Remortgaging from abroad: switch, move lender, or go buy-to-let

When your fixed rate ends and you live overseas, staying with your current lender is usually the path of least resistance. Moving to a new one is possible, but you're back in the expat mortgage market with all its paperwork.

The short version

• A product transfer is a new deal with your existing lender. It's usually quicker and simpler, and many lenders offer one to borrowers abroad who are up to date with payments [1].
• A full remortgage means moving to a new lender. It can be cheaper, but you'll face fresh checks on overseas income, and fewer lenders will consider you.
• FCA rules let lenders use a lighter affordability check when you switch to a more affordable deal without borrowing more, as long as you haven't missed payments in the last 12 months [2].
• If you've let your UK home, your lender needs to know. You'll either need consent to let or a buy-to-let mortgage, which usually needs at least 25% equity and rent covering about 125% of the payments [3].
• If you repay from income in another currency, FCA rules on foreign currency loans can apply, including a warning when the exchange rate moves more than 20% [4][5].

Product transfer or full remortgage?

MoneyHelper sums it up neatly: a product transfer is picking a new deal with your existing provider; a remortgage is shopping around and moving to a different one [1]. You can usually line up a new deal up to six months before it needs to start [1].

For most people abroad, the product transfer wins on hassle alone. Your lender already knows you and the property, and you avoid a new round of identity checks across time zones. The catch is that you're limited to your lender's range, and some lenders offer borrowers who've moved abroad a narrower range than UK residents.

What the FCA rules allow when you switch

The FCA wants borrowers to be able to switch to a better deal without being trapped by tougher affordability rules. MCOB 11.9 lets a lender use modified affordability checks when you're remortgaging with no extra borrowing, on the same property, and you've had no payment shortfall in the 12 months before you apply [2]. The new deal must be more affordable than your current one, or than the deal your current lender has offered you [2].

The guidance says the new mortgage doesn't have to be exactly like-for-like [2]. You can:

• extend the term, for example from 10 years left to 25
• move from interest-only to repayment, if it's more affordable
• move from a variable rate to a fixed rate

Lenders choose whether to use these modified checks, case by case, and must have a policy for it [2]. Not every lender will use them for someone abroad, but it's worth asking directly: "Will you assess me under MCOB 11.9?" tends to get a straighter answer than "Can I switch?"

The big caveat: borrowing more, even a little, normally means a full affordability assessment. That's where overseas income becomes an issue again.

Consent to let vs buy-to-let

If you moved abroad and let your UK home, your residential mortgage almost certainly says you can't let it without the lender's permission. Letting it quietly isn't a clever workaround. It can breach your mortgage terms and cause trouble with your insurance.

You've broadly got two options:

1. Consent to let. You ask your lender for permission to let the property on your existing mortgage, usually for a set period. Lenders often charge a fee, raise the interest rate, or both. It suits people who expect to come back and live there again.
2. Switch to a buy-to-let mortgage. A proper landlord product, either with your current lender or a new one. MoneyHelper says buy-to-let usually needs a deposit (or equity) of at least 25%, with a range from 20% to 40%, and that lenders usually want the rent to cover around 125% of the mortgage payments [3]. Most buy-to-let lending isn't regulated by the FCA, and fees and rates tend to be higher [3].

There's one exception worth knowing. Letting to a close family member, such as your daughter or your parents, is usually "consumer buy-to-let". That is regulated by the FCA and assessed under rules much like a residential mortgage [3].

Once it's let, the tax side follows you too. Rent from a UK property stays taxable in the UK while you're abroad, and the Non-Resident Landlord Scheme (form NRL1) decides whether tax is taken off the rent before it reaches you. Mortgage interest on a let home only gets basic-rate tax relief, not a deduction. The Budget 2026 rates annex also confirms that separate property income tax rates take effect from April 2027, the 2027/28 tax year, instead of the main income tax rates used for 2026/27 [6]. Check the rates that apply to your own figures before you fix for five years.

Currency risk when you repay from abroad

If you're paying a sterling mortgage out of a foreign salary, you're carrying currency risk every month. The FCA's foreign currency loan rules exist for exactly this.

• A regulated mortgage repaid wholly or partly from income or assets in another currency can count as a foreign currency loan [4].
• The lender must give you a right to convert to another currency, or put other arrangements in place, such as a cap or a risk warning [4].
• It must warn you regularly if your outstanding balance or monthly payments drift more than 20% from what they'd be at the original exchange rate [5].

If you also have sterling income, such as rent from the property itself or a UK pension, and the mortgage is repaid from that, it isn't a foreign currency loan [4]. On a let property, that's often the case.

Remortgaging is also a good moment to think about the currency. Pound conversions here use the Bank of England spot rate of 5 November 2026 (£1 = USD 1.35). A payment of £1,200 a month is about USD 1,620 today. A 10% swing in the pound moves that by about USD 160 a month, whichever way it goes.

What lenders ask of borrowers abroad

For a product transfer, sometimes very little: confirmation of the new deal, your contact details and, if you've let the property, the tenancy. For a new lender, expect much more:

1. Proof of identity and overseas address, plus your visa or residence permit.
2. Income evidence: payslips, an employer letter or contract, and several months of bank statements. Self-employed borrowers usually need accounts or tax returns.
3. Existing mortgage statements, showing a clean payment record.
4. The tenancy agreement and rent statements, if the property is let, and confirmation of your letting agent.
5. Your UK credit file, which can thin out after a few years away.
6. Identity checks for the legal work. A solicitor or conveyancer acting for you must verify your identity, and for someone living abroad that can mean a video call, a digital check with a chip passport, or a local lawyer or notary certifying you [7].

A simple timeline

1. Six months before your deal ends: check the end date, any early repayment charges and whether your lender offers product transfers to borrowers abroad [1].
2. Five months before: if the home is let, sort consent to let or a buy-to-let switch first. Don't let it slide.
3. Four months before: get your lender's offer in writing, then compare it with what the expat market would give you, including fees.
4. Three months before: if you're moving lender, start gathering documents and allow extra time for identity checks across time zones.
5. On the day: make sure the new deal starts when the old one ends, so you don't drop onto the standard variable rate.

If the lender's standard variable rate is all you're offered, don't panic. That's usually the moment to compare the market properly. Fancy a chat with people who've been there? Our community groups for Brits abroad are full of them. A tax adviser who knows both countries can check the tax side of letting.

Sources

1. MoneyHelper: Can I change my mortgage provider?
2. FCA Handbook: MCOB 11.9 Remortgaging with the same or a different lender with no additional borrowing
3. MoneyHelper: Buy-to-let mortgages explained
4. FCA Handbook: MCOB 2A.3 Foreign currency loans
5. FCA Handbook: MCOB 7A.4 Foreign currency loans and significant exchange-rate movement disclosure
6. HM Treasury: Budget 2026 overview of tax legislation and rates, Annex A
7. HM Land Registry: Practice guide 67, evidence of identity

Keep reading

• UK mortgages for Brits living abroad
• Renting out your UK home: the Non-Resident Landlord Scheme
• Keeping your UK home or selling it before you go
• UK income while you live abroad: rent, pensions and savings