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Contents: The rules since 6 April 2026 · Step 1 — the State Pension forecast · Step 2 — the Government Gateway login · Step 3 — the CF83 application · Step 4 — HMRC's reply · Step 5 — paying · Typical cases · The maths · Remember

Before you start — the rules since 6 April 2026

To pay voluntary contributions from abroad you need 10 years in the UK: 10 years in a row of residence, or 10 qualifying years on your record (voluntary contributions paid from abroad do not count).

Class 2 no longer exists for periods abroad; from 2026/27 only Class 3 can be paid (£956.80 a year).

Anyone who applied to HMRC on or before 5 April 2026, for 2024/25 or 2025/26, may move to Class 3 without meeting the 10-year test, provided they apply (and pay those years) on or before 5 April 2027.

The back years still open are 2020/21 to 2025/26, each with its own 5 April deadline (2020/21 by 5 April 2027); years before 2020/21 are closed for good.

A State Pension is only paid with at least 10 qualifying years (UK years, or UK years combined with EU/EEA years); below that the pension is nil, not reduced. The amounts on the site are estimates; only HMRC confirms which years can be paid.

What we cannot tell you: whether someone applying for the first time after 5 April 2026, from abroad, without meeting the 10-year test, can still pay for back years. Sources conflict; only HMRC answers it, on your application. That is why this guide leads to HMRC, not to a conclusion.

Sources: HMRC policy paper, 16 March 2026 · gov.uk — if you live or work abroad.

Step 1 — Check your State Pension forecast

The forecast shows your qualifying years, the gaps, and what you would get. It is free and it is the only reliable source: our calculator only estimates from the years you typed in.

A qualifying year is a tax year (6 April to 5 April) in which you paid, or were credited with, enough National Insurance. The year you left may be incomplete. The forecast counts them for you; we only count what you tell us.

Official link: gov.uk/check-state-pension

You need a Government Gateway login (step 2). If you cannot set one up from abroad, you can also request the forecast by post with form BR19: gov.uk — application for a State Pension forecast (BR19).

Step 2 — Get a Government Gateway login

The login is your online identity with HMRC. You use it for the forecast and for the online application. Have your National Insurance number (NINo), an identity document and usually a phone for the confirmation code to hand.

Official link: gov.uk — HMRC online services: sign in or register

Never give anyone the password. HMRC never asks for it by email or phone.

Step 3 — Apply with CF83 online

CF83 is the application to pay voluntary contributions from abroad. It is completed online, with your work history in the UK and abroad (employers, dates), the date you left and the country you live in.

HMRC decides, year by year, whether you can pay and at which class. Only that reply confirms eligibility; our calculator cannot.

Official link: gov.uk — apply to pay voluntary National Insurance contributions when abroad (CF83)

The conditions in short: the 10-year test (10 years in a row lived in the UK, or 10 qualifying years), or the transitional route for applications made on or before 5 April 2026, with a 5 April 2027 deadline. Details: gov.uk — if you live or work abroad.

If you are not sure you meet the test, call the Future Pension Centre first: +44 191 218 3600 (International Pension Centre: +44 191 218 7777), Mon–Fri, 8am–6pm UK time.

Step 4 — How HMRC replies

You receive a letter (it can take months). It says exactly which years you can pay, at which class, what each year costs and how to pay, with an 18-character payment reference.

Check the years and deadlines in the letter: each tax year has its own deadline, 5 April of the year shown, starting with the oldest (2020/21 → 5 April 2027 … 2025/26 → 5 April 2032); years before 2020/21 are closed.

If the answer is that you cannot pay, that is HMRC's confirmation.

If something does not match your forecast, call the Future Pension Centre from abroad: +44 191 218 3600 (Mon–Fri, 8am–6pm UK time). Link: gov.uk — Future Pension Centre.

Step 5 — Pay HMRC directly

Payment goes to HMRC's official account with the reference from the letter — usually by bank transfer from abroad. Keep the proof. The years appear on your record after some weeks; check the forecast again.

Official link: gov.uk — pay voluntary Class 3 National Insurance. Class 3 costs £956.80 a year for 2026/27 onwards. Class 2 appears only on the transitional route, for back years worked abroad; the payment instructions come in HMRC's letter.

Typical cases (illustrative, not real people)

James, 41, Alicante. 15 years in the UK (2005–2019), moved to Spain in 2020. Over the 10-year test on his own account: the six back years 2020/21–2025/26 may be open at Class 3, and future years may be payable — if HMRC confirms.

Sarah, 38, Lisbon. 12 years as an NHS nurse (2009–2020), now working in Lisbon. Same position: back years may be open at Class 3 (about £957 each), future years may be payable; HMRC confirms.

Mark, 52, Málaga. 11 years in construction (2004–2015). Over the 10-year test; a path to the full pension if HMRC confirms the years.

Margaret, 64, Paphos. 28 years in the UK (1975–2003), retired to Cyprus. Only the back years before her pension starts at 67 could still matter — if HMRC confirms them.

Anyone under 10 years who did not apply by 5 April 2026. The site does not say whether back years can be paid; only HMRC can. Years in the EU, EEA or Switzerland can usually count towards the 10-year minimum.

The maths, in one line

One qualifying year adds about £358.50 a year to the pension, for life (1/35 of the full £12,547.60, 2026/27). A Class 3 year costs £956.80, so a confirmed year pays for itself in under three years of retirement.

Example: 12 years worked in the UK give about £4,302 a year (12 × £358.50). If HMRC confirms 6 back years, 18 years would give about £6,453 a year. Over 20 years of retirement one year returns roughly £7,170, nominal, before uprating. Whether a year can be paid at all is HMRC's decision, not a formula.

Remember

You pay HMRC only, with the reference from their letter. Do not pay anyone else for "processing" or "access". If you are at State Pension age or within 6 months of it, CF83 can no longer be filed: contact the International Pension Centre (+44 191 218 7777).

Guide: how to pay for UK State Pension years, directly with HMRC