What is the 180-Day Absence Rule?
To qualify for ILR most routes require that you do not spend more than 180 days outside the UK in any rolling 12-month period during the qualifying residence. The key difference from a calendar-year test is that the Home Office examines every 12-month window across the qualifying period.
How the rolling test is applied
The Home Office performs a daily check across the qualifying period: for each date they look back 12 months and sum absences. If any of those windows exceed 180 days, continuous residence is broken for most routes.
Worked example (concept)
If your planned application date is 1 October 2025, the caseworker will consider the 12-month window ending 1 Oct 2025, and then the window ending 30 Sep 2025, and so on — effectively checking an overlapping series of 12-month periods. Even if your total over five years looks low, a single rolling window can still exceed 180 days.
Worked scenarios
Scenario A — Frequent short trips
Multiple two-week business trips each year summed to 150 days over five years, but no single rolling 12-month window exceeded 180 days. ✅ Passes the test.
Scenario B — One long absence
One continuous absence of 190 days in 2023 means one 12-month window exceeds 180 days. ❌ Fails the test unless a recognised exemption applies.
Common mistakes applicants make
- Counting absences by calendar year instead of rolling 12-month windows.
- Forgetting that departure and return days are usually counted inclusive.
- Not keeping documentary evidence (passport stamps, tickets, employer letters).
How to check your absences
Use the free ILR absence tool to enter travel dates and automatically check compliance with the rolling test. The tool will merge overlapping trips and flag any 12-month window exceeding 180 days. Access it here: ILR absence checker.
Exemptions and discretion
The Home Office may exercise discretion where absences are for serious or compelling reasons (e.g., serious illness, emergency, or unavoidable work obligations). These are assessed case-by-case and supporting evidence is critical.
Related guides
Official sources
Always check the primary guidance on GOV.UK: