Pounds & Dollars

Did 4 years in the UK? You're exactly 6 years away from a UK State Pension

By Pete, Pom in Sydney · Last updated

Four years in London. Two flatshares, one Oyster card, roughly 900 umbrellas, and a tax deduction on every payslip labelled “NI” that you never thought about again. Here's the twist: those four years are worth about £3,585 a year for life. But only if you buy 6 more, and one of them disappears on 5 April 2027.

a few months until 5 April 2027.

After that, under the standard rules, 4 UK years can no longer reach 10.

General information about the UK rules, not financial advice. Whether paying voluntary National Insurance is right for you depends on your own circumstances. I'm not a licensed financial adviser.

Not your personal pension

This is the UK State Pension, paid by the UK government. It comes from the National Insurance on your UK pay, not from a pension pot. Any workplace or personal pension you left in the UK is separate.

The 10-year rule, or: why 9 is the loneliest number

To get any UK State Pension at all you need 10 qualifying years of National Insurance. Not 10 for a full one. Ten for anything. Nine years doesn't get you nine-tenths of something. It gets you £0, a polite letter, and a strong urge to say “computer says no” in a Little Britain voice.

Your 4 years in the UK count. Your years back in Australia don't (the UK and Australia ended their pension agreement in 2001). So on your own, you're 6 short of the line.

Your record today: 4 down, 6 to go
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  4. 4
  5. 5
  6. 6
  7. 7
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  9. 9
  10. 10

The good news: you're allowed to buy exactly 6

HMRC lets you pay voluntary National Insurance for gaps in the last 6 tax years, even from Australia, as long as you have at least 3 years of UK contributions (tick) or lived there 3 years in a row. Right now, those 6 years are 2020/21 to 2025/26.

6 + 4 = 10. It's almost as if someone designed it. (They didn't. It's a coincidence, and it's about to stop being one.)

4 + all 6 = 10: back of the net
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  4. 4
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  9. 9
  10. 10

= about £3,585 a year, from State Pension age, for life.

And you can't make up the numbers with future years instead. Since 6 April 2026, paying for future years abroad needs 10 years of UK residence or contributions. With 4, these 6 past years are the only way to reach 10.

Why 5 April 2027 matters: the window moves, and 2020/21 falls off the end

Today (until 5 April 2027)

  1. 2019/20
  2. 2020/21
  3. 2021/22
  4. 2022/23
  5. 2023/24
  6. 2024/25
  7. 2025/26
  8. 2026/27

6 years you can buy. 4 + 6 = 10.

From 6 April 2027

  1. 2019/20
  2. 2020/21
  3. 2021/22
  4. 2022/23
  5. 2023/24
  6. 2024/25
  7. 2025/26
  8. 2026/27

Only 5 left. 4 + 5 = 9, and 9 years pays £0.

  • Gap years you can buy
  • Normally gone
  • 2026/27 on: needs 10 UK years, so not for you

Meet Jess (made up, but you know a Jess)

Jess went to London in 2008 on a working holiday, stayed four years, and came home to Brisbane with a British accent that lasted three weeks. She's 44 now. She has 4 qualifying years.

Jess applies now

Buys 2020/21 to 2025/26. Hits 10 years. Gets about £3,585 a year from 68, roughly £71,701 over 20 years.

Jess means to get round to it

It's May 2027. Under the standard rules 2020/21 has gone, so the most she can have is 9 years. Her UK State Pension: £0. HMRC occasionally accepts older years, but “I was busy” isn't something to bank on.

What it costs (spoiler: it pays for itself fast)

Rate6 years costs aboutPaid back in
Class 2£1,140about 4 months of pension
Class 3£5,660about 19 months of pension

Class 2 is the cheap one. You qualify if you worked in the UK right before you left, and you've worked in Australia since. That's most returning working-holiday Aussies. Otherwise it's Class 3, which costs more but still pays for itself in under two years of pension.

At the Class 2 rate, that's about the price of a flat white a day for a year. In return you get a pension for the rest of your life.

Aussie passport only? Doesn't matter

The UK State Pension follows the National Insurance you paid, not your nationality. Working holiday visa, ancestry visa, sponsored work visa: if you paid NI, your years count.

Why you can't leave this until March

The deadline is for paying, not just applying. First you apply to HMRC with form CF83, then HMRC writes back to say which years you can buy, then you pay. When my wife applied by post, HMRC took four to five months to reply. Do the maths: if you post a form in February, you may not hear back until after 2020/21 has gone.

And that's if it goes smoothly. Get the CF83 wrong, or get stuck trying to sign in to HMRC from Australia, and you can burn weeks you don't have. I made most of the mistakes so you don't have to.

The form is the bit with the long wait. Send your CF83 in the next few weeks, not the next few months, and get it right first time: there's no time to stuff around. Applying doesn't commit you to paying anything. It just gets HMRC's answer back before 2020/21 runs out, so you can decide then.

Is this you?

  • You worked in the UK and paid National Insurance for about 4 years (any passport, any visa).
  • You've been back in Australia since before April 2020.
  • You're under UK State Pension age (66 to 68, depending on when you were born).

First, check your National Insurance record (opens in a new tab). Four years living in the UK doesn't always mean 4 qualifying years: a year only counts if you earned enough for all of it, so a short first or last year might not. If your record says 4, this page is about you. If it says 5 or more, even better: you have more room. If it says 3, I'm sorry, 6 more only gets you to 9.

How the process works

  1. Your UK National Insurance number is on old payslips and P60s (or the back of a very old drawer). You'll need it for everything below.
  2. Your NI record (opens in a new tab) shows your qualifying years. Getting into HMRC's website from Australia is its own adventure.
  3. To pay from abroad, you apply with form CF83 (opens in a new tab). HMRC replies with the years you can pay for, and the cost. Getting it right first time matters, because there isn't time for a second go before 5 April 2027.
  4. You can run your own numbers in the free calculator.

Stuck, or just want to ask?

Email me at hello (at) poundsanddollars.com and tell me where you're up to. I'm a Pom in Sydney who's been through this twice (mine and my wife's), not a call centre, so I'll actually reply. I can explain how the rules and the forms work, but I can't tell you whether paying is right for you.

Don't leave your UK State Pension out in the rain

A free 5-step email course for Brits in Australia (and Aussies who worked in the UK). One small step at a time, each under an hour, and nothing costs a cent. Your retired self could be very glad you did this!

Not sure you have exactly 4?

Put your own years into the calculator. It shows whether you can reach 10, what it costs, and how fast it pays back.

Use the free calculator

General information only, not financial advice. Figures use 2026/27 rates before tax and assume your 4 years are under the new State Pension rules; years before 2016 can occasionally work out a little differently, so check your State Pension forecast. HMRC decides which years you can buy, so confirm with them before you pay. The UK State Pension is frozen for people living in Australia (no yearly increases), and as an Australian tax resident you pay Australian tax on it.