Borrowing and credit

What is a fixed-rate mortgage?

Quick definition: A fixed-rate mortgage has an interest rate that stays the same for an agreed period, so payments are more predictable during that deal.

At a glance

  • The fixed period is usually separate from the full mortgage term.
  • Payments are more predictable during the fixed period.
  • Early repayment charges may apply during the deal.
  • The mortgage may move to another rate when the fixed period ends.

Explain it simply

A fixed-rate mortgage keeps the interest rate the same for a set period, such as two, five or ten years. This can make budgeting easier because the monthly payment should not change just because wider interest rates move during that fixed period. The fixed period is not usually the whole mortgage term. When it ends, the borrower may move to the lender's standard variable rate unless they choose a new deal, remortgage or make another arrangement.

Student explanation

Fixed-rate mortgages are popular because they reduce uncertainty for a limited period. The borrower trades flexibility for payment certainty: the rate is fixed, but the deal may include early repayment charges or limits on overpayments. Students should separate the product period from the mortgage term. A person might have a 25-year mortgage with a 5-year fixed rate, then need a new product after five years. Fixed rates can be higher or lower than variable options depending on market conditions and lender pricing.

Professional explanation

A fixed-rate mortgage is a mortgage product where the customer rate is contractually fixed for a defined product period. Pricing reflects swap rates, funding costs, lender margin, product fees, loan to value, risk appetite and competition. Customer outcomes depend on disclosure of reversion rate, early repayment charges, portability, overpayment rules and end-of-deal communications. Fixed-rate products reduce interest-rate volatility for borrowers during the fixed period but can limit flexibility. They can sit on repayment or interest-only bases depending on lender criteria.

UK example

A household chooses a five-year fixed-rate repayment mortgage so the monthly payment is predictable while childcare costs are high.

Why it matters

Fixed rates affect budgeting, remortgage timing and whether early repayment charges could apply.

Common misunderstanding

A fixed-rate mortgage does not usually mean the rate is fixed for the whole time the borrower owns the home.

Sources and further reading

Last reviewed: 14 July 2026

This glossary provides general educational information. It does not provide financial, legal or investment advice.