Borrowing power calculator

An estimate of what a typical lender might lend, from your income, the rent from a property you own and your debts, under the test lenders run, with each step of the working.

Your income

A payslip for each person's pay

Before tax, without super.

Before costs.

What you spend and owe

Coins coming down into a jar, what you spend each month

Food, bills, transport and the rest, without rent or loan repayments. Blank counts as $0.

The total limit on every card, not what is owed.

The new loan

A house and its loan as a stack of coins beside it

The yearly rate on the new loan, before the buffer.

The lender's test 3% buffer, 80% of rent, 3.8% of card limits, 30 years

Added to each loan's rate for the test. Lenders add at least 3%.

APRA expects lenders to take at least 20% off rent, for empty weeks and costs.

Counted on the whole limit, whatever is owed.

How do lenders test what you can repay?

A lender asks whether you would still have money left each month if rates rose. It takes your pay after tax and any HELP repayment, adds part of your rent, and takes off your living costs and your other debts. Every loan is tested at its rate plus a buffer of at least 3%. What is left must cover the new loan's repayments at its rate plus the buffer.

What the test counts
PartHow it is counted
Rent80% of it, which you can change
Living costsYours, or a typical lender's minimum if that is higher, which you can switch off
Loans you haveAt their rate plus the buffer, over the years left
Credit cards3.8% of the limit a month, whatever is owed, which you can change

A lender also checks your spending, uses a living cost for where you live, sets its own lowest test rate and limits large loans for your income.

Updated

Where the rules come from

General information only. Not financial, tax, legal or credit advice. The estimate is not a credit assessment, quote or offer.