Expat Mortgage Calculator UK

UK Expat Mortgage Calculator for Borrowing, Repayments and Stamp Duty

Most mortgage calculators assume you live in the UK and get paid in pounds. If you earn in dollars or dirhams, are buying a flat to let while you are overseas, or face the non-resident stamp duty surcharge, they give you the wrong answer.

This one is built for expats. Put in your income in whatever currency you earn, plus the price of the property and your deposit. You will get an estimate of what a specialist lender might lend, the monthly payment and the stamp duty bill for England or Northern Ireland.

We designed it for British nationals living abroad and for foreign nationals investing in the UK. It works whether you are buying a home to move back to, a rental property, or somewhere for family members to live.

How the Calculator Works

Pick residential or buy-to-let first. Next comes the price, your deposit and the maximum loan-to-value your lender allows. On a residential purchase, type in your gross yearly income in your own currency and the current exchange rate. We turn that into pounds and then trim it by the currency adjustment you choose, which mirrors what expat lenders do before they apply an income multiple.

Choose buy-to-let and your salary takes a back seat. The calculator tests the loan against the monthly rent at a stressed interest rate, the way an underwriter would. Buying a holiday let instead? Our holiday let mortgage calculator works from seasonal weekly rates, the way holiday let lenders assess income.

At the bottom you set the rate, the term and whether you want repayment or interest-only. Three tick boxes then decide your stamp duty: non-UK resident or not, whether you own a home anywhere already, and whether you are a first-time buyer. You will see the largest loan available, the limit that is holding it back, your monthly payment, the stamp duty and how much cash you need on completion day. Want the numbers checked against real lender criteria? Speak to one of our advisers.

How UK Lenders Assess Expat Income

Expect a lender to discount your overseas earnings. Over a 25-year mortgage the exchange rate could swing a long way, so most expat lenders cut a foreign salary before they look at affordability. Dollars, euros, dirhams, Singapore dollars and Hong Kong dollars usually lose 0% to 15%. Yen, New Zealand dollars and rand sit around 15% to 25%, and emerging-market currencies can lose 25% to 40%. A few lenders refuse the rarer ones outright.

After that discount, residential lenders typically multiply what is left by around 4 to 4.5. Paid in sterling? Then there is no discount at all, and a British expat paid into a UK bank account will often borrow far more than a colleague on the same salary paid locally.

You will also need to prove the income. Lenders normally ask for your latest payslips, your contract, a few months of statements and something showing you are allowed to live and work in your current country. If you work for yourself, have two or three years of accounts to hand.

Deposits and Loan-to-Value for Expats

Plan on putting down 25%. That leaves a maximum loan of 75% of the price, the figure most expat lenders work to. Strong earners paid in a major currency can sometimes get 80% or 85% on a home they intend to live in, and British nationals who have kept a UK credit record occasionally go higher still. The more you put in, the more lenders you can choose from and the better the rate tends to be. As at 12 October 2026, the best fixed rates for UK-resident residential buyers run from about 4.83% at 60% LTV to about 5.09% at 85%, based on Which? and Moneyfacts data. Expat pricing usually sits above that. The calculator starts on 5%, so change it to match the rate you are quoted.

Your deposit will not be the only cash going out. Stamp duty, solicitors, the valuation and the lender’s arrangement fee all need paying before or on completion. The calculator adds these up so you can see the full sum you need.

Buy-to-Let From Abroad: The Rental Test

With a buy-to-let mortgage, the lender cares more about the rent than about what you earn. It checks that the rent covers the mortgage interest by a margin, normally 125%. The interest is calculated at a test rate of about 5.5%, not the rate on your offer. Where the borrower pays higher rate tax, some lenders raise the bar to 145%.

When the rent is not enough, the lender simply reduces the loan until the numbers work. Expect most lenders to want a personal income of at least £25,000 or so as well, even though it is the rent that sets the size of the mortgage. For rent cover, deposit and cashflow on a rental property, use our expat buy to let mortgage calculator UK, which is built for overseas landlords.

