Sometimes. A number of lenders will count boarder income, part of the rent from a boarder or flatmate in your home, toward a home loan, with a written agreement and bank statements showing the payments, often only part of it. Others count none. Board from an adult child is treated more cautiously. Each $100 a month counted adds roughly $12,400 to what you can borrow.

Boarder income at a glance
Arrangement How lenders usually treat it
Flatmate or boarder with an agreement and regular payments Some lenders count part of it
Planned flatmate after you buy Rarely counted
Adult child paying board Often not counted, or counted cautiously
Separate granny flat with its own lease Treated as rental income

Why are lenders cautious about boarder income?

Because it can stop at short notice. A flatmate can move out, and board from family is often informal. Lenders that count it want evidence it has been paid regularly, usually for several months, and many only count part of the amount to allow for gaps.

What evidence do lenders want?

  • A written agreement with the boarder showing the amount and start date.
  • Bank statements showing the payments arriving.
  • Your tax return, if the income has been declared.

Income you plan to receive after buying is much harder to count, because there is no history. Some lenders will consider a rental appraisal for a separate dwelling on the property, such as a granny flat; see granny flat finance in NSW.

How much difference does it make?

At a 9% assessment rate over 30 years, each $100 a month of counted income supports about $12,400 more loan. If a lender counts $600 a month of a flatmate’s rent, that is about $74,600 more borrowing power. For a first home buyer close to their limit, it can be the difference that makes a two-bedroom unit work.

Are there tax effects?

Rent from a flatmate or boarder at a commercial rate is generally assessable income, and the share of your home that is rented out can lose part of the main residence exemption from capital gains tax. The ATO’s guidance on renting out part of your home explains how, and a tax agent can tell you whether it applies to your arrangement.

What about adult children paying board?

Many families have adult children at home who contribute. Lenders often treat that as a household arrangement rather than income, especially when the amount is modest or informal. If your adult child is a genuine part of the purchase, a joint application or a family guarantee may work better; see joint mortgages with parents.

Do you need the lender’s permission to take in a boarder?

Usually not for a home you own outright or with an ordinary home loan, but check your loan contract and your insurance. Strata buildings can have by-laws on short-term letting, and taking in a boarder can change your home and contents cover. If you plan to rent out the whole home later, that is a different change; see renting out your home.

What should you tell the lender?

Everything, including that someone else lives in the home. The lender may adjust your living costs, and leaving a boarder out of the application causes problems later.

Questions people ask

Can I use a flatmate’s rent to qualify for a home loan?

Some lenders count part of it with an agreement and payment history. A broker knows which ones.

Does board from my kids count as income?

Usually not in full, and often not at all, because it is an informal family arrangement.

Do I have to declare boarder income for tax?

Rent at a commercial rate is generally income. Check with your tax agent about your situation.

Charles Touma knows which lenders count boarder income and how much, so you can see whether it changes what you can buy. A free 30-minute call covers it. General information only, not credit or tax advice.

Sources: ATO, renting out part of your home; ASIC, Regulatory Guide 209, checked 18 October 2026.

General information only, not credit, legal or tax advice. Your situation is assessed properly before any recommendation. Government scheme details change; figures are current at the time of writing.