Becoming an Accidental Landlord Through Inheritance: Tax Basics for 2026/27
Inheriting a property and renting it out rather than selling makes you a landlord for tax purposes overnight. How rental income tax, Capital Gains Tax base cost and mortgage rules apply in 2026/27.
Quick answer
Inheriting a house and deciding to rent it out rather than sell converts you into a landlord overnight, with all the same tax obligations as anyone who deliberately bought a buy-to-let โ rental income tax, Section 24 mortgage interest restriction if there's a mortgage, and Capital Gains Tax on any future sale, measured from the property's value at the date of death, not its original purchase price decades earlier.
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Rental yield calculatorRental income tax from day one
Once you start letting the property, rental income (less allowable expenses โ letting agent fees, insurance, repairs, and a basic-rate tax credit for any mortgage interest) is taxable and must be declared through Self Assessment. There's no grace period for "accidental" landlords โ the same registration and reporting obligations apply as for a deliberately acquired investment property.
The Capital Gains Tax base cost reset
One genuinely helpful feature of inheritance: your Capital Gains Tax base cost is reset to the property's market value at the date of death (the probate value), not whatever the original owner paid, potentially decades earlier. If you eventually sell, CGT is calculated only on the growth from that probate value to the sale price โ a significant difference from the original owner's own capital gain, which effectively disappears on death for CGT purposes (though it may have been relevant to Inheritance Tax already paid by the estate).
Capital Gains Tax Calculator
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Capital gains tax calculatorMortgaging an inherited property
Many inherited properties are owned outright, but some heirs choose to remortgage โ releasing equity to pay other beneficiaries their share, fund renovations, or simply formalise the letting arrangement with a proper buy-to-let product rather than an ad-hoc residential mortgage. Lenders assess this like any other buy-to-let application, based on rental yield covering the mortgage payment by their required interest cover ratio, alongside your own income and credit profile.
uk-buy-to-let-tax-guide-2026Section 24 still applies
If a mortgage is taken out against the property, Section 24 restricts relief for mortgage interest to a basic-rate (20%) tax credit for individual landlords, rather than deducting the full interest cost from rental income before tax โ exactly the same restriction that applies to any other individually owned buy-to-let, inherited or not.
Bottom line
Treat an inherited rental property exactly like a purchased one from the moment you decide to let it โ register with HMRC, understand your reset CGT base cost, and factor in Section 24 if you mortgage it, rather than assuming inheritance creates any special tax treatment.
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Frequently asked questions
Do I need to register as a landlord if I inherit and rent out a property?
Yes โ once you let the property out, you become a landlord in the eyes of tax law and, depending on your area, potentially local licensing schemes too. You'll need to declare rental income to HMRC via Self Assessment, regardless of how the property came into your ownership.
What's my Capital Gains Tax base cost if I later sell an inherited property?
Your base cost is the property's market value at the date of death (probate value), not what the deceased originally paid for it โ any increase in value from that probate valuation to your eventual sale price is potentially subject to Capital Gains Tax.
Can I get a buy-to-let mortgage on an inherited property that's mortgage-free?
Yes โ many accidental landlords remortgage an inherited property onto a buy-to-let mortgage to release some equity or simply to formalise the letting arrangement, though lenders will assess rental yield and your own financial position exactly as they would for any other buy-to-let application.
Does Section 24 mortgage interest restriction apply to an inherited buy-to-let?
Yes โ if you take out a mortgage against the inherited property (for example, to release funds or make improvements), the Section 24 rules restricting mortgage interest relief to a basic-rate tax credit for individual landlords apply exactly as they would to a deliberately purchased buy-to-let.
Is there Inheritance Tax to pay again when I eventually sell the property?
No โ Inheritance Tax was (or wasn't) due at the point of death, based on the estate's value at that time. A later sale of the property you inherited raises Capital Gains Tax questions on any growth since the date of death, not further Inheritance Tax.
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Related reading
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