Moving Abroad: Should You Sell or Rent Out Your Home Back Home?

Published on: June 28, 2026

Before you read. This is general information, not legal, tax, or financial advice. The figures and reliefs below are for the UK and US and change with each budget. Confirm your own position with a qualified, licensed tax professional before deciding whether to sell or let.

You have accepted the job overseas, or decided to retire somewhere sunnier, and now there is the house. Do you sell it, or keep it and rent it out while you are away? It feels like a gut call about money and sentiment. It is really a question about three rules that all switch on the moment you leave: how your rental income is taxed as a non-resident, a capital-gains exemption clock that starts running, and whether your mortgage even lets you rent the place out.

Get those three right and the decision becomes clear. Get them wrong and you can lose a valuable tax break, breach your mortgage, or get an unwelcome withholding surprise. This guide uses the UK and the US, the two best-documented systems, to show how it works. The principles, if not the exact rules, apply almost everywhere.

Rule 1: The day you leave, you become a non-resident landlord

Renting out a home from abroad is taxed differently from renting it out while you live there, and the country where the property sits usually taxes the rent first.

In the UK, this is the Non-Resident Landlord Scheme. If your "usual place of abode" is outside the UK (broadly, you are away for six months or more), your letting agent (or your tenant, if there is no agent and the rent is over £100 a week) is required to deduct basic-rate tax, currently 20%, from your rent and pay it to HMRC. You can avoid that deduction by applying to receive your rent gross (form NRL1), but this is not a tax exemption: you still report the income and settle up through a UK Self-Assessment return. You can deduct allowable expenses, and the UK personal allowance (£12,570, frozen through 2028-29) may cover part of the income for those entitled to it.

In the US, the rule depends on who you are:

• If you are a US citizen or green-card holder moving abroad, you remain a US taxpayer. You report your net rental income (rent minus expenses like mortgage interest, property tax, insurance, repairs, and depreciation) on your normal return, wherever you live. The Foreign Earned Income Exclusion does not shelter US rental income, but it is US-source and taxed in the US anyway.
• If you are a foreign national (a non-resident alien) who owns a US home, the default is harsher: a flat 30% withholding on your gross rent, with no deductions. You can escape that by making a "net election" under Section 871(d), which lets you be taxed on net profit at graduated rates instead. You make the election with your US non-resident return and give your property manager a Form W-8ECI so they stop withholding 30%.

In both countries you may then owe tax again in your new country of residence, with a double-tax treaty usually preventing you from paying twice. The headline point: renting from abroad comes with filing obligations and, often, withholding. Budget for the admin, not just the rent. Our guides to non-resident rental income tax and double-taxation treaties on foreign property go deeper on both.

Rule 2: A capital-gains exemption clock starts ticking

This is the rule people most often overlook, and it is frequently the deciding factor. The generous tax break on selling your main home does not last forever once you move out. Renting buys you time, but the clock is finite.

In the UK, this is Private Residence Relief (PRR). When you eventually sell, the gain relating to the years the property was your main home is exempt, and the final 9 months of ownership are always exempt on top, even if you have moved out and let it. (That final period was 18 months until April 2020; many older guides still quote the wrong figure.) The years it was fully let after you left are chargeable.

A few specifics matter for people abroad:

• Residential-property capital gains are taxed at 18% (basic-rate) or 24% (higher-rate), with a £3,000 annual exempt amount in 2025-26.
• "Lettings relief," which used to shelter a large chunk of gain for former-home landlords, was cut back in April 2020 and now generally applies only if you shared the home with your tenant. If you moved abroad and let the whole house, it usually does not apply.
• As a non-resident, claiming PRR for a given tax year generally requires you (or your spouse) to have stayed in the property for at least 90 nights that year.
• You must report and pay UK CGT within 60 days of completion.

