Is Now the Right Time to Revisit Your Home Loan? The Big Four Rate Hikes Explained

If you’re a variable-rate mortgage holder, you probably felt a familiar sting this week. Following the Reserve Bank of Australia’s (RBA) decision to lift the cash rate by another 25 basis points to 4.1%, the major banks wasted no time passing the hike on to borrowers.

Commonwealth Bank (CBA), Westpac, and ANZ have officially joined NAB in passing on the 0.25% increase in full. With household budgets already stretched to the limit by skyrocketing petrol prices, surging grocery bills, and rising insurance premiums, this news has many homeowners asking: Is it time to refinance?

Let’s break down what the latest hikes mean for your wallet, and what your options are.

How the Big Four Compare Post-Hike

With the new hikes taking effect in late March, here is a look at how the lowest advertised variable rates compare across the major banks:

Big Four Banks’ Lowest Home Loan Rates (Post-March Cash Rate Hike)

Source: Canstar.com.au. Rates are for owner-occupiers paying principal and interest. LVR requirements apply.

As you can see, there is a significant 0.45% gap between the cheapest (Westpac at 5.74%) and most expensive (NAB at 6.19%) minimum rates among the Big Four alone. That gap represents a massive opportunity for savings if you are sitting on a less competitive rate.

The Real Cost to Your Wallet: The $1 Million Loan Breakdown

According to Canstar, this single 0.25% hike adds about $91 to the monthly repayments of a typical $600,000 mortgage. But what does this mean if you have a larger loan?

If you have a $1 million mortgage on a 30-year term paying principal and interest, the real shock isn’t just the monthly increase—it is the massive amount of extra interest you will pay to the bank over the life of your loan.

Here is exactly how your repayments and total interest costs will shift:

Impact on a $1 Million Loan (30-Year Term)

Disclaimer: The figures provided in this table are estimates only, calculated using standard mathematical amortization formulas for principal and interest repayments over a 30-year term. They do not account for daily interest compounding variations, leap years, upfront or ongoing bank fees, LMI, or rate changes over the life of the loan. This information is general in nature, does not constitute financial advice, and does not take into account your personal financial situation or goals. Please speak with a licensed mortgage professional to get an exact assessment tailored to your circumstances.

Is It a Good Time to Refinance?

In short: Absolutely. Whenever the RBA hikes rates, the disparity between lenders often grows. Banks fiercely compete for new customers, sometimes offering lower rates or better features to new borrowers while letting existing customers shoulder the full weight of the rate increases. If your rate starts with a “6” (or higher), it is highly recommended to compare your loan against the market. Refinancing to a lender offering a rate in the high-5% range could effectively neutralize the cost of this latest hike.

The golden rule? Don’t stay silent. If you’re feeling the pinch, reach out to your lender immediately. Banks have a legal obligation to assist customers experiencing financial hardship, and acting early is always better than waiting for arrears to build.

The Bottom Line

With two rate hikes in just two months and the cost of living putting the squeeze on household budgets, complacency is expensive. Take ten minutes today to check your current interest rate. If your lender isn’t rewarding your loyalty with a competitive rate, it might just be time to take your business elsewhere.

Ready to Take Control of Your Home Loan?

Don’t let rate hikes dictate your financial future. Whether you want to explore refinancing options to find a more competitive rate, or you just need some guidance on managing your current repayments, we are here to help.

👉 [Book your free, no-obligation home loan health check today] 👉 [Use our free Mortgage Calculator to see how much you could save]