Higher interest rates usually push property prices down and lower rates push them up, mainly because rates decide how much buyers can borrow. Each 1 percentage point rise cuts a typical buyer’s borrowing power by about 8%, and prices tend to respond within months. That’s what has happened in 2026: after four rate rises took the cash rate to 4.60%, national home values fell for six months in a row to September and sit 5.2% below their March peak.
Why rates move prices
Most property is bought with a loan, so the price buyers can pay depends on how much they can borrow. Lenders test new loans at the actual rate plus APRA’s 3 percentage point buffer. When rates rise, that test rate rises too, and the same income supports a smaller loan.
| Repayments a buyer can afford | Test rate 8.63% | Test rate 9.63% | Test rate 10.63% |
|---|---|---|---|
| $4,000 a month | About $514,000 | About $470,000 | About $433,000 |
Our calculations over 30 years. 9.63% is the 6.63% average variable rate (Canstar, 2 October 2026) plus the 3% buffer. See how lenders work out borrowing power.
Rates also affect prices through:
- Holding costs. Rising repayments squeeze owners and investors, and some sell.
- Investor returns. Higher rates reduce the return on a rental property compared with cash in the bank.
- Confidence. Buyers who expect more rises tend to wait, and sellers who can wait often do too, so sales slow.
What 2026 shows
The cash rate rose four times in 2026, from 3.60% to 4.60%. National values peaked in March and had fallen 5.2% by September, with six consecutive monthly falls. The falls have been uneven:
| Market | Change in values, year to September 2026 |
|---|---|
| Sydney | -7.0% |
| Melbourne | -6.2% |
| Canberra | -1.6% |
| National | 0.0% |
| Combined regional markets | +5.6% |
| Perth | +10.1% |
| Darwin | +11.9% |
Source: Cotality Home Value Index, September 2026.
The most expensive markets have fallen furthest, because buyers there rely most on large loans. Cheaper markets with strong rent growth and population growth have kept rising despite higher rates.
What weakens or strengthens the link
Rates aren’t the only driver. The relationship can be weaker when:
- Supply is tight. A shortage of homes for sale or rent supports prices even as rates rise.
- Population grows quickly, adding to demand for housing.
- Rents rise strongly, making buying more attractive compared with renting and improving investor yields.
- Government schemes help buyers with small deposits, such as the First Home Guarantee.
- Tax settings change. The negative gearing and capital gains tax changes starting on 1 July 2027 may affect investor demand for established homes bought after 12 May 2026.
How long rate changes take
Borrowing power changes as soon as lenders change their rates, usually within days or weeks of an RBA decision. Prices usually respond over the following months, as buyers adjust their budgets and sales activity slows or picks up. In 2026, national values peaked in March, a month after the first rise, and fell in each of the following six months. See the cash rate explained.
What it means for buyers and sellers
- Buyers: Falling prices and higher rates often come together. Focus on what you can afford at today’s rate plus 2%, rather than trying to time the bottom.
- Sellers: Expect longer selling times and more negotiation in markets where values are falling.
- Investors: Check that the property’s cash flow works at current rates. See interest rate cycles and property.
For the latest rate outlook, see where home loan rates are heading.
Frequently asked questions
Do higher interest rates make house prices fall?
Usually, because higher rates reduce how much buyers can borrow. After four rate rises in 2026, national home values fell for six straight months to September, 5.2% below their March peak. But prices can still rise in some markets if supply is tight and demand is strong, as Perth and Darwin showed.
How do rates change borrowing power?
Lenders test your loan at the actual rate plus a 3 percentage point buffer. Each 1% rise in rates cuts the amount a typical buyer can borrow by about 8%. For someone who can afford $4,000 a month, that’s the difference between borrowing about $470,000 and about $433,000.
How long do rate changes take to affect prices?
Borrowing power changes within days or weeks of lenders changing their rates, and prices usually respond over the following few months. In 2026, national values peaked in March, shortly after the first rise in February, then fell for six consecutive months.
Sources
- Reserve Bank of Australia, Monetary Policy Decision, 29 September 2026
- Cotality, Australian housing values down for sixth straight month in September, 1 October 2026
- APRA, Macroprudential policy settings, May 2026
- Canstar, Average home loan interest rates, as at 2 October 2026
General information only. It does not consider your objectives, financial situation or needs and is not credit, tax or financial advice.