This article provides general information only and does not constitute personal financial advice. It has been prepared without taking into account your objectives, financial situation or needs. Before acting on any information in this article, you should consider whether it is appropriate for you and seek advice from a licensed financial adviser if necessary.

The Reserve Bank of Australia’s August 2026 monetary policy meeting has delivered its verdict on the official cash rate, with direct consequences for millions of Australians holding variable rate home loans or parking money in savings accounts. Whether the RBA holds, raises or cuts the cash rate, the decision ripples through the banking system within days, affecting how much you pay on your mortgage and how much you earn on your savings.

Understanding this mechanism helps you respond quickly and make informed decisions about your finances.

How the Cash Rate Affects Your Variable Mortgage

The RBA cash rate is the interest rate banks pay to borrow money overnight from each other. When the RBA changes this rate, banks typically pass the change through to variable rate home loans within two to six weeks. According to the Reserve Bank of Australia, lenders adjust their standard variable rates to maintain their net interest margins when funding costs change.

If the RBA raises the cash rate by 0.25 percentage points, a borrower with a $500,000 mortgage on a 25-year term could see monthly repayments increase by around $75 to $80. Over a year, that’s close to $1,000 in additional interest costs. Conversely, a rate cut of the same size would reduce monthly repayments by a similar amount.

Variable rate loans move with the cash rate, while fixed rate loans lock in a set rate for a specified term (typically one to five years). Borrowers on fixed rates are insulated from rate movements until their fixed period ends. As covered in foundational texts such as Principles of Macroeconomics 3e, central bank policy rate changes transmit to the broader economy primarily through the banking sector’s lending and deposit rates.

ASIC MoneySmart recommends that borrowers on variable loans build a buffer into their household budget to absorb potential rate rises. Even a modest increase can add hundreds of dollars to annual mortgage costs.

How the Cash Rate Affects Your Savings

Savings accounts and term deposits also respond to cash rate changes, though the relationship is less direct than with mortgages. When the RBA raises rates, banks typically increase interest rates on high-interest savings accounts (HISAs) and term deposits to attract deposits and meet regulatory liquidity requirements. When the cash rate falls, savings rates tend to follow, though banks may delay passing on cuts to protect their margins.

A saver with $50,000 in a high-interest savings account earning 4.00% per annum would earn $2,000 in annual interest (before tax). If the cash rate rises and the account rate increases to 4.50%, that same balance would earn $2,250, an extra $250 per year. For savers, rate rises are beneficial, while rate cuts erode returns.

Read also: Term Deposit Versus High-Interest Savings Account in Australia: Which Wins Right Now

Term deposits, which lock in a fixed rate for a set period (commonly three, six or 12 months), reflect the market’s expectations of future cash rate movements. If markets expect the RBA to raise rates, term deposit rates may already have priced in some of the increase.

According to Canstar, savers should compare rates across multiple institutions, as the spread between the best and average savings account rates can exceed one percentage point. The Financial Claims Scheme guarantees deposits up to $250,000 per account holder per authorised deposit-taking institution (ADI), so higher-rate accounts from smaller ADIs remain protected.

What Borrowers and Savers Should Do Now

If you hold a variable rate mortgage, consider:

  • Reviewing your current rate against the market. If your lender has not passed on previous cuts or has increased rates beyond RBA movements, contact them or compare offerings from other lenders.
  • Making extra repayments while you can. Paying even $50 to $100 extra per month can reduce your principal and build a buffer against future rate rises.
  • Checking whether refinancing to a lower rate (or fixing part of your loan) makes sense for your circumstances.

If you are a saver:

  • Compare current rates across banks, credit unions and building societies. Online comparison tools from Canstar and Finder update rates regularly.
  • Consider laddering term deposits (splitting funds across multiple terms) to balance access to cash with higher fixed rates.
  • For balances above $250,000, spread funds across multiple ADIs to stay within the Financial Claims Scheme guarantee.

Interest rates are subject to change. Always verify current rates and product terms at the lender’s website or by contacting them directly before making decisions. For personalised advice on borrowing, saving or refinancing, consult a licensed financial adviser or mortgage broker who can assess your individual situation.