Stamp Duty for Overseas Buyers

Buy in England or Northern Ireland while living abroad and you pay an extra 2% on top of normal stamp duty. Own a home anywhere else in the world, overseas included, and the 5% rate for additional properties is added too. That is why most expat buy-to-let purchases carry a combined 7% over standard rates.

Living abroad does not stop you claiming first-time buyer relief on homes up to £500,000. You still pay the 2% non-resident charge, though. On a £285,000 purchase that works out as nothing at standard rates and £5,700 for the surcharge.

You may get the 2% back. Spend at least 183 days in the UK during a 12-month period that begins or ends within a year of completion and HMRC will refund it. Scotland and Wales have their own property taxes, so our stamp duty figure only covers England and Northern Ireland.

Worked Examples

Two typical cases show how the figures fit together.

Example 1: Moving Home From Dubai

A British couple living in Dubai earn AED 540,000 a year between them and intend to move back to Surrey within two years. Using a rate of 4.90 dirhams to the pound for illustration, that comes to roughly £110,200. Their lender counts 85% of it, about £93,670, and will lend up to 4.5 times that, so around £421,500.

The house they want costs £450,000. A 25% deposit leaves £337,500 to borrow, well within what their income supports and right at the lender’s 75% limit. Repaying over 25 years at 5% costs them about £1,973 a month.

They sold their UK home when they emigrated and do not own anything in Dubai, so the only extra is the 2% non-resident charge. Stamp duty comes to £21,500, which is £12,500 at standard rates plus £9,000 of surcharge. With their £112,500 deposit on top, they need £134,000 in cash before legal fees and other costs.

Example 2: Buy-to-Let From Singapore

A Singapore-based engineer, earning well above the minimum income, is looking at a £200,000 flat to let in Stockport. Putting down 25% means borrowing £150,000, and the flat should rent for £1,000 a month.

At the 5.5% test rate, interest on £150,000 works out at about £688 a month. To hit 125% cover the rent must be at least £860, so £1,000 clears it easily. The rent could support a loan of about £174,500, which means the 75% LTV limit is what caps him here, not the rent.

Because he owns an apartment in Singapore, he pays both surcharges. His stamp duty is £15,500, made up of £1,500 at standard rates and £14,000 for the combined 7%. Together with his £50,000 deposit, he needs £65,500 in cash.

Both examples are illustrations using typical lender criteria rather than real client cases. Rates, currency adjustments and lending limits differ between lenders.

What the Calculator Cannot Tell You

The calculator only knows what you type in. A lender will also look at your credit file here and abroad, which country you live in, how long you have been with your employer and where your deposit came from. Some lenders turn away applicants from particular countries entirely, and some are strict about gifted deposits or cash income.

Currency markets do not stand still while your purchase goes through, and the rate on completion day may look quite different from the one you saw at the start. If your deposit sits in a foreign currency, a bad rate on transfer day could leave you short, which is why plenty of buyers lock in a rate early through a currency specialist.

Frequently Asked Questions

Final Thoughts

If you have any questions relating to UK expat mortgages or the figures from our calculator, contact us today to speak directly with one of our expat mortgage advisors.

Expat Mortgages UK is an expat mortgage uk directly authorised and regulated by the Financial Conduct Authority. We work exclusively with expats and foreign nationals buying UK property with overseas income. Your home may be repossessed if you do not keep up repayments on your mortgage.

Call: +44 1494 622 555
Email: info@expatmortgages-uk.com

Related Pages

• Holiday Let Mortgage Calculator – seasonal income, rental stress test and stamp duty for expats buying UK holiday lets
• Buy-to-Let Mortgages for UK Expats – BTL criteria, rental yield requirements and lender expectations
• UK Expat Mortgage Application Process – how to structure your case and maximise approval chances
• How to Improve Your Chances of Getting an Expat Mortgage – practical steps that make an application easier to approve
• Understanding UK Mortgage Options for Expats – the main product types and which suits your plans
• UK Mortgage Rates for Expats – current best-buy rates and what drives expat pricing
• Expat Remortgages – remortgaging a UK property while living abroad
• Expat Mortgage Case Studies – purchases and remortgages we have arranged for clients living abroad