Mortgage rate change impact calculator UK
Compare payments on the same balance and remaining term at two interest rates. Check the formula, worked example and limits before using your own figures.
Enter your figures
Change in monthly payment
Inputs changed. Select Calculate result to update your estimate.
Use your actual figures. Any prefilled price, fee, rate or return is an editable illustration, not a current product quote. Rates are scenarios, not predictions. No fees, rate changes within either scenario or lender eligibility assessment.
How the mortgage rate change impact calculator uk works
Compare amortised payments using the same balance and number of months.
Data basis: mathematical formula using your inputs. Example prices and rates are illustrative, not current market quotes.
Read about data coverage and updates
Worked example: mortgage rate change impact
This illustration uses the calculator’s example inputs. It is not a quote or a recommended financial decision.
- Mortgage balance (£)
- 200,000
- Years
- 20
- Current nominal rate (%)
- 4
- Alternative nominal rate (%)
- 6
Change in monthly payment: £220.90
Compare amortised payments using the same balance and number of months.
Mortgage rate change impact: questions answered
What does the mortgage rate change impact calculation include?
Compare amortised payments using the same balance and number of months. Use your actual figures. Any prefilled price, fee, rate or return is an editable illustration, not a current product quote. Rates are scenarios, not predictions. No fees, rate changes within either scenario or lender eligibility assessment.
Using your result
Example inputs are a starting point. Replace them with your figures and select Calculate result. Results are rounded for display; calculations use unrounded values.
Explore all 205 UK calculators