At 11.30am on Wednesday 29 July the Bureau of Statistics publishes the June quarter Consumer Price Index, and for once the hype is justified: this is the print that decides whether the Reserve Bank hikes for a fourth time this cycle on Tuesday 11 August or declares the job done at 4.35 per cent. The Board skipped July, June was a hold, and the statement language made the deal explicit. They are waiting for this number. Headline inflation has been running hot on fuel and energy, with forecasters expecting the June quarter to mark the peak at around 4.8 per cent annually, but the RBA does not move on headline. It moves on the trimmed mean, the measure that strips the volatile items and shows where underlying price pressure actually sits.
Scenario one: trimmed mean prints hot, August goes to 4.60
If the trimmed mean lands at 0.9 per cent or higher for the quarter, the annualised pace is running near 4 per cent and the Board's patience argument collapses. A 25 basis point hike on 11 August takes the cash rate to 4.60 per cent, and the big four pass it through to variable books within the fortnight, the way they have all three times this cycle. On a $600,000 owner-occupier loan at a typical 6.10 per cent variable, the move to 6.35 adds roughly $95 a month, and stacks on the roughly $285 a month the first three hikes already added against the start of the cycle. The sharper pain is borrowing power: every 25 basis points at the assessment stage cuts what a lender will approve by roughly 2.5 per cent, because serviceability is tested at your rate plus APRA's 3 percentage point buffer. A couple approved for $760,000 today is a couple approved for about $741,000 after a hike they did not see coming.
Scenario two: trimmed mean behaves, the peak is in
If the trimmed mean comes in at 0.7 per cent or below, the underlying pulse is back inside touching distance of the target band and the RBA holds on 11 August with language that starts preparing the ground for the other direction. Household inflation expectations already fell from 5.5 to 4.7 per cent in July, and the lenders are voting with their rate cards: 18 of them cut variable rates out of cycle in recent weeks and five cut fixed, which is what banks do when their treasury desks think the next official move is down. A hold does not cut your repayment, but it changes every decision downstream of it. Fixed rates priced at 5.99 per cent for one year are priced for this scenario; if it lands, the refinance window that opened in May gets wider, not narrower.
Banks reprice ahead of the RBA, not after it. Eighteen lenders cutting variable rates into a possible hike is the market telling you which scenario it believes.
What to do before Wednesday, by position
- Variable rate borrowers: find out your actual rate today, not the rate you think you are on. If it starts with a 6 and the sharpest market pricing starts with 5.89, you are paying the loyalty tax already, and a fourth hike compounds it. A repricing call to your bank costs nothing and lands better before the market moves than after.
- Borrowers coming off a fixed rate this year: your revert rate is the danger number, and a hike pushes every revert rate up 25 points. Get the revert in writing from your lender this week and run the refinance comparison against it, not against your old fixed rate.
- Buyers holding a pre-approval: your approval was assessed at current rates. A hike shaves roughly 2.5 per cent off borrowing power, and lenders reassess at the rate applying when the loan settles, not when the pre-approval was stamped. If you are close to contract, know your number under both scenarios before you bid.
- Anyone considering fixing: a 5.99 one-year fixed is a bet that Wednesday prints hot and August hikes. If Wednesday behaves, todays fixed specials will still be there Thursday. If it prints hot, they will not. That asymmetry is the entire decision.
One more thing on the day itself. The ABS publishes at 11.30am sharp, the ASX rate tracker reprices within minutes, and the economist notes follow within the hour. Ignore the headline number the news bulletins will run, because petrol and electricity rebates will distort it in both directions. The only line that matters is trimmed mean, quarterly. Below 0.7, the peak is in. Above 0.9, budget for 4.60. In between is the genuinely annoying zone where the RBA gets to keep everyone guessing until 2.30pm on 11 August, and we will publish the decision response that afternoon either way.
Disclosure: Your Finance Guide partners with Australian Lending and Investment Centre (ALG) ACL 505575 for broker matching, and ALG receives lender commissions on settled loans. A repricing call to your own bank pays a broker nothing and is still the first thing we tell you to do; the broker earns their keep when the bank says no and the market says yes. Rates cited reflect public rate cards in late July 2026 and move quickly in CPI week of all weeks.