Calcsmith
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    Property calculators

    Buying, owning, or letting UK property comes with a stack of numbers. Our property calculators cover SDLT, mortgage affordability, overpayment savings, buy-to-let yields, and rental income tax — all with current 2026 rates.

    Mortgage overpayment
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    Stamp duty
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    Mortgage affordability
    Coming soon
    Buy-to-let yield
    Coming soon
    Rental income tax
    Coming soon
    LBTT Scotland
    Coming soon

    About property calculators

    UK property maths can shift dramatically based on where you buy, whether you're a first-time buyer, and whether the property is a second home. Stamp duty in England differs from LBTT in Scotland and LTT in Wales. Mortgage affordability depends on lender stress tests, not just headline rates. These calculators give you grounded estimates so you can compare scenarios before you talk to a broker. See our tax category for capital gains on property sales.

    See also: Salary, Tax, Pension

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