How the Reserve Bank cash rate relates to home loan interest rates

If you are comparing home loans, the cash rate will come up constantly in headlines, lender announcements and conversations with brokers. Understanding what it is — and what it is not — makes it much easier to judge whether a rate you are being offered actually suits you.

This article explains the link between the cash rate and home loan rates, and shows you how to check the current cash rate yourself. It deliberately does not quote a live figure. The cash rate changes over time, and a number written into an article goes stale the moment it does. What stays useful is knowing where to look and what to compare against.

What the cash rate is, and who sets it

The Reserve Bank of Australia (RBA) is Australia's central bank, and it is responsible for monetary policy. The Australian Housing and Urban Research Institute (AHURI) describes the RBA as "the independent central bank with responsibility [for] monetary policy in Australia", and notes that the Commonwealth Government has put "the implementation of monetary policy that underpins interest rates at a legal distance through the creation of the independent and autonomous Reserve Bank of Australia".

That legal distance matters practically: decisions about the cash rate are made by the RBA, not by the government of the day, and not by lenders. When the cash rate changes, it is because the RBA has decided to change it.

The cash rate is the benchmark rate in that framework. AHURI states that "the cash rate has a strong influence over other interest rates, such as deposit and lending rates for mortgages".

How the cash rate reaches your home loan

The transmission runs roughly like this:

1. The RBA sets the cash rate as part of monetary policy.
2. The cash rate influences the interest rates banks pay on deposits and charge on lending, including mortgages (AHURI).
3. Your lender decides the interest rate on your specific loan, within the terms of your loan contract.

Step three is the one borrowers forget. The cash rate is a benchmark; your home loan rate is a contractual rate agreed between you and your lender. AHURI's wording — "strong influence" rather than "sets" — is the accurate way to hold it in your head.

Two consequences follow:

• A cash rate change does not automatically change your repayment. Your rate changes when your lender changes it, in line with your contract.
• Fixed and variable loans behave differently. A fixed rate generally holds for its fixed term; a variable rate can move. Which one you have determines what a cash rate move means for you.

Why your rate can move differently from the cash rate

Even within variable loans, pass-through is not uniform. Treat the following as questions to verify against your own loan documents and your lender's announcements rather than as universal rules:

• How much does your lender pass on? Lenders decide whether a change is passed on in full, in part, or with a delay. Check the announcement against the rate you actually pay.
• When does it take effect? Timing varies by lender and by product.
• What product are you on? Different products from the same lender can change by different amounts.
• What else is priced into your rate? Loan purpose, loan-to-value ratio, package arrangements and discounts can all affect the rate on your contract.
• How big is the effect on your repayment? That depends on your loan balance, remaining term and repayment frequency — not just on the rate change itself.

If you cannot answer these from your loan documents, ask your lender directly and get it in writing.

Cash rate versus your home loan rate

	Cash rate	Your home loan rate
Set by	The RBA	Your lender, under your contract
What it does	Influences deposit and lending rates, including mortgages (AHURI)	Determines the interest you pay on your loan
How often it can change	When the RBA changes it	When your lender changes it, as your contract allows
How many versions exist	One benchmark rate	One rate per loan, varying by lender, product and borrower
Where to check	The RBA's own publications	Your loan account, statement or contract

How to verify the current cash rate

Rather than trusting a figure quoted in an article, a forum post or a screenshot, check the source:

• Go to the RBA's own website (rba.gov.au). The RBA publishes its monetary policy decisions and the cash rate target. This is the authoritative source for the current setting.
• Note the date on the page you are reading. A cash rate figure without a date is not usable information.
• Read the decision statement that accompanies it. The RBA publishes a statement explaining its reasoning, which is more informative than the number alone.
• Cross-check the date against your lender's announcements. If your lender has announced a change, the date of the RBA decision and the date your rate changes are usually not the same day.
• Confirm your own rate separately. Log in to your loan account or read your most recent statement. Your contract rate is the number that governs your repayments.

Doing these five things takes a few minutes and replaces guesswork with something you can act on.

What this means when you are comparing home loans

Because the cash rate is a benchmark rather than your price, comparing loans means comparing what lenders are actually offering you:

• Ask for the current interest rate on the specific product, not the headline rate for the lender generally.
• Ask whether the rate is variable or fixed, and if fixed, what happens at the end of the fixed term.
• Ask what fees apply and how they affect the total cost, not just the monthly repayment.
• Ask how the rate has changed over recent years, and how changes are communicated.
• Check the comparison rate where one is provided, and read what it includes.

No one can promise where the cash rate goes next, and no one can promise what your rate will be in a year. Treat any statement about future rates as a view, not a fact.

Next steps

1. Look up the current cash rate on rba.gov.au and write down the figure and the date.
2. Find your own rate in your loan account or contract, and note whether it is fixed or variable — plus any fixed-rate expiry date.
3. Check your lender's recent rate announcements to see how past cash rate changes were passed through to your product.
4. If you are shopping around, collect the actual rate, fees and loan features for each product you are considering, so you are comparing like with like.
5. If a rate change would affect your budget, ask your lender how your repayment would be recalculated before assuming a figure.

If you want a structured way to think through what you are comparing, /money/home-loans/ covers the home loan basics, and /match/ can help you sort out which questions to take to a lender.

General information only

This article is general information about how the Australian cash rate relates to home loan interest rates. It is not personal financial, credit, tax or legal advice, and it does not take account of your objectives, financial situation or needs. Rates, fees and lender policies change, and the cash rate changes over time — always verify current figures against the RBA's own publications and your lender's documents before acting. Consider speaking to a licensed financial adviser or your lender about your circumstances.

Australian Cash is an independent information publisher. It is not a lender, broker, government body, regulator or comparison service, and it does not set or offer interest rates.