How much can we borrow on two incomes?

Two incomes, paying rent, and wondering what a bank would actually lend you? Put both your numbers in below. It takes about 2 minutes, and it shows its working.

By Jacob Williams · Updated

first home buyers settled
156first home buyers settled
median starting deposit
$52kmedian starting deposit
bought in Werribee
67bought in Werribee

Who's buying

Are you buying on your own or with someone?

Children or others who rely on your income.

Your income

Before tax, excluding super.

Overtime, bonuses or rent. Lenders count only part of this.

Do you have a HECS/HELP debt?

It doesn't appear on your credit file, but the repayment reduces your take-home pay.

Your partner's income

Before tax, excluding super.

Overtime, bonuses or rent. Lenders count only part of this.

Do they have a HECS/HELP debt?

What you spend

Groceries, transport, bills, insurance, entertainment — everything except rent and debt repayments.

Existing debts

The limits, not the balances. Lenders assess these as if fully drawn.

The loan

You'll be assessed at this plus the 3% buffer.

You could borrow around

$890,000

Estimate only

Somewhere between $800,000 and $890,000 depending on the lender. Assessed at 9.25%.

How we got there

Take-home income

After tax, Medicare and any HECS repayment

$10,647 / month

Living expenses

As you entered

− $3,300

Existing commitments

Cards, car and personal loans, BNPL

− $0

Left over each month

$7,347

Repayment at your actual rate

6.25% over 30 years

$5,480 / month

Repayment at the assessed rate

9.25% — what the lender tests

$7,322 / month

Debt-to-income ratio

Lenders look harder above 6

5.6

What this calculation assumes
  • Tested at 9.25% — your 6.25% rate plus the 3% buffer lenders are required to add.
  • Principal and interest over 30 years.
  • Living expenses of 3300 a month.
  • Credit card limits assessed at 3.8% of the limit per month.
  • No HECS/HELP debt included.
  • Tax estimated on current resident rates plus the Medicare levy. No offsets, salary sacrifice or private health rebate.
Learn more: Borrowing power & credit

This is a general estimate, not a loan offer. Lenders assess two incomes differently, so your real number can be higher or lower.

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What lenders look at when there are two of you

Lenders add your incomes together, then take away what they think it costs you to live, plus any debts either of you has. What's left decides the loan. So a car loan, a credit card limit or Afterpay on either name comes off the total, even if you never use it.

Why couples often borrow less than they expect (and how to fix it)

The three things I see shrink a couple's number most: credit card limits you don't need, a car loan on one of you, and HECS. Cutting a card limit before you apply can lift your borrowing straight away. HECS counts differently from lender to lender, which is one reason two banks can give you two very different answers.

Casual, part-time or on contract?

Lots of the couples I help have one steady income and one that moves around. Most lenders want to see some history first, but each one treats it differently. If one of you is casual or recently changed jobs, put it in the calculator honestly and then check with me. That's usually where the biggest difference between lenders shows up.

Your number is only half the picture

What you can borrow and what you can buy aren't the same thing. With the 5% deposit scheme, a couple can buy with 5% down and no lenders mortgage insurance, and Victorian first home buyers pay no stamp duty up to $600,000. So the deposit you've already saved may go a lot further than you think.

Of the 156 first home buyers I've helped settle, 81% were couples, and the median deposit when they started was $52k.

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Figures checked 7 October 2026.

General information only. Jacob Williams is Credit Representative 570865 of Alliance Financial Group Pty Ltd ACN 123 511 848 (Australian Credit Licence 390664).