In the US, this is the Section 121 exclusion. If you owned and lived in the home for at least 2 of the 5 years before selling, you can exclude up to $250,000 of gain ($500,000 for a married couple filing jointly). The clever part for someone moving abroad: because the test looks back 5 years and counts your last 2 years of residence, you can move out, rent the home for a couple of years, and still sell with the full exclusion intact, roughly a three-year window after you leave. There are two catches: any depreciation you claimed while renting is "recaptured" and taxed (up to a 25% federal rate), and if you rent too long and fall outside the 2-of-5-year window, you lose the exclusion entirely. You can also only use the exclusion once every two years.

The shared insight across both systems: there is a window in which you can collect rental income and still keep your main-home tax break, and a point past which you cannot. Knowing where that line falls is often the whole decision. If you are fairly sure you will sell within the window, renting in the meantime can be close to free from a CGT standpoint. If you will be away for many years, the exemption quietly erodes, which strengthens the case for selling sooner. The same main-residence logic applies when you eventually sell, as our guide to selling a home tax-free under the main-residence exemption sets out.

Rule 3: Your mortgage may not let you rent it out

A practical rule that catches people off guard: a standard residential mortgage is usually granted on the condition that you live in the property. Renting it out without telling your lender can breach the mortgage terms.

The fix is "consent to let," permission from your lender to rent the property out temporarily. Many lenders grant it for a defined period, sometimes for a fee or at a slightly higher interest rate, and may eventually require you to switch to a buy-to-let mortgage if the arrangement becomes long-term. The point is to ask first. Letting without consent can have real consequences, and it is an easy step to get right before you go.

A simple framework for deciding

Weigh these against each other:

• How long will you be away? A short, defined posting points toward renting (you keep the asset and likely keep the CGT break). An open-ended or very long move strengthens the case for selling, because the exemption window closes and management gets harder.
• Might you return to the property? In the UK, re-occupying before sale can restore relief for that final period; in the US, the home you live in is what qualifies. A genuine plan to come back changes the calculus.
• What is the cash-flow picture? Net rent after non-resident tax, agent fees, maintenance, insurance, and currency conversion, versus the certainty and liquidity of a clean sale.
• How much friction can you tolerate? Renting from abroad means a non-resident tax filing, a managing agent, lender consent, and exposure to voids and exchange-rate swings. Selling ends all of that.
• Where do you sit on the exemption clock right now? This is the one number most people have not worked out, and it often decides the question on its own.

Key takeaways

• Moving abroad flips three switches at once: you become a non-resident landlord, your main-home CGT exemption starts running down, and your mortgage's letting rules kick in.
• Non-resident rental income is usually taxed where the property is (UK: 20% withholding under the NRL Scheme unless you register for gross payment; US: net on your 1040 if you are a US person, or 30% gross for non-resident aliens unless they elect net treatment), then possibly again in your new country, with treaty relief.
• The CGT exemption has a finite window. The US gives you roughly three years after moving out to sell with the full Section 121 exclusion; the UK exempts your years of residence plus a final 9 months, but taxes the let years.
• Get "consent to let" from your mortgage lender before you rent, never after.

JanusHermes helps cross-border buyers and owners navigate property in 50+ countries in 11 languages, with the tax and legal context that actually drives the decision. Whether you sell or let, plan the move with the rules in front of you.

Related guides: Non-resident rental income tax, Selling a home tax-free: the main-residence exemption, and Double-taxation treaties and foreign property.

Disclaimer. Last reviewed June 2026. This article is general information for an international audience and is not legal, tax, or financial advice. Rules, rates, thresholds, and reliefs change, and they apply differently depending on your nationality, residency, and personal circumstances. Always confirm the current position with official sources (such as HMRC and the IRS) and a qualified, licensed tax professional before deciding whether to sell or let.

A note on the numbers: where no source is named, the market figures in this article (prices, yields, costs) are indicative estimates compiled from publicly available market data and industry reporting at the time of writing. Markets move and rules change, so treat them as a starting point and verify current figures with official sources before acting on them.