To settle permanently, many people held their breath and didn't return home in the last year - many ended up suffering for nothing. The figure of 90 days, , has never been the threshold for permanent residency (ILR), but rather the threshold for naturalisation (naturalisation). Mixing these two matters into one is one of the most common misunderstandings in recent years.
Permanent residency (ILR) is based on 180 days, there is no provision for "90 days in the last 12 months".
Continuous residence for the following pathways: Work Visa, Global Talent, Innovator Founder, BN(O), shall be calculated according to Appendix Continuous Residence: within any 12-month rolling period, the time spent outside of shall not exceed days. Note that it is "rolling," not calendar year - calculate once from today going back 365 days, then again tomorrow going back 365 days again, and each window must meet the requirement individually.
The rules have no sentence that says "the applicant can only leave the country for 90 days in the last year before applying." Therefore, it is unnecessary from the perspective of the rules to completely cancel the plan to return home in the last year just for submitting ILR.
90 days refers to naturalization: the year of the 12 months prior to the application
The naturalization requirements are: within 12 months prior to the day of submitting the naturalization application, the time spent outside the country does not exceed 90 days ; for the 5-year route, a total of 450 days is allowed over 5 years. Exceeding does not mean certain rejection — according to the Home Office guidance, 100 days are usually ignored; 101 to 179 days may be considered on a case-by-case basis only if all other conditions are met and it can be proven that there is a close connection with the UK (family in the UK, fixed residence, main assets in the UK). Do not take "may be considered on a case-by-case basis" as "no problem".
Red Line Comparison Table for Each Path to Permanent Residency Exit (Recommended to take a screenshot)
| Route | Exit Limit | 90-Day Rule |
|---|---|---|
| Skilled Worker Visa | Rolling 12 months ≤180 days | Not applicable |
| Global Talent | Same as above; overseas research endorsed by the endorsing body may be exempt from the excess part | Not applicable |
| BN(O) 5 years | rolling 12 months ≤180 days | not applicable |
| Spouse/Partner (Appendix FM) | No fixed upper limit on the number of days, but it must be proven that the UK is the common permanent residence | Not applicable |
| 10 years Long Residence | Before 2024/4/11: total ≤548 days and single ≤184 days; after that: rolling 12 months ≤180 days | Not applicable |
| Naturalisation | 5-year pathway total ≤450 days | Applicable: ≤90 days in the 12 months prior to application |
Staying abroad for a long time in the year before permanent residency, these three situations will really cause problems
1. Cross-window Overlap. The last 90 days of exit is safe by itself, but if these 90 days follow immediately after the previous year's 100 days, a certain rolling 12-month window may exceed 180 days. It's often not "this year" that causes the problem, but the period bridging two years.
Second, time point misalignment. After obtaining ILR, most people have to wait another 12 months before submitting the naturalization application (except for spouses of British citizens). That is, the period within 90 days actually refers to the 12 months prior to the naturalization submission date , which usually exactly covers the year after obtaining permanent residency. Many people try hard to hold back before obtaining permanent residency, but once they get it, they take a long vacation back home, only to get stuck at the naturalization stage.
3. The "intention" review of the spouse route. Appendix FM does not have a 180-day hard line, but long-term absence from the UK may raise doubts about the authenticity of the marriage relationship and joint permanent residence. There is no specific number of days, which actually makes it more difficult to prove.
One-sentence memory method: Permanent residency number 180, naturalization number 90; 180 is calculated by rolling window day by day, 90 only looks at the previous year before the application.
Two things you can do now
📌 Create a table of all entry and exit stamps on your passport in the format "Departure Date - Entry Date", then roll back month by month for 12 months to see if any window exceeds 180 days. Manual calculation is prone to errors; using 永居计算器APP can accurately calculate down to the day, and also arrange the 90-day window for naturalization.
📌 If you already have a window that is approaching or has exceeded 180 days, don't guess whether it can be disregarded — clearly list the specific dates, and spend £5 on justiscript.com to get a written response from a qualified English lawyer within 24 hours, which is more useful than asking ten people on a forum.
This article is for reference only. For specific issues, please consult a licensed attorney. The rules are subject to the latest announcement of GOV.UK.
[Data Source] Home Office "Continuous Residence" Guide: assets.publishing.service.gov.uk/media/6a26836c56e988a798b38760/Continuous_residence.pdf; GOV.UK Citizenship Application Page: www.gov.uk/apply-citizenship-indefinite-leave-to-remain
My judgment is clear: cancel the plan to return home in the last year for permanent residency, most people would just endure it; the energy that should be saved should be used in the year after obtaining ILR, — that's when the 90-day window will really take effect. Enduring the wrong period is more regrettable than enduring too little.
The above table comparing the red lines of each route is worth keeping. If someone you know is struggling with the question "Can I return to China for three months before obtaining permanent residency?", just forward this table to him and he will immediately understand by looking at it.
Want to hear about your situation: What is the total number of days you have been out of the country in your longest 12-month rolling window? Are you stuck on a visit or a transfer? Please leave a comment, and I will pick out similar cases to handle separately.
Here, we dismantle one permanent residency rule every day - how to count days out of the country, how to prepare the list of documents, how much the fees have been adjusted to, and it is updated continuously.
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