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Open tool →● Budget · Deposit · Rate stress · Browser-onlyHome affordability &
Home affordability &
mortgage capacity calculator
Estimate an illustrative home-price range from your own budget and deposit assumptions, then test how higher interest rates change it.
✓ No sign-up✓ Browser-based✓ Instant results
A numerical model—not a lending decision
This calculator is not intended to be relied on as the sole basis for a financial-product decision. It does not assess eligibility, approval, suitability or what any lender will offer. Consider obtaining advice from an appropriately licensed financial-services professional before making a financial decision.
Model assumptions
- Income uses the after-tax monthly amounts you enter; Utilaroo does not estimate tax or income stability.
- Your selected safety buffer is deducted in full before the mortgage-payment budget is calculated.
- The interest rate is assumed to remain unchanged except in the clearly labelled stress test.
- Cash available less your own upfront-cost estimate becomes the modelled deposit.
- The model does not assess lender serviceability, credit eligibility, stamp duty, grants, mortgage insurance or product-specific fees.
01 · Your assumptions
Build a budget-based estimate
Monthly household budget
Cash and mortgage assumptions
Ready when you are
Enter your own assumptions or deliberately load the labelled example.
02 · Rate sensitivity
Test a higher interest rate
Calculate a valid base estimate first
The stress test reuses your current payment budget, deposit, term and repayment frequency.
03 · Browser-local comparison
Compare up to three saved scenarios
Saved scenarios stay in this browser. Each column includes its repayment frequency and term so periodic budgets are not compared without context.
No saved scenarios
Return to Affordability and choose “Save current scenario”.
How the estimate is produced
Monthly mortgage budget equals take-home income plus other recurring income, less living expenses, existing debt payments, estimated ownership costs and your selected safety buffer. That budget is converted to the chosen repayment frequency and used in a standard present-value mortgage calculation.
Modelled deposit equals cash available less the upfront costs you enter. Estimated home price equals mortgage capacity plus that deposit. The stress test keeps the same payment budget and recalculates capacity at a selected higher rate.
Inputs remain in this browser. Only saved scenarios use local browser storage. This page has no lender referral, application, ranking, eligibility prediction, financial-detail analytics or advertising placement.
Current authoritative context
Use this result as one planning input
ASIC’s generic-calculator framework requires clear assumptions and limitations. Moneysmart describes mortgage-calculator results as models rather than predictions.