Leaving the UK: 12-Month Pre-Departure Checklist for Landlords

A landlord moving abroad has roughly four interlocking workstreams running in parallel: residence planning (Statutory Residence Test and split-year), HMRC compliance (NRL1, P85 or SA109, last self-assessment), property infrastructure (letting agent, mortgage lender, insurance, tenant handover), and a sell-or-hold decision on the portfolio itself. Mishandling any one of them costs cash. Mishandling the sequencing costs more, because some of the windows are fixed by statute (the 60-day NRCGT return) and some by counterparty service-level (NRL1 takes around six weeks).

This page sets out the 12-month timeline in the order the work actually has to happen. It is the action-led companion to our descriptive overview at UK property income for expats; that page tells you what the obligations are, this one tells you when to act on each.

How to use this checklist (and when to start)

Start the checklist the moment your departure becomes a real plan, even if that is more than a year out. Two beats determine the earliest viable start date: residence planning and lender consent. The Statutory Residence Test counts UK days across the whole departure tax year, so a mid-year departure is shaped by what you did before you knew you were leaving. Lender consent typically takes four to eight weeks and can in some cases force a refinance, which adds another two to three months.

If departure is less than 90 days away, accept that the checklist will run into your non-resident period. NRL1 will sit pending on arrival in the new country, the agent appointment may happen by video call from abroad, and your last UK self-assessment will be filed remotely. None of that is fatal; it just compresses the timeline.

Throughout this page, three anonymised personas appear:

• Mark and Sarah, three-flat BTL portfolio in Manchester, moving to Spain in April 2027 for a permanent relocation.
• David, a single homeowner letting his former main residence in Bristol, moving to Dubai for a four-year posting.
• The Owen family, a five-property Edinburgh portfolio, returning to Australia after 12 years in the UK; expect to be away for two years and then reassess.

Twelve to nine months out: the strategic decisions

The earliest phase is not about forms. It is about three decisions that shape everything downstream.

1. Pick the departure tax year and target your SRT outcome

Statutory residence in the UK runs from 6 April to 5 April. A January departure makes you UK-resident for the whole tax year unless split-year Case 1 or 3 applies. An April departure can leave a clean break from day one of the new tax year. For a salaried move (David's case, taking up overseas employment), split-year Case 1 typically triggers from the date overseas full-time work starts, provided the conditions in Schedule 45 of Finance Act 2013 are met. For a no-employment move (Mark and Sarah retiring abroad), Case 3 (ceasing to have any UK home) is the usual route, but it requires actually disposing of, or letting out, every UK home; keeping a UK home as a pied-a-terre kills Case 3.

Run the SRT against your projected calendar for both the departure year and the year after. Aim for a known automatic overseas test (under 16 UK days, or full-time overseas work with under 30 UK workdays and under 90 UK days). The sufficient ties test (family, accommodation, work, 90-day, country) is a fallback rather than a plan; it produces uncertainty in years where business or family commitments pull you back.

2. Decide which UK home you are keeping (if any)

A UK home for SRT purposes is a place that meets specific conditions; the rules in RDR3 are tighter than the casual idea of "having a UK address". If you keep a UK property available to you for less than 91 days but treat it as your home for 30+ of those, you can still meet the only-home automatic UK test and remain resident. The neatest outcome is to either let the property to a tenant on an arm's-length tenancy (which removes it from your homes), or sell it. Storing furniture there or "keeping it for when we visit" is the trap pattern.

3. Decide the portfolio strategy: keep, partial-sell, or full sell

Three questions decide this:

1. What is your latent CGT on the portfolio at today's values?
2. Is there any prospect of returning to the UK within five years?
3. Does the new country tax overseas rental income, and at what rate?

The interaction is non-trivial. If the Owens (Edinburgh, five properties, large embedded gains, planning a two-year posting) sell as non-residents, the rebasing to April 2015 market value can dramatically shrink the chargeable gain. But the temporary non-residence rule in section 10A TCGA 1992 will pull those gains into the year of return because their absence will be five years or less. The right answer for them is often to sell at least one property before departure to use 18% basic-rate CGT capacity, then hold the rest.

For Mark and Sarah (permanent move to Spain), the sell-or-hold question is dominated by UK-Spain DTA and Spanish wealth tax considerations rather than s.10A. For David (one property, Dubai, four years out), the question is whether the four-year window crosses the s.10A 5-year threshold; the temporary non-residence rule recaptures the gain in his return year if his absence is five years or less.

