A lender’s maximum and a comfortable household budget answer different questions. Use take-home income and the spending you expect after moving.
Start with the whole monthly bill
- Mortgage (a loan secured on your home), plus shared-ownership rent or equity-loan charges if relevant.
- Council Tax, energy, water, insurance and communications.
- Food, transport, childcare, dependants and debt repayments.
- Service or estate charges, maintenance and repairs.
- Annual or irregular bills divided by 12, personal spending and planned saving.
Replace estimates with statements, quotes and property-specific information. Check you have not included the mortgage twice or kept current rent in the future household budget.
Try a change in rate and term
A longer term can reduce monthly payments while increasing total interest. A higher rate can reduce or remove the money left over. The calculator includes a rate two percentage points higher as an illustration; it is not a lender’s stress test or a forecast.
Checked 25 October 2026. Rules and product availability can change; check the original information before acting.
MoneyHelper · Mortgage affordability ↗MoneyHelper · Buying and moving costs ↗GOV.UK · How to buy a home ↗MoneyHelper · Applying for a mortgage ↗Build a budget for life after moving.
Start with your current commitments. Use explained estimates for the home bills you have never paid.
Work through my monthly budget →