NI Gaps: The April 2025 Deadline Has Passed — What Options Remain for Expats?

Important change from 6 April 2026: The option to pay voluntary Class 2 contributions for periods spent abroad has been abolished for most expats. Going forward, most expats maintaining their record from abroad must pay voluntary Class 3 (around £957 per year for 2026/27). Narrow exceptions remain (broadly, the self-employed covered by an international social security agreement, and volunteer development workers). The Class 2 figures below remain relevant only for filling earlier (pre-2026/27) gap years where Class 2 was the applicable rate.

Between 2023 and 5 April 2025, the UK government offered an extended concession that allowed individuals to fill National Insurance gaps going back to April 2006 — at the advantageous Class 3 rates of 2022/23, regardless of the year being filled. This concession was primarily aimed at people approaching retirement who might otherwise miss the full new state pension by a small number of years. For expats, it represented an extraordinary and time-limited opportunity to fill a decade or more of gaps at historically low cost.

That window is now closed. The question facing many expats in 2026 is: what can still be done?

What the Extended Concession Allowed

Under the normal rules, voluntary Class 3 NI contributions can only be paid for gaps in the six most recent tax years. The 2023–2025 extended concession was a temporary relaxation that allowed gaps from 6 April 2006 onwards to be filled, subject to the individual being eligible to pay voluntary contributions.

The rationale was the transition to the new state pension in 2016. Many people — particularly women, carers, and those who spent periods abroad — found their transitional starting amount was lower than expected because of gaps in the pre-2016 period. The concession gave them the opportunity to remedy that.

For expats who were aware of it and acted, the opportunity was significant. For those who did not, the gaps from the period 2006/07 to approximately 2018/19 are now closed under normal rules (six-year window from 2026 means gaps from 2019/20 and later are still open).

What Gaps Are Still Open in 2026?

As of 2026, the standard rule applies: you can fill voluntary NI gaps for the six most recent tax years. This means gaps from tax years:

• 2020/21
• 2021/22
• 2022/23
• 2023/24
• 2024/25
• 2025/26

Gaps from 2019/20 and earlier are closed under standard rules and cannot be filled through normal voluntary contributions.

The one exception to track is whether any further government concessions are announced. There have been no announcements as of mid-2026 to reopen the extended window or create a new one, but the political pressure on pension adequacy — particularly for those who missed the April 2025 deadline — may prompt future action. It is worth monitoring HMRC announcements if you have significant pre-2019 gaps.

How Many Open Years Could You Have?

An expat who left the UK in, say, 2010 and has not paid voluntary NI contributions since leaving, could have accumulated gaps in their NI record across all intervening years. Of those, only the six years from 2020/21 onwards are now fillable.

In the best case, if you have at least 10 qualifying years already, you can still add up to six more qualifying years by filling the open gaps — bringing you closer to the 35-year threshold for the full new state pension.

If you have 25 qualifying years, for example, filling all six open gaps would take you to 31 — still short of 35, but meaningfully higher. Combined with future contributions (whether through employment, voluntary NI paid annually going forward, or NI credits in the UK if you return), reaching a full pension may still be achievable.

Action Now: Fill the Open Years First

The most important immediate action for any expat with gaps is to address the open years now — before they fall outside the six-year window. 2020/21, currently still open, will fall outside the window on 5 April 2027. 2021/22 will close on 5 April 2028, and so on.

If you wait too long, gaps that are currently fillable become permanently closed. The practical advice is:

1. Check your NI record now — use the HMRC Government Gateway or request a statement by post.
2. Identify which years from 2020/21 onwards are gaps — not all years will be; some may already be qualifying years even if you were abroad (due to credits or prior employment).
3. Confirm which class applies to each year — for pre-2026/27 gap years, if you were employed or self-employed abroad and ordinarily resident in the UK before leaving, Class 2 (approximately £182/year in 2025/26) may have applied, which was substantially cheaper than Class 3. For 2026/27 onwards, voluntary Class 2 for periods abroad has been abolished for most expats, so payments going forward are at the Class 3 rate (approximately £957/year for 2026/27).
4. Pay for open years — contact HMRC, complete form CF83, and arrange payment. Do not delay on this: years are closing annually.

