It provides an estimate based on the figures you enter (property price, deposit, interest rate, term, fees and any overpayments). Actual mortgage quotes can differ due to lender criteria, product fees, valuation results, repayment method, credit checks and how interest is calculated. Use this as a planning tool and confirm the final figures with a regulated mortgage adviser or lender.

With a repayment mortgage, your monthly payment covers interest and gradually repays the loan balance over the term. With interest-only, your monthly payment covers the interest only and the loan balance typically remains the same unless you make overpayments or repay the capital separately at the end of the term.

Overpayments reduce the outstanding balance, which can lower the total interest paid and may shorten the mortgage term. Some lenders limit overpayments (often per year) or charge early repayment fees, particularly during fixed-rate periods, so check the product terms before relying on an overpayment strategy.

LTV (loan-to-value) is the loan amount divided by the property value, expressed as a percentage. A lower LTV (larger deposit) can improve access to more competitive rates and wider product choice, while higher LTVs can mean higher pricing and stricter affordability checks.

Paying fees upfront avoids paying interest on those costs, but increases your cash needed at completion. Adding fees to the loan reduces upfront cash, but increases the loan balance and usually increases the total interest paid over time. If you are comparing options, run both scenarios to see the trade-off.

No. This calculator focuses on mortgage payments and (if selected) one-off mortgage-related fees. For a fuller view of affordability and buy-to-let viability, you should also budget for items such as insurance, maintenance, service charges (where applicable), letting agent fees, void periods and any tax implications relevant to your circumstances.