UK Mortgage Calculator 2026/27

UK Mortgage Calculator (2026/27 Stamp Duty included)

• Model repayment or interest-only mortgages, including deposits, rates, terms and overpayments
• Visualise how each payment splits between equity and interest
• See fixed-deal insights: equity built, interest paid, and estimated end-of-fix Loan to Value (LTV)
• Stress test repayments with interest rate changes
• Track multiple mortgages together with a combined monthly total
• Deposit planner to show how much you need to save to meet your target LTV
• Stamp Duty / LBTT / LTT: England, NI, Scotland and Wales — including FTB relief, additional property, and non-resident rules
• Rental yield calculator
• Save scenarios
• Dark mode support.