The ILR 180-day rule

The 180-day ILR rule is not a calendar-year allowance and it is not a general “spouse visa rule”. Where Appendix Continuous Residence applies, the question is whether you have been outside the UK for more than 180 days in any 12-month period during the qualifying residence. A period can run from, for example, 15 April one year to 14 April the next. If any relevant rolling window totals 181 or more counted days, continuous residence may be broken unless a rule-based exception or transitional provision applies.

For the usual calculation, count only whole days outside the UK. The date of departure and date of return are not themselves counted as full absence days. That does not mean travel dates are irrelevant: they define the interval and must be evidenced accurately.

Appendix Continuous Residence lists the routes to which it applies. It includes, among others, Skilled Worker, Representative of an Overseas Business, Global Talent, Innovator Founder, T2 Minister of Religion, International Sportsperson, UK Ancestry, BN(O), Long Residence and Settlement Family Life. The relevant route Appendix still matters: it sets the qualifying period, categories of permission that can count, and any additional requirements.

Make a travel schedule first. For every trip, record departure date, return date, countries visited and the number of whole days abroad. Then test a series of 12-month windows through the qualifying period. The highest total matters, not the total for a tax year, visa year or January-to-December year.

A careful approach is to begin a window on the first date of each absence and add the whole-day absences falling within the following 12 months. Also test around later departures where a cluster of trips may overlap a different window. A calculator can flag risk, but it cannot determine whether a particular absence is disregarded under the Rules.

In this example, a person may look safe when adding trips by calendar year, yet fail the later moving window. Equally, a total of exactly 180 counted days is not “more than 180”; an extra whole day makes the difference.

Dates are crucial. For absences during permission granted under Immigration Rules in place before 11 January 2018, CR 3.2 uses a different historic consecutive-12-month approach ending on the application date. Do not apply that historic rule to later permission merely because the qualifying period began years ago.

Long Residence has separate transition provisions. For an absence that started before 11 April 2024, the historic tests include no single absence of more than 184 days and no more than 548 days in total where that total was reached before that date. Absences starting on or after 11 April 2024 are assessed under the rolling 180-day approach. A trip that crosses the change date needs particular care; do not collapse the old and new tests into one number.

Keep passport pages, e-tickets, boarding passes, booking confirmations and, where appropriate, employer records or school records. Electronic border records may help, but the applicant remains responsible for providing a coherent history. Reconcile a passport stamp that appears inconsistent with a booking rather than silently choosing the convenient date.

Short trips, same-day travel and overnight flights are common edge cases. Under the whole-day approach, a same-day trip produces no full day abroad. A journey that begins late one day and returns early the next may also have no full day abroad. By contrast, an overnight flight can include a full day outside the UK depending on the actual dates. Time zones and midnight crossings are reasons to preserve itinerary evidence, not reasons to estimate.

• Checking only calendar years or only the final 12 months.
• Counting the departure and return dates as full days.
• Assuming business travel is automatically ignored or that an employer letter creates discretion.
• Using a citizenship absence allowance for ILR.
• Applying a spouse/family-route assumption to a work route, or vice versa.
• Ignoring historic leave and Long Residence transition dates.

Is 180 days allowed? On a route using this test, the rule is normally “more than 180” days. Exactly 180 counted whole days is within that numerical limit, subject to all other requirements.

Does a holiday or work trip count? Usually yes: the reason for travel does not by itself remove it from the count. The Rules contain defined exceptions and special provisions; read the exact route rule.

Can I submit if the calculator shows 181? First audit the dates, route and historic rules. If the result remains over the applicable limit, obtain regulated immigration advice before applying. Do not assume discretion will be exercised.

Prepare a dated travel table, run the rolling-window calculation, then compare each absence against the current Immigration Rules: Appendix Continuous Residence and the Home Office continuous residence guidance. Long Residence applicants should also read the official eligibility page. Last reviewed: 17 August 2026. General information, not legal advice.