Going Forward: Paying Ongoing Voluntary Contributions

For expats who want to protect their state pension entitlement proactively, the key is to keep voluntary contributions current year by year rather than allowing gaps to accumulate that must then be filled retrospectively.

For periods from 6 April 2026, most expats pay voluntary Class 3:

• The annual cost (circa £957 for 2026/27) is still economically justified if you have fewer than 35 qualifying years
• Pay each tax year before it falls outside the six-year window
• Prioritise years in order — fill the oldest open year first each year
• Ideally set up an annual payment arrangement with HMRC

The narrow Class 2 categories that remain (broadly, the self-employed covered by an international social security agreement, and volunteer development workers) should still pay Class 2 where eligible, as it is cheaper.

What If the Closed Gaps Prevent a Full Pension?

If the closed gaps from pre-2019 mean you cannot reach 35 qualifying years through the open years plus future years alone, you have several strategic options:

1. Accept a Reduced Pension

A pension based on, say, 28 or 30 qualifying years is still valuable. At 30 years, the new state pension would be approximately £206.83/week (2026/27 rates) — a meaningful income for a retired expat. The shortfall from the full £241.30/week is approximately £34.47/week, or around £1,792/year. For many expats, this difference is manageable when combined with private pension, investment, and/or overseas income.

2. If You Plan to Return to the UK

If you plan to return to the UK and work — even part-time — each year of employment in the UK will be a qualifying year (assuming earnings above the lower earnings limit of approximately £6,396/year in 2026/27). Working in the UK for five years after returning, for example, could add five qualifying years to your record.

3. Totalling Agreements with Foreign Social Security

If you have worked in a country with which the UK has a social security totalling agreement, years of contributions to that country's social security system may count towards your UK qualifying years. Countries with totalling agreements include all EEA countries, the USA, Canada, Australia, Japan, South Korea, and a number of others.

Under totalling, foreign years typically only help you reach the minimum 10-year threshold — they do not directly increase your state pension amount. But they can make the difference between receiving any state pension and receiving nothing for those with very limited UK records.

4. Lobby for Future Concessions

While this is not a planning strategy per se, it is worth noting that there is ongoing advocacy from pension groups for another extension of the voluntary contributions window. HMRC has previously extended the deadline twice (from 2023 to 2025). The political dynamics around pension adequacy for women and those who spent periods out of the workforce make a further concession politically feasible, if not certain. Monitor HMRC announcements.

The Cost of Inaction — A Concrete Example

Suppose an expat currently has 25 qualifying years and could have 31 with all six open gaps filled (at a total Class 3 cost of around £5,742 at 2026/27 rates). They expect to receive their state pension for 20 years.

• With 25 years: state pension of approximately 25/35 × £241.30 = £172.36/week = £8,963/year
• With 31 years: state pension of approximately 31/35 × £241.30 = £213.72/week = £11,113/year
• Difference: £2,150/year × 20 years = £43,000 lifetime income for an outlay of £5,742

That is a net gain of approximately £37,300 over 20 years — even before considering triple-lock uprating on the higher base, the return is compelling.

The Cost of Waiting One More Year

2020/21 closes as a fillable year on 5 April 2027. If you wait a year to act and it closes, you lose the chance to fill that year. At 2026/27 Class 3 rates, that is approximately £957 in cost foregone, but also approximately £6.89/week in pension income foregone for your entire retirement. Over 20 years, that is roughly £7,170 of lifetime income lost — a return of around 7:1 — by waiting 12 months.

The message is straightforward: address open gaps immediately, not eventually.

How Global Investments Can Help

The window to address historical NI gaps is narrowing year by year. Global Investments works with expat clients to review their NI record, calculate the return on voluntary contributions, confirm eligibility for Class 2 or Class 3, and integrate state pension planning into a comprehensive retirement income strategy.

Our advisers work with UK expats internationally and with those returning to the UK. If you have NI gaps and have not yet taken action, contact us for an initial review — it is one of the highest-return planning steps available to British expats.

Please note: NI contribution rules and voluntary contribution windows may change. All information reflects HMRC rules as understood in 2026. The April 2025 deadline described in this guide is confirmed closed; verify your specific gap years with HMRC. Seek regulated financial advice.