UK mortgage calculators
Compare repayments, terms, deposits, LTV targets, remortgage fees and interest-rate scenarios.
Choose a mortgages calculator
Mortgage repayment calculator UK
See what your home loan could cost each month.
MortgagesInterest-only mortgage calculator UK
Estimate interest payments and the capital still due.
MortgagesMortgage overpayment calculator UK
See the effect of a fixed extra monthly mortgage payment.
MortgagesLoan-to-value calculator UK: mortgage LTV
Find the share of your property funded by the mortgage.
MortgagesMortgage borrowing multiple calculator UK
Explore a borrowing limit from household income and a chosen lender multiple.
MortgagesMortgage repayment term calculator UK
Find the repayment time implied by a loan, fixed rate and monthly payment.
MortgagesOutstanding mortgage balance calculator UK
Estimate a repayment mortgage balance after a chosen number of payments.
MortgagesRemortgage fee break-even calculator UK
Work out how long monthly payment savings take to recover switching costs.
MortgagesMortgage rate change impact calculator UK
Compare payments on the same balance and remaining term at two interest rates.
MortgagesMortgage deal fee comparison calculator UK
Compare payments and fees over the deal periods of two mortgage offers.
MortgagesOffset mortgage interest saving calculator UK
Estimate initial interest avoided by offsetting eligible savings against a mortgage.
MortgagesLump-sum mortgage overpayment calculator UK
Model a one-off capital payment while keeping the regular mortgage payment unchanged.
MortgagesDaily mortgage interest calculator UK
Estimate interest on a fixed mortgage balance over a specified number of days.
MortgagesMortgage lifetime cost with fees calculator UK
Add separately paid fees to the full repayment cost of a constant-rate mortgage.
MortgagesMortgage deposit shortfall calculator UK
Find the extra deposit needed to reach a chosen mortgage LTV band.
MortgagesRent versus buy cash-flow comparison calculator UK
Compare monthly housing cash outgoings with a repayment mortgage and ownership costs.
MortgagesWhere to start
Start with the repayment calculator, then check the deposit and loan-to-value ratio. For an existing loan, examine balances, overpayments and the cost of switching deals.
UK data and coverage
Mortgage rates and fees are your inputs. The tools do not search offers or determine lending eligibility; country-specific purchase taxes are covered in the property tax tool.
Each calculator explains the formula, includes a worked example and identifies the assumptions that can affect your result. Official rule tables and dated price references are linked on the relevant pages.
Read the data sources and calculation methodology or browse all UK calculators.