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National16 March 2026Market Analysis

When Should You Refinance Your Home Loan?

Know the right time to refinance your mortgage. This guide covers rate triggers, break-even analysis, and the signs your current loan is costing you money.

Refinancing isn't just about chasing the lowest rate — it's about timing, costs, and strategy. Done right, switching your home loan can save tens of thousands over the life of the loan. Done poorly, exit fees and setup costs can wipe out any benefit.

This guide helps you identify exactly when refinancing makes financial sense, what triggers should prompt a review, and how to calculate whether the numbers stack up in the current March 2026 rate environment.

  • The 0.50% rule of thumb: If your current rate is 0.50% or more above what's available, refinancing almost always pays off within 12 months. With competitive rates from 5.99% p.a. in March 2026, many borrowers on rates above 6.50% have a clear case to switch.
  • Fixed rate expiry: When your fixed-rate period ends, you'll typically revert to a higher variable rate (often 1–2% above the original fixed rate). This "rate cliff" is one of the strongest triggers to refinance immediately.
  • Changed circumstances: Pay rise, relationship change, property value increase — these all shift your borrowing profile. If your LVR has dropped below 80% through repayments or price growth, you may qualify for significantly better rates without LMI.
  • Loyalty tax: Australian lenders consistently offer better rates to new customers than existing ones. ASIC's "loyalty tax" research found existing customers pay 0.30–0.40% more on average. Refinancing resets this.
  • When NOT to refinance: If you're within 2 years of a fixed-rate term (break costs can be enormous), if your property has decreased in value (higher LVR = worse rates), or if you plan to sell within 12 months (savings won't offset costs).

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The refinance break-even calculation is straightforward. Here's an example for March 2026:

Scenario: $600,000 loan balance, current rate 6.79%, available rate 5.99%

ItemAmount
Annual interest saving (0.80% × $600k)$4,800/year
Monthly saving$400/month
Typical refinance costs (discharge + setup)$600–$1,500
Break-even period2–4 months

Most refinances with a 0.50%+ rate reduction pay for themselves within 3–6 months. Over the remaining loan term, this scenario saves over $70,000 in total interest.

  1. Check your current rate — Log into your lender's portal or call them. Compare it against the market — if you're paying more than 6.50% variable in March 2026, you're likely overpaying.
  2. Calculate your break-even — Add up switching costs (discharge fee ~$350, new lender setup ~$300, government fees ~$200) and divide by your monthly saving. If break-even is under 12 months, proceed.
  3. Review your fixed-rate status — If you're on a fixed rate, check your contract for break costs. These can run into thousands of dollars and may negate any benefit.
  4. Get a property valuation estimate — Your current LVR affects the rate you qualify for. Use online tools or ask a broker for a desktop valuation to understand your position.
  5. Speak with a broker — A broker can access 30+ lenders and negotiate on your behalf. They'll handle the paperwork and ensure the transition is seamless.

Refinancing is one of the most powerful financial levers available to homeowners, yet many Australians stay on uncompetitive rates simply because they don't review their loan regularly. A good rule: review your home loan at least once a year, and always when your fixed rate expires.

In the current rate environment, even small rate reductions translate to substantial lifetime savings. Don't let inertia cost you tens of thousands.