Applying for citizenship when your spouse is British
Married to a British citizen, you can apply as soon as you hold indefinite leave, once you have lived here 3 years. The fee is £1,709 plus £130 for the ceremony.
Citizenship date for the spouse of a British citizen
Earliest citizenship application
15 September 2028
The 5-year partner route sets no fixed absence limit: you must have lived together in the UK, and long or frequent absences need a good reason. The 180-day figure below is shown as a guide only.
| 5 years completed | 13 October 2027 |
| Apply from (28 days early) | 15 September 2027 |
| Worst 12-month window | 30 days |
| Allowance left today | 180 days |
| Days abroad on the trips listed | 30 days |
| Citizenship, at the earliest | 15 September 2028 |
On that date: 30 days abroad in 5 years (limit 450), 0 in the last 12 months (limit 90); set by 12 months after indefinite leave.
Whole days only: the day you leave and the day you come back are not counted. Citizenship assumes ILR granted on the first application date; enter the real date when you have it.
Calculated in your browser: nothing you type is sent anywhere. Not legal advice; not affiliated with the Home Office.
Published by Radif Partners · How we calculate · Home Office fees of 8 October 2026, rules checked 13 October 2026
Naturalisation for the husbands, wives and civil partners of British citizens is shorter than the standard one in two ways. The residence period is 3 years instead of 5, and you can apply on the day you receive indefinite leave to remain, settled status or indefinite leave to enter, without the 12-month wait that applies to everyone else. You must be 18 or over and still married to, or in a civil partnership with, the British citizen. In the 3 years before the Home Office receives your application you may have spent no more than 270 days outside the UK, and no more than 90 in the last 12 months, and you must have been physically in the UK on the first day of that period. English at B1, the Life in the UK test and good character are required. The cost is £1,709 for the application and £130 for the citizenship ceremony, £1,839 in total, and a decision usually arrives within 6 months.
Three tests on the calendar
The spouse route still counts days, just fewer of them. The calculator above checks three conditions for each possible application date, using whole days away (the day you leave and the day you come back are both treated as days in the UK).
- The 3-year window: no more than 270 days outside the UK in the 3 years before the Home Office receives your application.
- The last 12 months: no more than 90 days away in that year.
- The first day: you must have been physically present in the UK exactly 3 years before the application is received. GOV.UK gives the example of an application received on 20 June 2022 by someone who returned from abroad on 25 June 2019: they had to wait until 24 June 2022.
On top of these, you need indefinite leave (or settled status) on the date you apply. Time spent in the UK as a diplomat, a member of a diplomat's household or visiting armed forces does not count, and the residence should not have been in breach of immigration law; with indefinite leave, the Home Office will not usually look back at breaches before it was granted.
Three couples, three dates
Each example below is a spouse who started living in the UK on 2 November 2026 on a partner visa and was granted indefinite leave on 10 October 2031, computed by the citizenship engine.
| Travel history | Earliest application | Why |
|---|---|---|
| Short holidays only | 10 October 2031 | the day indefinite leave is granted |
| Abroad 1 October 2028 to 15 November 2028 | 14 November 2031 | must be in the UK on the first day of the three years |
| Abroad 1 May 2031 to 15 August 2031 | 17 May 2032 | wait until the last 12 months fall to 90 days |
| Same trip, not married to a British citizen | 10 October 2032 | 12 months after indefinite leave, five-year rules |
The third case is the common trap: a long summer abroad in the year before applying. The 90-day limit is strict on paper, and the extra time only stops counting once the trip slides out of the 12-month window. GOV.UK says special circumstances are considered for the first-day test, such as illness or travel restrictions, but the calculator cannot judge them, so it shows the date on which none is needed. The last line shows what the same person would wait without a British spouse: a full year after settlement.
Applying, and what happens after
Most people apply online, which means the Home Office receives the application on the same day; postal applications are received later, which matters for the first-day test. You then give fingerprints and a photo at a UKVCAS service point, where documents can be uploaded or scanned. You need English at B1 or above in speaking and listening (or a degree taught in English), unless exempt, and a Life in the UK pass. A pass from your settlement application is reused through its reference number, so you do not sit the test again.
The Home Office aims to decide within 6 months and tells you before then if it needs longer. If approved, you are invited to a citizenship ceremony, and your permission to stay must last until it has taken place. If you held a biometric residence permit, it must be returned within five working days of receiving your certificate, cut into four pieces. You then need a British passport (or a certificate of entitlement) to travel back into the UK.
The route closes if your British partner dies before you apply; you would then use the standard naturalisation route. People with pre-settled status who are EU citizens or their family members, or who are exempt because their spouse works abroad for the UK government, have their own arrangements set out on GOV.UK. For a complex history or character concerns, see a solicitor or an adviser registered with the Immigration Advice Authority. The ILR after a spouse visa page covers the step before this one.