you couldn't contribute). On return + UK residence resumption, your £20,000 annual ISA allowance reactivates. LISA requires you to have been UK resident at point of contribution. Existing LISA balance untouched during absence.
Do I have NI gaps from my time abroad?
Almost certainly. Each year abroad without UK employment + without voluntary Class 3 = a gap in your NI record. State Pension requires 35 qualifying years for full new State Pension - gaps reduce your eventual payment. Check at gov.uk/check-national-insurance-record. Class 3 voluntary top-up (~£18.20/week 2026/27) fills gaps. See our <a href="/class-3-voluntary-ni-contributions-complete-2026-27-guide" class="underline">Class 3 NI guide</a>.
What about overseas pensions accumulated while abroad?
Treatment depends on country + DTT. Foreign pensions paid to UK resident: generally taxable in UK at marginal rate (with DTT relief preventing double-tax). Some special schemes (US 401k, German Riester, etc.) get specific UK treatment. Transferring to UK SIPP via QROPS reverse-transfer rare + complex. Get specialist advice for substantial overseas pensions.
Do I face CGT on assets I bring back to UK?
No - CGT is triggered on disposal, not movement. Bringing investment portfolio to UK custody is not a disposal. However: future disposals subject to UK CGT. Cost basis = original acquisition cost (not market value at arrival). Currency: any gains/losses in foreign currency form part of CGT computation.
How does Marriage Allowance work after return?
Reapply at gov.uk/marriage-allowance once both spouses UK tax resident + meeting eligibility (lower earner under PA, higher earner basic-rate). Can backdate up to 4 tax years if both eligible during those years (including years partially abroad if UK-resident for relevant tax year). £252/year tax saving.
Will my UK State Pension reflect time abroad?
Only years with UK NI contributions or voluntary Class 3 top-ups count. State Pension forecast at gov.uk/check-state-pension shows projected pension based on current record + future expected contributions. If significant gaps from time abroad, voluntary contributions for last 6 years possible (per general rule) to maximize entitlement.