How the RBA cash rate flows through to Australian property prices

A 25 basis point cut from the RBA does not move property prices 25 basis points the next morning. It moves the ceiling on what the marginal buyer can borrow by roughly $15,000 to $20,000, and a fraction of that flows into recorded sale prices over the following 6 to 12 months. The chain has more links than most commentary admits, and each link adds either a haircut or a delay.

This article walks the chain from the RBA board room to a recorded sale price, with the numbers attached.

The transmission chain

The cash rate is the rate banks pay each other for overnight liquidity. It is not a mortgage rate. It feeds bank funding cost through several layers: deposit pricing, wholesale debt, and the bank bill swap rate that anchors most variable lending. From there, it sets the rate a borrower pays.

The chain looks like this in practice:

• Cash rate sets the floor on overnight bank funding.
• Bank funding cost moves with cash rate changes, deposit competition, and wholesale credit spreads.
• Mortgage ratereflects funding cost plus the lender's margin and discounting policy.
• APRA serviceability buffer adds 3 percentage points on top of the contracted rate when banks assess capacity.
• Maximum borrowing is the loan size that services at that buffered rate against your income and expenses.
• Marginal price ceiling is what the highest-bidding borrowed dollar can pay for a property. Recorded sale prices follow with a lag.

Each link can absorb part of the move. A 25bp RBA cut does not have to flow through as a 25bp mortgage cut, and usually does not in full on the first pass. Banks pass on the cut to existing variable borrowers when they choose to, which historically runs at 80 to 100 percent of the move, but on a delay of two to six weeks.

The lag, in two parts

There are really two lags stacked on top of each other.

The first is the rate-pricing lag. New fixed-rate originations reprice immediately because the bank reprices its product sheet on the announcement. Variable-rate borrowers, who are most of the Australian book, see their repayment change roughly 4 to 8 weeks after the RBA decision once the bank has formally written to them.

The second is the market-translation lag. A borrower signing a contract on the day of a cut is settling under old serviceability terms. Buyers who get pre-approved after the cut do not turn up at auctions immediately, and vendors do not reprice until they see comparable sales come through. The gap between a rate move and the recorded median lifting is typically 6 to 12 months, sometimes longer at the top of the market where stock is thin.

Worked example: what 25bp does to a household

A couple on $200,000 combined income, no kids, no HELP debt, $20,000 of credit card limits. Pre-cut, the contracted variable rate is 6.4%. The bank assesses serviceability at 6.4% plus the 3-point APRA buffer, so 9.4%. Their maximum borrow lands around $760,000 (lender-to-lender variance is typically $20,000 to $30,000).

The RBA cuts 25bp. The bank passes on the full move (this is not always the case, but assume it for the example). Contracted variable rate falls to 6.15%. Buffered rate falls to 9.15%. The repayment that has to fit the household's surplus drops by roughly $115 per month on a $700,000 loan, which translates to about $15,000 to $20,000 of additional borrowing capacity for the same household. Maximum borrow lifts to roughly $775,000-$780,000.

Stack four 25bp cuts over twelve months. Buffered rate moves from 9.4% to 8.4%. The same household's borrowing capacity lifts $60,000 to $80,000. That is a material change in what they can bid on, and it is the mechanism that links a rate-cutting cycle to the price gains that follow it. You can run the numbers for your own income on the borrowing power estimator, and sanity-check the new repayment under the lower rate with the mortgage calculator.

Two caveats sit on this number. The DTI ceiling at most majors caps total debt around 6 times gross income, so a $200,000 household maxes out near $1.2M of debt regardless of what serviceability says. Households already pressed against that ceiling get less of a borrowing-capacity lift from a cut. The mechanics behind both constraints are in the borrowing power vs serviceability piece.

Rents do not move with the cash rate

Rate cuts feed prices, not rents. Rents are set by the balance of stock and tenants in a local market. The RBA cannot conjure rental supply, and a tenant's willingness to pay is set by their wage and the alternative of moving, neither of which the cash rate touches directly.

The indirect link runs through investor activity. Cheaper debt makes leveraged property more attractive at the margin, which lifts investor purchases, which adds to the rental pool 12 to 24 months later as new builds settle and existing-home investor purchases get listed for rent. That sequence eventually softens rent growth, but it can run in the opposite direction in the short term if investors buy from owner-occupiers and convert the stock back to rentals in undersupplied LGAs. The supply-side complement to this story is in how to read ABS Building Approvals, because approvals data is the cleanest leading indicator of the rental-supply impulse.

Macro context: the 2024-25 cycle and what 2026 is pricing

The cash rate peaked at 4.35% through 2023 and 2024 and began easing in late 2024. Through 2025, markets priced another 75 to 100bp of easing into 2026, with the OIS curve oscillating around three more cuts depending on the labour market print. The first-quarter 2026 inflation reads softened that view modestly. As of writing, market expectations sit at one to two more 25bp moves over the rest of 2026, with some chance of a longer pause.

Forecasts are not the point. The point is that household borrowing capacity in 2026 is on a slow upward trajectory from the 2023 peak in stress rates, and recorded sale prices have been catching up to that on the usual lag. A buyer with a fixed dollar deposit who was outbid in 2023 is not facing the same affordability picture in mid-2026.

Should you wait for cuts?

The math of waiting is the part most buyers skip. Take a $750,000 target property in a market growing at 4 percent per annum. Twelve months of waiting puts the price at roughly $780,000, a $30,000 increase. A 100bp cut sequence over the same twelve months lifts the same household's borrowing capacity by $60,000 to $80,000.

On those numbers the buyer is roughly $30,000 to $50,000 better off in capacity terms by waiting, ignoring rent paid in the meantime. Net of twelve months of rent at $650 a week ($33,800), the gap closes to roughly nothing. And it flips negative if growth runs above 4 percent or if the cuts get priced in faster than expected (which lifts prices ahead of the buyer's capacity).

The honest answer is that waiting for cuts is a real option with a real cost, and the cost is approximately the rent you pay during the wait plus the price growth that front-runs your borrowing capacity. In a flat or falling market, waiting wins. In a rising market with cuts already priced in, it usually does not. The RBA does not announce which regime is live, which is why the decision is closer to a coin toss than a calculation.

What this means in practice

Three takeaways for a 2026 buyer or investor.

• A 25bp cut shifts your borrowing ceiling by roughly the price of a small car, not the price of a house. Cuts accumulate; one cut does not change the picture much.
• Recorded prices lag the rate move by 6 to 12 months. Buying right after a cut is rarely the same as buying into post-cut prices, because the market has not finished translating the cut into asking prices yet.
• Rents respond to local supply and demand, not the cash rate. If you are buying for yield, model the rental side on vacancy and approvals data, not on what you think the RBA will do.

On Burbfinder, the borrowing-power and mortgage calculators take the cash-rate question down to a number for your own household. The numbers are doing more work than the headlines, and the headlines tend to skip the lag.