The cash rate is the interest rate the Reserve Bank of Australia sets for overnight lending between banks, while a home loan interest rate is what your client’s lender charges on their mortgage. The two are linked: the cash rate influences funding costs across the market, but each lender sets its own rates and does not pass movements through one-for-one.
That gap between the official rate and the rate clients actually pay explains most confusion in this space, and it is where brokers add value. This page separates the two concepts and shows how changes flow through to the repayments clients actually make.
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What the cash rate actually is
The cash rate is the benchmark for unsecured overnight loans between banks, set by the Reserve Bank of Australia at its board meetings. Its job is economy-wide: supporting full employment, keeping inflation within its target band and maintaining financial stability. Consumers never pay it directly, and it can move even when your clients’ mortgages do not.
What an interest rate means for a home loan
A home loan’s interest rates are set by each lender from its own ingredients: wholesale funding costs, deposit pricing, capital requirements, operating costs, margin targets and competitive position. Two lenders facing identical market conditions routinely price standard variable products tens of basis points apart, because their funding mixes and appetite for growth differ.
How one reaches the other
When the RBA moves the cash rate, variable-rate lenders typically adjust within days, though the size of each adjustment varies with their funding position. Fixed rates behave differently: they price off longer-term wholesale markets, so they often move before any announcement as traders anticipate the decision. After the change lands, out-of-cycle moves happen too, with lenders raising or cutting independently of the RBA when their own funding economics shift.
The practical takeaway for clients: the cash rate is a signal worth understanding, but their own lender’s pricing decision is what changes their repayment.
Where the differences show up day to day
- Setting authority: the RBA Board sets the cash rate; individual lenders set every product rate.
- Scope: the cash rate applies to overnight interbank lending; home loan rates apply to decades-long customer contracts.
- Timing: cash-rate decisions arrive on a published schedule; lenders respond afterwards, sometimes partially or not at all.
The same distinction runs through other products: credit cards, car finance and personal loans all carry rates influenced by the same underlying costs but priced on their own risk and terms.
What brokers should watch when the RBA moves
Cash-rate announcements move sentiment quickly, and clients read the headlines before they read their statements. Expect questions about fixing or refinancing, and answer them from the client’s budget position rather than rate predictions, which nobody reliably makes. Broader conditions in the housing market, alongside wider economic indicators such as employment and inflation data, shape both lender appetite and borrower capacity between board meetings.
Each announcement cycle is also a natural trigger for portfolio reviews. When the cash rate shifts, check which clients sit above current market pricing, model their savings and raise refinancing where the numbers justify it. Confirm every figure against current lender pricing on the day, because published comparisons age fast after any move.
