UK Mortgage Calculator for Property Investors
Estimate your monthly mortgage payments and explore different rate scenarios.
Note that this calculator is not impacted by the Budget 2025 changes announced and remains effective for 2026 tax year and beyond.
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How this calculator works
This calculator estimates monthly mortgage payments and total interest costs for UK property investments. It supports both repayment and interest-only mortgages, with options for fixed, variable, tracker, and discounted rates.
Results show monthly payments, total repayment amount, total interest paid, and a year-by-year breakdown of how payments and interest accrue over the mortgage term.
For detailed guidance on mortgage types, interest rates, and financing strategies, see the Mortgage Calculator Manual and Financing Options Guide.
Frequently Asked Questions
How do I calculate monthly mortgage payments?
Monthly mortgage payments are calculated using the loan amount, interest rate, and loan term. Our calculator automatically computes your monthly payment, including principal and interest, for both repayment and interest-only mortgages.
Which type of mortgage is better for property investors?
The best mortgage type depends on your investment strategy. Repayment mortgages build equity over time but have higher monthly payments. Interest-only mortgages offer lower monthly costs, maximizing cash flow. See our Financing Options Guide for detailed comparisons.
Can I use this calculator for buy-to-let mortgages?
Yes, our mortgage calculator supports buy-to-let mortgages and can help you estimate monthly payments, total interest costs, and compare different mortgage products for UK property investments. Learn more in our Mortgage Calculator Manual.
Did the Budget change mortgage tax rules?
No. Mortgage calculations and mortgage interest treatment remain unchanged for individuals and companies.
Can I compare repayment vs interest-only?
Yes — switch between repayment and interest-only to compare monthly payments and lifetime interest.