Non-Resident Landlord Tax: What UK Rent Actually Costs You Once You Leave

Keeping the UK flat and letting it out is the single most common thing British expats do on the way out of the country. It is also where the tax goes wrong most often, because the amount that leaves your rent each month has very little to do with the amount you actually owe.

This guide works the gap out in pounds, using the same tax engine as our take-home pay calculator. All figures are 2026/27 (thresholds frozen to 2028).

The 20% Is a Deposit, Not Your Bill

If you live abroad for six months or more in a year, HMRC treats you as a non-resident landlord — and that is a separate test from the Statutory Residence Test, so you can be UK-resident for tax and still be caught by it (GOV.UK).

Under the Non-Resident Landlord Scheme:

• Your letting agent must withhold the basic rate of income tax (20%) from your rent, at any rent level.
• With no agent, the tenant must do it — but only where rent tops £100 a week.
• The 20% comes off net rent, so deductible expenses paid in the quarter reduce it first (GOV.UK).
• Payments reach HMRC quarterly, and you get an NRL6 certificate by 5 July each year showing what was taken.

What You Actually Owe: Six Worked Examples

Property income attracts income tax but no National Insurance, so the real liability is simply the income-tax charge on your rental profit. The table assumes UK rent is your only UK-source income and that you can claim the personal allowance; expenses are shown at a representative 25% of rent.

Two patterns fall out of that table, and they matter in opposite directions.

All the way up to the higher-rate threshold you are lending HMRC money. Once profit clears the £12,570 personal allowance the overpayment settles at exactly £2,514 — 20% of the allowance the scheme takes no account of. Every year you do not file a return is a year you make HMRC a gift of it.

At the top of the table the deduction is too small. On £90,000 of rent the 20% withheld comes to £13,500, but the real bill is £14,432, because a chunk of the profit has crossed into the 40% band. That shortfall of £932 lands as a balancing payment on 31 January, usually alongside a payment on account for the following year.

How to Stop the Deduction: Form NRL1

You can ask HMRC to let your rent be paid gross. Individuals apply on NRL1, companies on NRL2 and trustees on NRL3. HMRC's condition is that your UK tax affairs are up to date — approval is about compliance history, not income level. Once granted, your agent stops withholding and you settle everything through Self Assessment instead (GOV.UK).

Gross payment does not reduce the tax. It changes when you pay it — which, if you are funding a move abroad, is often worth more than the tax itself.

The Mortgage-Interest Restriction Catches Expat Landlords Hardest

Since April 2020 individual residential landlords can no longer deduct finance costs from rental profits. Instead you get a basic-rate (20%) tax reduction on the interest, and it cannot create a refund (GOV.UK).

Take a property with £24,000 of profit before interest and £9,000 of mortgage interest:

• Basic-rate landlord: tax on £24,000 is £2,286, less the £1,800 reducer → £486.
• Higher-rate landlord (profit sitting in the 40% band because of other income): £9,600 less £1,800 → £7,800 — against £6,000 under the pre-2020 rules.

The restriction is why so many expat landlords discover their "profitable" UK flat produces a tax bill larger than the cash it generates. Because the reducer is fixed at 20% however much tax you pay, the pain scales with your rate — and expats who left because they were high earners are exactly the group it hits.

Do You Keep the Personal Allowance?

This is the single biggest variable in the table above. You can claim the £12,570 allowance as a non-resident if you are a British citizen, an EEA national, someone who worked for the UK government during the tax year, or a resident of a country whose double taxation agreement with the UK grants it (GOV.UK).

Most British expats qualify. But it is a claim, not a default — made on form R43 or through the SA109 residence pages — and it is worth £2,514 a year in basic-rate tax. There is also a £1,000 property allowance: gross property income at or below it needs no return at all, and above it you can deduct the £1,000 instead of actual expenses if that is better (GOV.UK).

Filing From Abroad Is Genuinely Harder

To declare rental profit as a non-resident you need SA100, the SA105 property pages and the SA109 residence pages. HMRC's own online service does not support SA109, so you must either file on paper by 31 October or use commercial software by 31 January (GOV.UK).

Missing the October paper deadline while assuming you have until January is one of the more expensive administrative mistakes available to a new expat.

And When You Sell: the 60-Day Rule

Non-residents must report a disposal of UK property or land to HMRC and pay any Capital Gains Tax within 60 days of completion. The obligation applies even if there is no tax to pay or you made a loss, and it covers non-residential property and land as well as homes (GOV.UK).

Sixty days is short when you are in another time zone, possibly without a UK bank account, and the sale is funding your next purchase. It is the deadline expat sellers miss most.

The Bigger Question

Run the numbers and a UK rental held from abroad is often a modest yielding asset carrying a disproportionate amount of admin: quarterly withholding, an annual return you cannot file the easy way, a finance-cost restriction that penalises exactly the people who left for tax reasons, and a 60-day gun to your head on exit. Plenty of people keep it anyway, for good reasons. Plenty of others keep it only because selling never rose to the top of the list.

Either way, the decision deserves the same arithmetic as the rest of your move — see Should I Leave the UK? for the take-home side, and country comparisons for where the money lands.

Frequently Asked Questions

Related Guides

Keep reading with these related guides:

• UK Tax for Non-Residents — the wider picture: NT codes, allowances, UK-source income
• Form P85 — telling HMRC you have left, and the refund that usually follows
• How to Become Non-Resident — the Statutory Residence Test and day-count traps
• Do I Still Pay UK Tax If I Live Abroad? — the full map of UK-source income
• Tax When Moving Abroad — split-year treatment and the leaver's checklist
• Should I Leave the UK? — compare take-home pay across destinations
• UK Tax Bands Explained — the rates behind every figure here
• All Tax Guides

Where You Become Resident: Compare the Tax

What the UK keeps taxing is only half the picture — your new country decides the rest. These comparisons put local take-home pay, expat regimes and social security next to the UK:

• UK vs UAE (Dubai) — no personal income tax on salary, dividends or gains
• UK vs Portugal — the IFICI successor to NHR
• UK vs Spain — the Beckham law and regional IRPF
• UK vs Cyprus — non-dom 0% on dividends and interest
• UK vs Singapore — low resident rates, no CPF for foreigners
• All country tax comparisons — every destination we cover