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.

Use a calendar rolling 12-month period, not a fixed block of 365 days. A period from 1 March 2023 to 29 February 2024 is a calendar 12-month period and includes leap day; a period from 1 March 2024 to 28 February 2025 is also a calendar 12-month period. Do not replace this with “the previous 365 days”, particularly where a February absence is close to the limit. The dates on the calendar control the test.

For example, assume there are 120 counted days abroad between 1 March and 31 August 2024 and 61 between 1 January and 28 February 2025. The calendar rolling period 1 March 2024 to 28 February 2025 has 181 counted days. Calling 2024 a leap year does not create an additional permitted absence day. Conversely, an absence on 29 February must be included where it falls inside the relevant calendar period. Preserve the itinerary, then let the date range—not a shortcut in a spreadsheet—determine the window.

When testing a travel history, choose a consistent convention for inclusive dates in the worksheet. One practical method is to identify a window start date and include all whole absence days from that date through the calendar day immediately before the same date in the following year. The important point is that all windows use the same calendar logic. If you are close to 180, verify the output manually against the primary records.

Consider an applicant on a route to which Appendix Continuous Residence applies. They leave the UK on 10 April 2024 and return on 9 June 2024: 11 April to 8 June gives 59 whole days. They leave on 1 October and return on 31 December: 2 October to 30 December gives 90 whole days. They then leave on 20 February 2025 and return on 2 April: 21 February to 1 April gives 40 whole days. The simple total is 189 days, but the relevant legal question is which calendar rolling 12-month period contains which days.

The period 10 April 2024 to 9 April 2025 contains all three trips and therefore has 189 counted days. It is over the usual 180-day limit. A calendar-year table could misleadingly show 149 days in 2024 and 40 in 2025. That does not answer the Rules. A correct record should show each trip, the calculated whole days, the start and end of the risk window, and supporting documents for both travel dates.

Now change the final trip: the applicant returns on 24 March rather than 2 April. The final absence becomes 31 whole days, giving 180 in the 10 April to 9 April calendar period. This illustrates why actual return evidence matters and why a planned ticket cannot safely substitute for proof of travel.

Read the current route Appendix first, then Appendix Continuous Residence. Record the date each permission was granted, not merely its expiry date, because legacy treatment can depend on permission granted under Rules in place before 11 January 2018. For Long Residence, mark every absence that began before 11 April 2024 separately. If an absence began before that change date and ended afterwards, do not make an assumption from a headline summary; check the Rules and guidance for the transition.

Prepare an application bundle that a caseworker can follow: a single travel chronology, copies of relevant passport pages, travel confirmations, and an explanation only where there is a genuine discrepancy. Add a short calculation note identifying each calendar rolling 12-month period that approaches the limit. An explanatory note should be factual: it can point to evidence and rule wording, but should not claim an exception unless you can identify the relevant provision and satisfy its conditions.

You can use the ILR absence calculator to organise the dates, then independently check borderline results. If the calculation remains over the applicable limit, if the qualifying period crosses a rule change, or if there is a permission issue as well as travel, a regulated immigration adviser or solicitor can assess the individual facts. This page cannot predict an outcome.

Are Crown service or humanitarian absences always ignored? No. Appendix Continuous Residence contains specific provisions, and each has conditions. Identify the exact reason, route and evidence rather than applying a broad label.

Does time in the Common Travel Area count as being in the UK? The treatment can be route and rule specific. Record the journey and check the relevant current guidance; do not assume a trip to Ireland is invisible because it may not carry a passport stamp.

Can an absence be split between two windows? A single trip can contribute days to more than one calendar rolling 12-month period. That is normal. Test the windows rather than trying to allocate the trip to one visa year.

Prepare a dated travel table, run the calendar rolling 12-month 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: 18 August 2026. General information, not legal advice.