Plan first-time buyer mortgage affordability using salary, deposit, monthly bills, budget, loan, and debt assumptions.
First-time buyer planning combines salary, deposit, affordability, repayment, bills and monthly budget. Use this page as an early structure before checking lender or broker information.
Enter the amount borrowed, the rate and the term.
Over 300 months you repay £330,434 on £200,000 borrowed. A longer term lowers the monthly payment and raises the total.
This is arithmetic on the figures you enter, not debt advice. It assumes the rate and the payment both stay the same and that nothing further is borrowed, which is rarely how a real balance behaves. For free, regulated help, talk to MoneyHelper or StepChange.
| Tax/source year | 2026/27 |
|---|---|
| Region | England/Wales/Northern Ireland |
| Tax code basis | 1257L where the page uses PAYE defaults |
| Pension basis | No pension deduction unless this example says otherwise |
| Student loan basis | No student loan unless selected in this example |
| What is not decided here | PayBreakdown does not decide payroll correctness, lender approval, benefit entitlement or employer compliance, and does not give regulated financial, mortgage, debt, tax, payroll or legal advice. |
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The figures on this page are worked from first-time buyer, using the values below. Open the calculator if your example salary differs.
This estimate is worked out on £35,000 annual gross. Interest rate, term, fees, deposit and the credit commitments you already have all move the result, and a lender applies its own affordability policy and credit checks on top. Treat the number as a way to see whether a repayment looks comfortable or stretched, not as an offer — and read it against your real bills, savings and any income change you expect. See how each deduction is worked out.
No. It is an estimate worked from published HMRC and GOV.UK figures for the current tax year, using the assumptions shown on this page. It cannot see your tax code history, benefits in kind or employer payroll rules, so check important decisions against your payslip, official guidance or a qualified adviser.
Yes. Open the linked calculator to change the salary, pension, tax code, region or student loan plan and the figures update as you type.
Last updated 2026-08-27. Checked by Sean Elsmore. Rates last checked against GOV.UK on 2026-08-07. Estimates are for planning and should be checked against official records where the decision matters.