# How Big a Mortgage?

How Big a Mortgage is an independent UK mortgage exploration website. It provides illustrative calculations, not mortgage advice, lender approval or a mortgage offer.

## Main pages

- Calculator: https://howbigamortgage.co.uk/
- How mortgage calculators work: https://howbigamortgage.co.uk/how-it-works/
- Worked mortgage examples: https://howbigamortgage.co.uk/calculations/
- Mortgage guides: https://howbigamortgage.co.uk/guides/
- About and editorial approach: https://howbigamortgage.co.uk/about/

## What the calculator does

- Illustrates borrowing from adjusted household income, deposit and a maximum LTV.
- Calculates capital-and-interest mortgage repayments from balance, annual interest rate and term.
- Compares monthly repayment, total interest and repayment terms.
- Estimates supported UK residential property taxes and separates buying and ownership costs.

All visible calculations use the shared tested domain engine and the assumptions listed on the methodology page. Time-sensitive assumptions and official tax sources are maintained centrally.