Nine to six months out: lender, insurance, and the agent shortlist

4. Lender consent or buy-to-let refinance

Residential mortgages require owner-occupation. Letting without lender consent breaches the mortgage. Two routes:

• Consent-to-let. A letter from your existing lender allowing the property to be let, usually for a fixed period (12 or 24 months is typical). Frequently there is a rate uplift of 0.25% to 1.0%. Decision time: four to eight weeks. Lender list varies; some refuse entirely.
• Remortgage onto a buy-to-let product. Required if your lender refuses consent, if you need a longer let period, or if the property has been let long enough that the lender treats it as a BTL anyway. Decision time: six to twelve weeks. Some BTL lenders prohibit non-resident borrowers, so apply while still UK-resident.

For an existing BTL mortgage, check the borrower-residence covenant. A handful of lenders have a "must be UK-resident" clause; emigration is technically a breach and they can require repayment or a switch onto an expat-buy-to-let product (which carries materially higher rates).

5. Insurance: landlord cover and non-occupier endorsement

Your buildings and contents insurer needs to know two things: the property is no longer owner-occupied, and the policyholder address has changed. Failure to disclose either invalidates claims. Switch to a landlord-specific policy (rent guarantee, malicious damage by tenants, public liability) and add a non-occupier endorsement to any policy covering a void period. For the Owens, with five properties, this is most efficiently done by switching to a portfolio policy with a single specialist broker.

6. Shortlist a letting agent and decide the appointment structure

If you do not already use an agent, now is the time. Three model choices:

• Full management. Agent handles rent collection, tenant queries, repairs up to a pre-agreed cap, deposit registration, and the NRL withholding or gross-payment administration. Typical fee: 10% to 15% of gross rent.
• Rent collection only. Agent collects rent and operates NRL withholding; you handle repairs and tenant relationships. Typical fee: 5% to 8% of gross rent. Practical for landlords with local family who can handle issues.
• Tenant find only. Agent finds the tenant, you collect rent directly. The NRL withholding obligation falls on the tenant once weekly rent exceeds £100; this is form NRL3 territory and is rarely the right structure for a non-resident landlord.

Manchester and Edinburgh markets are well-served by specialist agents who already handle non-resident clients; ask shortlisted firms how many non-resident landlords they currently act for, and how they handle NRL2 quarterly returns and NRL6 annual statements. If they cannot answer either question, drop them from the shortlist.

Six to three months out: HMRC infrastructure

7. Brief your accountant and confirm departure-year filing approach

Whoever prepares your tax return needs to know the departure date, the country you are moving to, and whether you are claiming split-year. They will need the SA109 supplement for the departure year and (if relevant) the foreign supplement (SA106) for any overseas income that arises before departure. A clean handover memo at this point saves time at January filing season.

8. Pre-departure CGT crystallisation (if relevant)

If your strategy includes a pre-departure sale (the Owens' approach above), the disposal must complete before you cease to be UK-resident, otherwise it falls into the non-resident regime and the 60-day NRCGT return mechanics. Standard 18% / 24% residential rates apply (from 30 October 2024) with a £3,000 annual exempt amount per individual. Spouse transfers under section 58 TCGA 1992 happen at base cost, so a no-gain-no-loss transfer to a lower-rate spouse before sale is a legitimate planning step where the spouse has unused basic-rate band.

9. Update your will

The residence-based IHT regime that started on 6 April 2025 made domicile largely irrelevant. From that date, a "long-term resident" (10 of the previous 20 tax years UK-resident) is within UK IHT on worldwide assets. Leaving the UK does not immediately remove you; a "formerly long-term resident" tail of up to 10 years keeps your worldwide assets in the IHT net after departure. UK situs property stays in UK IHT regardless. The will should reflect both the new home country's succession rules and the UK IHT position; do not assume a UK-only will still works.

10. Notify HMRC of pension and ISA position

You can keep an existing UK ISA, but you cannot add to it from the tax year after the one in which you become non-resident. UK pension contributions get more complex; tax relief on personal contributions ends once you are non-UK-resident, with a £3,600 gross relief tail-allowance for a transitional period. Get advice on whether to maintain UK pension wrappers or freeze contributions.

Three to one month out: tenants, agents, NRL1

11. Sign the letting agent management agreement

If a property is becoming a rental for the first time (David's case), the agent's onboarding includes EPC check, gas safety certificate, electrical installation condition report (EICR), Right-to-Rent check on tenants, and deposit-scheme registration. Allow four to six weeks for first letting after onboarding.

12. Tenant notification and section 48 service address

Existing tenants need your overseas address in writing under section 48 of the Landlord and Tenant Act 1987. Section 48 lets you serve notice as a landlord; if the section 48 address is not in England or Wales, you must give a service address in England or Wales (the agent's address satisfies this). For Scottish properties, the equivalent service rules apply under the Tenancy Deposit Schemes (Scotland) Regulations 2011 and Private Housing (Tenancies) (Scotland) Act 2016.

