If you’re an overseas property owner in the UK, it’s crucial to learn about the relationship between rental revenue and tax. Mortgage-related tax reduction affects your returns regardless of your nationality, which means this information is relevant to both British expats and foreign investors who are currently living overseas. However, the rules around what you can and cannot deduct have recently changed.
In this article, we’ll look at common traps for expat landlords, interest relief and permitted deductions.
What Is an Expat Buy-to-Let Mortgage?

Designed for non-residents who want to rent out UK properties, an expat buy to let mortgage UK often comes with more stringent requirements and higher interest rates. Many lenders will look at revenue in overseas currencies and require a solid credit history. Although these products offer good investment opportunities, expats should think carefully about the tax laws linked to rental revenue before they go ahead.
Your property cash flow can be significantly affected by the type of mortgage you choose, so careful planning and consideration is essential. Engaging a specialist expat mortgage broker with many years of experience working with expats will certainly make the process much smoother.
Navigating Tax Deductible Interest for Expats
Some landlords were able to deduct pre-tax mortgage interest from their rental income until April 2020. Nowadays however, things are different. Expats using expat mortgage UK buy-to-let loans are no longer entitled to a full interest exemption. Instead, they can receive a mortgage interest tax credit fixed at 20%.
Additionally, higher rate taxpayers now pay more tax on rental income than they did in the past and this rule applies regardless of where the landlord lives. Expats should also be aware that mortgage interest relief only applies to residential property lettings. Commercial properties are subject to fewer restrictions.
What Expenses Are Still Allowable?
Although mortgage interest relief is now limited, many other expenses are still tax-deductible. Expats can still deduct:
- Letting agent fees
- Property maintenance and repairs
- Insurance costs
- Service charges and ground rent
- Accountant’s fees
- Council tax (if the landlord pays this whilst the property is vacant)
These deductions apply as long as they are totally and solely for rental use. Personal expenses, which can include renovations rather than repairs, are not deductible. For instance, you can replace a broken boiler, but if you upgrade a kitchen to a high-end model, this will be treated as an improvement. Keeping clear, organised records of all property-related expenses is essential for creating an accurate and compliant tax return.
Traps to Avoid with Mortgage Deductions
Many landlords have fallen into the trap of misinterpreting the 20% tax incentive. Some property owners based overseas incorrectly believe they are entitled to comprehensive interest relief. This error can result in underpayment of taxes and potentially tough HMRC penalties.
Average home mortgage interest rates can also cause problems as the tax incentive remains at 20% even when interest rates climb. Rising interest rates won’t reduce the amount of tax you’re liable to pay. Expats must consider this when planning investments. It’s also very important to differentiate between residential and commercial property restrictions. Generally speaking, a proactive strategy is much more preferable to making last-minute changes when tax is due.
Income Tax and Non-Resident Landlords Scheme

Tenants or letting agents may deduct basic rate tax from rent payments before they pass them on to landlords living abroad. To receive rental income without deductions being made, expats must register with HMRC and meet compliance requirements.
Staying compliant is essential, and failing to do so can result in withheld income and potential penalties. Even when registered under the Non-resident Landlords Scheme, expat landlords still need to submit an annual Self-Assessment tax return to HMRC.
You’re advised to speak to a tax consultant with experience in foreign matters if you own several homes or have a large rental income. Expats must register under the UK’s Non Resident Landlord Scheme (NRLS) run by HMRC to receive gross rental revenue. If you fail to register, you could face reduced income, with tax being withheld from you.
Property Ownership Structures for Expats
Many expats consider buying UK property through a limited company. One advantage is that mortgage interest can be fully deducted as a business expense. However, corporate ownership comes with higher costs and more regulatory responsibilities. What the right choice for you is will depend on your personal tax situation, property value and investment goals.
Getting professional advice is essential before you take this route. For some investors, especially those who are building a property portfolio, the long-term tax benefits can outweigh the added complexity. Buying through a UK limited company enables you to deduct all your mortgage interest. However, the extra compliance, taxes and setup costs mean careful planning and bespoke financial guidance are crucial.
Conclusion
While expat mortgages can generate valuable property income, changing tax laws make professional advice essential. Knowing what mortgage interest is still eligible for relief – and what isn’t – can make all the difference when it comes to profits and penalties. By staying informed and compliant, expats may profit substantially from the UK property market. Accurate records and skilled assistance blended with a systematic strategy can help you maximise your investment. Check with Expat Mortgages UK today.
Thinking of letting your UK property from overseas?
Let’s make sure you’re claiming every deduction you’re entitled to while staying fully HMRC-compliant. Get in touch with Expat Mortgages UK today and let our specialists guide you through your options with confidence and clarity from the UK’s leading Expat Mortgage Broker.

