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What can you actually afford?

See a real number, not a rough guess: factor in your income, your partner's, and what you actually spend, not just a lender's multiple of salary.

Most affordability calculators just multiply your salary by a fixed number. That tells you what a bank might lend, not what your household budget can actually carry once the mortgage, bills, and everything else you already pay for are accounted for.

The lender's shortcut

4.5× salary

On a combined £70,000 income, that is roughly £315,000, as an example. It ignores the loan you're still paying off, a £400 childcare bill, or the fact one of you is about to drop to part-time.

Your household budget

What's left over

Start from what actually lands in your account each month: both salaries, minus existing loans, minus regular outgoings, minus what you want left over. That's the number that tells you what you can actually afford, and whether it still holds up if a rate changes.

What actually gets counted

  • Real income, real outgoingsYour actual salary and your partner's, not a combined guess.
  • What's already spoken forExisting loans, individual expenses, and savings, budgeted for before the new mortgage payment lands.
  • One figure per personNot a single household number: what you'd have left in your budget, and what they'd have left, separately.
The myhousemate dashboard: £2,565 left over this month, on track, 49% of income unspent, plus costs outstanding, loan repayments, mortgage balance, and how much was saved this month split between each person

A budget like this doesn't stop being useful the day you move in. Your income changes, a fixed rate ends, a bill goes up: the number updates instead of going stale the moment you calculated it.

Try it with real numbers

Works out the exact monthly payment, stamp duty, and cash you'd need for a price you're considering. No login needed.

House price£340,000
Deposit10% · £34,000
Interest rate4.8%
Mortgage term30 years
Deposit£34,000
Monthly payment£1,605
Total interest£271,971
Cash needed£41,000

Stamp duty (SDLT)

£7,000
Up to £125,000 · 0%£0
£125,001–£250,000 · 2%£2,500
£250,001–£925,000 · 5%£4,500

Affordability

Example households, not your numbers

In the app, this mortgage gets checked against your real House Budget so you know what's actually left each month. These examples shuffle as you adjust the calculator, on purpose, since they're not calculated from what you've entered:

Alex disposable income£1,270
Sam disposable income£895
See this live in the demo
Save this scenario in the app

Free during early access. Ready to see it with your own numbers?