13. Prepare the NRL1 application

The NRL1 application is made by you, the non-resident landlord, after you have left the UK. You can fill in the form before departure and post it on the day of arrival, or download it once you are abroad. The form requires:

• Your overseas address from the date of departure.
• Details of each UK rental property (address, expected annual rent, agent or tenant remitting rent).
• Confirmation that your UK tax affairs are up to date.
• Your National Insurance number and Unique Taxpayer Reference (UTR).

Companies and trusts file NRL2 or NRL5 instead. A separate NRL1 is needed per individual landlord; a married couple owning jointly needs two NRL1s.

14. Banking arrangements

Keep a UK bank account if you can. Closing it tends to be a one-way decision that is hard to reverse from abroad and complicates rent receipts, refunds from HMRC, and standing orders for insurance or service charges. Update the address on the account to your overseas address or to a UK forwarding address; many UK banks accept a UK trusted-contact address even when the customer lives abroad. Alert the bank to your move; otherwise foreign-IP logins can trigger fraud blocks.

The final fortnight: documents, packing, and the leaving-day record

15. Pack the document pack

Three folders that should travel with you:

• Property folder. Tenancy agreements, agent contracts, mortgage statements, EPC and safety certificates, leasehold documents, latest service-charge statements, insurance schedules.
• Tax folder. Last three UK self-assessment returns, last three SA302 tax calculations, UTR and NI numbers, accountant contact details.
• Personal folder. Birth certificates, marriage certificate, passports, qualification certificates. Required when opening a bank account, registering for residency, or enrolling in healthcare in most destination countries.

16. Final UK address and forwarding mail

Set up Royal Mail Redirection for at least six months past departure; tax letters from HMRC, council tax final statements, and pension provider correspondence will continue arriving. Update the registered address on Companies House for any UK companies you hold (including BTL SPVs); director-residency disclosure under the Economic Crime and Corporate Transparency Act 2023 also needs updating.

17. Record your leaving-day position

Take dated photographs of any property you are letting (especially if it was previously your residence) for CGT base-cost evidence and for the tenant-handover inventory. Note odometer-readings or business mileage if you operate a sole-trader property business with travel claims. Save bank balances and investment valuations on the departure date; many overseas tax authorities want a snapshot at the entry date for their wealth-tax or arrival-rebasing regimes.

Departure week: P85, last UK address, leaving-day record

If you file self-assessment, you do not need to send a separate P85; the residence position will be confirmed via SA109 in the departure-year return. If you do not file self-assessment, send P85 within the first month after departure so HMRC can issue any in-year tax refund and recode payroll if you continue to receive UK employment income.

If your employer is paying overseas-period salary into a UK account, request a no-tax (NT) code from HMRC so PAYE stops. This is independent of NRL1; PAYE handling and NRL handling are separate.

The first 90 days as a non-resident

18. NRL1 in flight, agent withholding 20%

Until your NRL1 approval letter lands, the agent withholds 20% of gross rent. Track each quarter's NRL2 return so that, when approval comes through, the cumulative withheld amount is offset against the year's actual tax liability on the eventual self-assessment return. Average wait: six weeks from posting (per the HMRC guidance verified in May 2026).

19. Self-assessment registration if not already in place

If David has never filed self-assessment before (his ex-residence becoming a rental is his first letting income), he registers via the gov.uk online "register for Self Assessment" route by 5 October following the end of the first tax year of letting. The departure-year return is then due by 31 January the year after.

20. Bookmark the NRCGT 60-day clock

Non-residents must file the 60-day NRCGT return on every UK land disposal regardless of whether tax is due, including indirect disposals of shares in property-rich entities (under Schedule 4AA TCGA 1992, the ≥25% / ≥75% test). UK residents file only where tax is due. The non-resident threshold is much tighter; build this into the workflow from day one of non-residence, not the day of the first sale.

21. Pension contribution review

Confirm with your pension provider that contributions have ceased or moved onto the £3,600 transitional allowance basis. Pension contributions paid in error after non-residence can be recovered but are administratively painful.

The pre-departure CGT decision: sell before, sell after, or hold

This is the decision that recurs most often in the planning conversation, and the timeline above puts it at the six-month mark for a reason. The variables:

Factor	Sell before departure (UK resident)	Sell after departure (non-resident)
CGT rates (residential)	18% / 24% (from 30 October 2024)	18% / 24% (same)
Annual Exempt Amount	£3,000 per individual	£3,000 per non-resident individual (per HMRC rules)
Rebasing	None (use full historic base cost)	Election to rebase to 5 April 2015 (residential)
60-day reporting	Only where tax due	Always, regardless of tax due
s.10A recapture risk	None	Yes, if you return within 5 years
Treaty interaction	None (UK source, UK resident)	UK has primary taxing rights under most DTAs Article 6/13

The non-resident rebasing election (Schedule 4ZZA TCGA 1992 for residential, FA 2019 reform for non-residential and indirect) is the structural feature: a property bought in 2007 at £180,000 with a 5 April 2015 value of £240,000 and a 2027 sale price of £360,000 produces a UK-resident gain of £180,000 but a non-resident rebased gain of £120,000. At 24%, that is a £14,400 CGT saving from rebasing alone.

