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Mortgage payments
Monthly payment and total interest, and the difference between two rates.
Arithmetic only. This is not financial advice and not a mortgage offer or recommendation. Each rate is assumed fixed for the whole term; real deals often change rate after an initial period. With interest-only you still owe the full amount at the end. Lenders work out payments their own way; ask a regulated adviser or lender.
Sources
- Standard repayment (annuity) formula – our own arithmetic; compare with MoneyHelper’s free mortgage calculator · checked 2026-11-05
Official guidance
Directory updated:
- www.gov.uk · Housing/browse/housing-local-services
- www.gov.uk · Buying and tax/stamp-duty-land-tax/how-to-pay
- www.gov.wales · Buying and tax/land-transaction-tax-guide
- www.legislation.gov.uk · Buying and tax/ukpga/2003/14/section/55
- www.legislation.gov.uk · Buying and tax/anaw/2017/1/contents
- www.gov.uk · Land records/get-information-about-property-and-land
- www.legislation.gov.uk · Legislation/
Sources may change. Follow the original guidance for the relevant nation; a link does not confirm that a provision is in force.
All official sources