Refinancing Break Costs: When Breaking a Fixed Rate Is Worth It

By Jason Given · 2026-08-16 · 7 min read

What are break costs?

A break cost is a fee charged by your lender when you exit a fixed rate loan before the fixed term expires. It compensates the lender for the interest they expected to earn over the remaining fixed period - money they had effectively locked in when they funded your loan at that rate.

Break costs only apply to fixed rate loans. If you are on a variable rate, there are no break costs - just standard discharge fees of $200-$500. This is one of the key trade-offs when choosing between fixed and variable: a fixed rate gives you certainty, but it comes with a cost if you want to leave early.

The size of the break cost depends on two things: how much rates have moved since you fixed, and how long you have left on the fixed term. In practice, break costs can range from $0 to $20,000 or more. That is a wide range, which is why getting the exact figure from your lender before making any decision is essential.

How break costs are calculated

The formula is straightforward: remaining loan balance x (your fixed rate - current wholesale rate for the remaining term) x remaining term in years. The wholesale rate is the rate lenders use to fund fixed rate loans - it is not the same as the variable rate you see advertised.

Here is how it works in practice:

The key insight: if rates have risen since you fixed, your break cost is likely zero or minimal. If rates have dropped, break costs will be significant. This is because the lender can re-lend the money at a higher rate when rates rise (so they are not losing out), but they lose money when rates fall and they have to release you from a higher-rate contract.

When the savings justify the break cost

The decision is purely mathematical: does the interest saving over the remaining loan term exceed the break cost? Most people only look at the fixed period, but the real saving continues well beyond it.

Lendology calculates the break-even point and the total saving over 1, 3, and 5 years. We factor in every cost - not just the break cost, but discharge fees, application fees, and government charges - so you see the true net position before making a decision.

When breaking does NOT make sense

There are situations where breaking a fixed rate is clearly not worth it:

• ✗Less than 3-6 months remaining on the fixed term. The savings from switching early are minimal. Just wait it out and refinance when the fixed term expires - you will avoid the break cost entirely.
• ✗Break costs exceed 2 years of interest savings. If it takes more than 2 years to recoup the break cost through lower repayments, the payback period is too long. A lot can change in 2 years - rates, your circumstances, even your property plans.
• ✗You are planning to sell the property within 12 months. If you are selling soon, you will not have enough time to recoup the break cost through monthly savings. Wait until settlement and discharge the loan then.
• ✗Your serviceability has changed. If your income has dropped, you have taken on new debts, or your circumstances have changed significantly, you may not qualify with a new lender. There is no point paying a break cost if you cannot secure a better deal on the other side.

Other costs when refinancing from a fixed rate

Break costs get the most attention, but they are not the only expense. Here is the full picture of what refinancing from a fixed rate costs:

• •Discharge fee from current lender: $200-$500. This is charged by every lender when you close a home loan, whether fixed or variable.
• •Application fee with new lender: $0-$600. Many lenders waive this for refinancing, especially when arranged through a broker.
• •Valuation fee: $0-$300. Most lenders cover this cost for standard residential properties.
• •Government registration fees: $200-$400. These cover the mortgage discharge and new mortgage registration with the state land titles office.

Total switching costs (excluding break cost): typically $400-$1,200. Lendology factors every cost into the comparison so you see the true net saving - not just the headline rate difference.

Alternatives to breaking your fixed rate

If the numbers do not stack up for breaking your fixed rate right now, there are other options worth considering:

• 1.Ask your current lender for a rate reduction. They may match or beat competitor rates to retain you, especially near the end of the fixed term. This costs nothing to try, and Lendology can negotiate on your behalf with a competing offer in hand.
• 2.Split your next fixed period. When your current fixed term expires, fix a portion and leave the rest variable. This gives you flexibility to refinance the variable portion without break costs, while still locking in some rate certainty.
• 3.Wait for the fixed term to expire. If it is within 3-6 months, the interest saving from waiting is usually smaller than the break cost. Set a reminder and start the refinancing conversation 6-8 weeks before expiry so everything is ready to switch on day one.
• 4.Make extra repayments to the annual limit. Most fixed rate loans allow additional repayments of $10,000-$20,000 per year without penalty. This reduces the balance before the fixed term expires, lowering any future break cost and saving you interest in the meantime.