Living in Australia with UK National Insurance gaps: what buying the missing years is worth
Someone in Australia with 20 UK qualifying years and gaps from 2020–21 to 2026–27 can buy 7 years for £6,614.40, adding £2,509.52 a year to their UK State Pension. On a part Age Pension they keep about £1,254.76 of it, paid back in 5.3 years; below the income-test free area they keep all £2,509.52, paid back in 2.6 years. The reason is the Age Pension income test, which counts a UK pension as income. The UK pension is also frozen in Australia.
Three Australian cases, worked out
| Household | Years bought | Cost | UK pension a week | Gain a year | Kept a year | Payback |
|---|---|---|---|---|---|---|
| 20 UK years, gaps 2020–21 to 2026–27, on a part Age Pension (above the free area) | 7 | £6,614.40 | £137.89 to £186.15 | £2,509.52 | £1,254.76 | 5.3 years |
| The same record, income below the free area | 7 | £6,614.40 | £137.89 to £186.15 | £2,509.52 | £2,509.52 | 2.6 years |
| 25 UK years, gaps 2024–25 to 2026–27, part Age Pension | 3 | £2,787.20 | £172.36 to £193.04 | £1,075.36 | £537.68 | 5.2 years |
Worked out by the engine behind our calculator, all at Class 3. Pension = qualifying years ÷ 35 × the full new State Pension of £241.30 a week (2026–27). “Kept” is the gain after the Age Pension income test: half of it above the free area, all of it below. Years before April 2016 can change your starting amount, so check the Future Pension Centre’s forecast.
Work out your own years with the voluntary NI from abroad calculator: choose Australia, say whether you are above the free area, and it shows the cost, the deadline for each year and what you keep.
How the Age Pension income test treats it
Australia counts a UK pension as income for the Age Pension. The free areas are $226 a fortnight for a single person and $396 a fortnight combined for a couple. Up to that point, extra income costs you nothing. Above it, the Age Pension falls by 50c for each $1 for a single person, and 25c each for a couple (50c for the two of you).
- On a part Age Pension you keep about half of each extra pound of UK pension, because the other half comes off the Age Pension. That is why the first household’s payback rises from 2.6 to 5.3 years.
- Below the free area you keep it all, as long as the extra UK pension does not take you over it.
- Tax is separate. Australia taxes it, and lets you deduct 8% of a category A UK State Pension (ATO).
What a frozen pension misses
The UK State Pension is frozen in Australia: you get the rate from when you first claim, with no yearly increases. The one published rise takes the full rate from £241.30 to £250.70 a week in 2027–28, about 3.9%. If rises carried on at that pace, this is the gap after 10 years against someone drawing the same pension where it rises.
| Household | Frozen in Australia | If it rose, after 10 years | Behind a week | Behind a year |
|---|---|---|---|---|
| 20 years plus 7 bought | £186.15 | £272.91 | £86.76 | £4,511.52 |
| 25 years plus 3 bought | £193.04 | £283.01 | £89.97 | £4,678.44 |
This assumes rises continue at the one published rise (2026–27 to 2027–28); later rises are not yet known.
The 5 April 2027 deadline
- 2020–21 closes on 5 April 2027: after that this gap year can never be filled.
- The first household would lose 2020–21 by waiting, and pay £184.60 more for the rest at the 2027–28 rates announced at Budget 2026. The 25-year household has no gap that old, but waiting still costs it £83.20.
Read the 5 April 2027 deadline for the transitional rules.
What people get wrong
- “The Age Pension will take it all back.” No. Above the free area the taper is 50c per $1 for a single person, so about half is kept.
- “It makes no difference to the Age Pension.” It does once your income is above the free area.
- “The UK pension goes up every year.” Not in Australia: it is frozen at your first rate.
- “I can choose Class 2.” Only for years up to 2025–26, and only with UK work right before leaving plus work in Australia. Otherwise it is Class 3 at £18.40 a week.
- “I will pay when HMRC asks.” HMRC does not ask. You must apply, and 2020–21 closes on 5 April 2027.
How to buy the years from Australia
- Check your UK National Insurance record and forecast on GOV.UK; our UK State Pension age and forecast reader explains the figures.
- Run the calculator with your gaps and your Age Pension position.
- Apply with form CF83 online. For 2026–27 onwards you need 10 years in a row living in the UK or 10 years of UK-paid contributions, or the transitional rule.
- Pay only after HMRC’s letter gives the amount and payment reference, oldest year first.
Background on the rules and the countries where the pension rises: UK State Pension from Ireland and abroad.
Frequently asked questions
Does a UK pension reduce the Age Pension?
It can. Australia counts a UK pension as income for the Age Pension income test. Above the free area ($226 a fortnight single, $396 combined for a couple) the Age Pension falls by 50c for each $1 of income, 25c each for a couple. Below the free area nothing is lost.
Is it still worth buying UK years if I live in Australia?
It can be. Our household on a part Age Pension pays £6,614.40 for 7 years and keeps about £1,254.76 a year of the £2,509.52 gain: paid back in 5.3 years. Below the free area it keeps all of it, paid back in 2.6 years.
Is my UK State Pension frozen in Australia?
Yes. You get the rate from when you first claim, with no yearly increases. If UK rises carried on at 3.9% a year, £186.15 a week would be £86.76 a week behind after 10 years.
How is the UK State Pension taxed in Australia?
Australia taxes it, and lets you deduct 8% of a category A UK State Pension (ATO).
How far back can I buy?
2020–21 is the oldest year still open, and its deadline is 5 April 2027. Older gaps can no longer be filled.
Related
- Voluntary NI from abroad calculator: years, class, cost, deadlines and what you keep in Australia.
- UK State Pension from Ireland and abroad · the 5 April 2027 deadline · State Pension age and forecast reader
- The 10-year test: who can still buy Class 3 from abroad from 2026 to 2027, and the old 3-year rule.
- Other countries: UK State Pension in New Zealand · in Canada · in Ireland · in the US
Sources
- GOV.UK: Voluntary National Insurance (rates, the six-year limit, deadlines) and if you live or work abroad (Class 2 ended, the 10-year test)
- Services Australia: income test for Age Pension
- ATO: foreign pensions and annuities (myTax 2026)
- GOV.UK: State Pension if you retire abroad
Read 13 November 2026. General information, not advice; it cannot see your National Insurance record. Only the Future Pension Centre can confirm which years count and what to pay.
Cite or link to this article
DecisionsCalc (2026). UK State Pension in Australia: Age Pension and NI Years. https://decisionscalc.com/articles/uk-state-pension-living-in-australia/
You are welcome to quote our figures with a link. Each figure on the page names its official source and the date we checked it.
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