Against that, the s.10A recapture catches landlords whose move is shorter than 5 years. The Owens, returning to Australia for what they plan as a 2-year posting, would have any non-resident sale gain pulled back into their UK return year. The pragmatic answer for short-stint movers is to either sell well before departure or hold until permanently non-resident.

A worked example for Mark and Sarah (permanent move, 3 Manchester flats, combined latent gain of £210,000 at today's values):

• Selling all three pre-departure in 2026/27 produces a gain of £210,000, less £6,000 combined AEA, taxed at 18% on basic-rate slice and 24% above. Approximate CGT bill: £47,000.
• Selling all three post-departure in 2028/29 (after split-year exit to Spain in April 2027) produces, with April 2015 rebasing, a smaller combined gain of around £140,000. Same rate structure; approximate CGT bill: £30,000. Plus Spanish CGT on the same gain (the UK pays first under Article 13, credited in Spain under Article 23).
• Net of UK tax saving (£17,000) and Spanish tax cost, the optimal answer depends on Spanish CGT rates and any holding-period reliefs in Spain; for residential property held more than a year, Spain typically taxes at 19% to 28% with a credit for UK tax paid, so a net Spanish cost of around £6,000 to £10,000 leaves Mark and Sarah ahead by selling post-departure.

This is illustrative; both numbers and treaty interactions are case-specific. The UK-Spain treaty (signed 2013) follows the OECD Model: Article 6 gives the UK primary taxing rights on UK property income, Article 13(1) does the same on UK property gains, and Article 23 sets out the credit method by which Spain offsets UK tax against its own. Always run the calculation against the specific portfolio.

Common mistakes

1. Posting NRL1 before leaving. HMRC processes NRL1 as a non-resident application; sending it before you have left can cause it to bounce back. Post it on or after departure.
2. Treating the personal allowance as guaranteed. Most UK and EEA nationals retain it under domestic law (section 56 ITA 2007), but non-EEA citizens depend on the DTA. Check the HS300 helpsheet for your specific country.
3. Forgetting Companies House for BTL SPVs. Directors of UK limited companies who become non-resident must update their service address; under the Economic Crime and Corporate Transparency Act 2023, the ID verification regime applies to non-resident directors too.
4. Storing furniture in the old home. If the property is "available to you" for SRT purposes, the only-home automatic UK test can keep you UK-resident even if you spend almost no time there. Genuinely let the property or sell it.
5. Closing the UK bank account. Re-opening from abroad is much harder than keeping it open with an updated address.
6. Underestimating the agent compliance burden. Family arrangements (a brother or parent collecting rent) trigger the same NRL2 quarterly and NRL6 annual obligations as a high-street agent. Cheap can be expensive when penalties land.
7. Missing the 60-day NRCGT return. Non-residents must report every UK land disposal within 60 days, regardless of whether tax is due. £100 + £10/day late penalties accrue fast.
8. Assuming domicile still matters for IHT. The residence-based IHT regime from 6 April 2025 replaced the deemed-domicile rules. A 10-of-20 residence test now decides worldwide-asset exposure; UK property stays in the UK IHT net regardless.

What to do next

Walk back from your planned departure date and write down the dates for each month-marker beat in this checklist. Hand the calendar to whoever will hold the work in your absence (spouse, agent, accountant) so that the NRL1 posting, the 60-day NRCGT trigger, and the SA109 filing all have a named owner. The most expensive mistakes in expat landlord cases are not the wrong-decision mistakes; they are the missed-deadline mistakes.

For the strategic decisions (residence-year targeting, sell-or-hold, split-year viability) it is worth a structured planning conversation with an adviser who handles non-resident clients regularly; the form below routes you to the right person at Property Tax Partners.

Related reading

• Temporary Non-Residence: The 5-Year CGT Recapture Rule for Property Investors, the sell-or-hold worked-example context that sits behind the 5-tax-year section 10A decision in this checklist.
• Returning to the UK After Non-Residence: The Property Portfolio Pathway, the return-side bookend covering split-year arrival cases, section 10A recapture, and NRL1 cancellation.
• NRCGT Indirect Disposal: Shares in UK Property-Rich Companies, relevant for landlords with share-held property whose departure triggers the indirect-disposal regime as well as the direct regime.
• The UK-Spain Tax Treaty for Property Investors, the post-Brexit landlord context covering IRNR, Patrimonio, and the Spanish wealth-tax interaction for Spain-bound landlords.