Tax Calculate

    Rental Income Tax Calculator

    Rental Property Details

    Enter your rental income details to calculate tax liability

    What is Rental Income Tax?

    Rental income tax is charged on the profit you make from renting out property in the UK. Our rental income tax calculator helps landlords and property investors understand exactly how much tax they'll pay on their rental profits, including the impact of allowable expenses and mortgage interest restrictions.

    Since April 2020, the way mortgage interest is treated for tax purposes has changed significantly. Previously, landlords could deduct mortgage interest at their marginal tax rate. Now, mortgage interest relief is restricted to the basic rate (20%) only, which has substantially increased the tax burden for higher-rate taxpaying landlords.

    Understanding how rental income tax is calculated is crucial for buy-to-let investors. Our calculator accounts for all allowable rental expenses, mortgage interest restrictions, and your total income to give you an accurate picture of your rental income tax liability and net rental profit after tax.

    Rental Income Tax Examples

    Basic Rate Taxpayer

    Annual Rental Income:£12,000
    Allowable Expenses:£2,000
    Gross Rental Profit:£10,000
    Mortgage Interest:£3,000
    Net Rental Profit:£7,000
    Tax at 20%:£1,400
    Mortgage Relief (20%):£600
    Total Tax Due:£800
    Net After Tax:£9,200

    Higher Rate Taxpayer

    Annual Rental Income:£12,000
    Allowable Expenses:£2,000
    Gross Rental Profit:£10,000
    Mortgage Interest:£3,000
    Net Rental Profit:£7,000
    Tax at 40%:£2,800
    Mortgage Relief (20%):£600
    Total Tax Due:£2,200
    Net After Tax:£7,800

    Allowable Rental Expenses

    What You Can Deduct

    • ✓Letting agent fees and commissions
    • ✓Property maintenance and repairs
    • ✓Buildings and contents insurance
    • ✓Safety certificates (gas, electrical, EPC)
    • ✓Legal and professional fees
    • ✓Accountancy fees
    • ✓Advertising for tenants
    • ✓Ground rent and service charges

    What You Cannot Deduct

    • ✗Capital improvements or renovations
    • ✗Mortgage capital repayments
    • ✗Personal expenses or costs
    • ✗Stamp duty on property purchase
    • ✗Furniture and fittings (use capital allowances)
    • ✗Your own time and labour
    • ✗Cost of extending or improving property
    • ✗Travelling costs to collect rent

    Rental Income Tax Rules 2026/27

    Tax Rates

    • Basic rate: 20% (income up to £50,270)
    • Higher rate: 40% (income £50,271 - £125,140)
    • Additional rate: 45% (income over £125,140)
    • Mortgage interest relief limited to 20% only

    Key Dates

    • Self Assessment registration: by 5 October
    • Tax return filing deadline: 31 January
    • Payment on account due: 31 January & 31 July
    • Property allowance: £1,000 per year

    Frequently Asked Questions

    How is rental income tax calculated in the UK?+
    Rental income tax is calculated on your net rental profit (rental income minus allowable expenses). The tax rate depends on your total income: 20% for basic rate taxpayers, 40% for higher rate taxpayers, and 45% for additional rate taxpayers. Mortgage interest is restricted to basic rate relief only.
    What expenses can I deduct from rental income?+
    Allowable rental expenses include: letting agent fees, property maintenance and repairs, insurance, safety certificates, accountancy fees, legal fees, and advertising for tenants. You cannot deduct capital improvements, personal expenses, or mortgage capital repayments.
    How does the mortgage interest restriction work?+
    Since April 2020, mortgage interest can only be offset against rental income at the basic rate (20%). Higher and additional rate taxpayers cannot claim relief at their marginal tax rate. This significantly affects the profitability of buy-to-let investments.
    Do I need to pay tax on rental income if I live abroad?+
    Yes, UK rental income is taxable regardless of where you live. Non-UK residents may be subject to different rules and should seek professional advice. You may also need to pay tax in your country of residence, though double taxation agreements may provide relief.
    What is the Rent a Room scheme?+
    The Rent a Room scheme allows you to earn up to £7,500 per year tax-free from renting out a room in your main home. If your rental income exceeds this, you can choose to pay tax on the excess or calculate tax in the normal way.
    When do I need to register for Self Assessment?+
    You must register for Self Assessment if your rental income exceeds £1,000 per year (after the property allowance). You need to register by 5 October after the end of the tax year in which you first received rental income.
    Can I offset rental losses against other income?+
    Rental losses can be carried forward to offset against future rental profits from the same or other rental properties. However, you cannot offset rental losses against employment income or other types of income.
    Is this calculator accurate for my tax return?+
    Our rental income tax calculator provides accurate estimates for standard buy-to-let scenarios. However, your actual tax calculation may involve additional factors like capital allowances, furnished holiday lettings, or commercial property rules that aren't covered here.

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