Mortgage budget and payment planner
Explore household costs, illustrative mortgage payments and higher-rate scenarios.
This planner combines the income and costs you enter with a capital-and-interest mortgage illustration. It does not calculate how much you can borrow, predict a lender decision or assess mortgage affordability.
Use monthly take-home income and household costs you expect alongside the illustrated mortgage. Leave out any current rent or mortgage payment it would replace, but include housing costs that would continue. Blank optional costs count as £0, so check for omissions. Do not enter names, addresses or account details.
Your illustration
General illustrations only. These figures are not regulated mortgage advice, an affordability assessment, a product recommendation or a mortgage offer. They do not confirm eligibility or guarantee availability.
Enter your income, mortgage amount, annual rate and full term to see an illustration. Add ongoing costs for a more complete comparison.
The remaining balance is an arithmetic illustration, not an amount available to spend or proof that borrowing is affordable. Omitted spending and changes in circumstances can materially alter it.
If the interest rate changed
The same balance and term are used at your rate and at 1 and 2 percentage points higher. These are illustrative scenarios, not a lender’s stress test or a forecast.
| Annual rate | Mortgage / month | Balance / month |
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Mortgage cost illustration
Assumes monthly capital-and-interest payments, an unchanged rate for the full term and no overpayments. Excludes other purchase, legal, valuation, adviser and moving costs unless entered as household costs. It does not compare mortgage products or calculate APRC. Actual lender calculations and charges may differ.
Understanding the illustration
A positive balance is not an affordability verdict. The planner cannot verify income or costs and does not model future income changes, lender-specific accepted income, credit criteria or every expense. A negative balance is also not a mortgage lending decision.
Lenders use their own definitions of accepted income and expenditure. They may need supporting evidence and information about dependants, commitments, credit history, the term and the property. An income multiple or an arithmetic surplus cannot establish the amount a lender will offer.
Separate assessments
Eligibility concerns lender criteria. Affordability concerns the ability to maintain repayments. Suitability concerns whether a mortgage meets individual needs and circumstances. Meeting one initial criterion does not resolve the other assessments. Mortgage Bridge does not carry out these assessments or recommend a product.
Any regulated mortgage advice comes from an adviser acting through an FCA-authorised and regulated firm. The receiving firm explains its services, fees and evidence requirements. The lender makes its own lending decision. Acceptance is not guaranteed.
Debt and total costs
This planner does not recommend changing expenditure, repaying or retaining debts, using savings or making a mortgage application. Securing previously unsecured debts against a home increases the risk to the home. Lower monthly payments do not necessarily mean lower total costs; longer terms and fees can increase the amount repaid.
Free independent debt advice is available through MoneyHelper’s debt advice locator.
Mortgage Bridge has commercial relationships with receiving firms and receives a percentage of the adviser’s commission when an introduced case completes.
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Primary source: MoneyHelper: mortgage applications and affordability checks. Last reviewed: 24 October 2026. Subject to periodic review.
Your home may be repossessed if you do not keep up repayments on your mortgage.