Leaving the UK

Do I pay National Insurance if I work abroad?

Answered by Jordan Onraet-Wells, Founder & Chartered Tax Adviser (CTA). Published 17 July 2026. Last reviewed 17 July 2026.

The short answer

It depends on your employer and destination: a UK employer sending you temporarily to a country with no social security agreement must keep deducting Class 1 National Insurance for your first 52 weeks abroad, in the EU and agreement countries you normally pay into one country's system at a time, and if you take a local job or move abroad permanently, compulsory UK National Insurance usually stops. Once it stops, most expats can protect their State Pension with voluntary Class 3 contributions: £18.40 a week (£956.80 a year) for 2026/27.

A UK employer sending you temporarily to a country with no social security agreement must deduct Class 1 NI for your first 52 weeks abroad if it has a place of business in the UK, you are ordinarily resident in the UK and you were living in the UK immediately before starting work abroad.
In the EU, Gibraltar, Iceland, Liechtenstein, Norway, Switzerland and agreement countries you normally pay into one country's system at a time; a certificate from HMRC can keep a posted worker in UK NI.
If you work for a foreign employer or move abroad permanently, compulsory UK National Insurance normally stops and your State Pension record stops building.
From 6 April 2026 voluntary Class 2 is abolished for time abroad: for 2026/27 onwards most expats can only pay Class 3, at £18.40 a week (£956.80 a year).
New overseas applicants must have 10 continuous years of UK residence or 10 years of paid qualifying contributions (credits do not count), and apply on form CF83.

When you still pay UK National Insurance abroad

The 52-week rule catches temporary postings outside the agreement network. Within the EU and agreement countries, coordination rules decide which single system you pay into, and posted workers can apply to HMRC for a certificate keeping them in UK National Insurance. Take a local job overseas, or move permanently, and compulsory UK contributions normally stop.

The trap: your State Pension record stops building

Once compulsory NI ends you stop earning qualifying years towards the UK State Pension, which typically needs 35 qualifying years for the full new rate of £241.30 a week in 2026/27. The cheap fix has closed: from 6 April 2026 voluntary Class 2 is abolished for periods abroad, leaving Class 3 at £956.80 a year as the route for most expats. New overseas applicants also face a tougher test, though transitional rules protect existing Class 2 payers and pre-6 April 2026 applications if they act before the April 2027 deadlines.

What to do before and after you leave

Check your State Pension forecast before paying anything, because extra years add nothing once you are on course for the full amount. If a top-up makes sense, apply on form CF83, which can be completed online: one extra qualifying year typically adds roughly £358 a year to the new State Pension, so even a Class 3 year usually pays for itself within about three years of retirement. Our voluntary NI from abroad guide sets out the decision path, and the working-abroad checklist covers what to agree with your employer.

Go deeper

Sources and further reading

This is general information for the 2026/27 UK tax year, not personal tax advice; speak to a Chartered Tax Adviser about your own position.

Applies to you? Ask us directly

A page can only take you so far. Book a free 30-minute clarity call with Jordan, a Chartered Tax Adviser, and get this answered for your exact situation, on a fixed fee agreed upfront.

All quick answers