A break cost is what a lender charges to recover the interest margin it loses when you exit a fixed rate loan early. It depends on how much time is left on your fixed term, the size of your loan, and how wholesale interest rates have moved since you fixed. The fee can be close to zero or run into tens of thousands of dollars. Always ask your lender for an exact payout figure before you decide.
What is a fixed rate break cost?
When you fix your home loan rate, you agree to a set interest rate for a set period, say two, three or five years. The lender locks in funding at a matching wholesale rate to cover that promise. If you pay out the loan early, whether through refinancing, selling the property, or making extra lump sum repayments beyond what your contract allows, the lender can lose money on that funding arrangement. A break cost, also called an economic cost, is how the lender recovers that loss.
It is not a penalty in the punitive sense. It is meant to put the lender back in the position they would have been in if you had stuck to the fixed term. That is why the amount varies so much from one borrower to the next. It depends on market movements the lender has no control over, and no say in.
How do lenders calculate break costs?
Most Australian lenders use a version of the same method. They compare the wholesale swap rate at the time you fixed with the wholesale swap rate for the remaining term today. If wholesale rates have fallen since you fixed, the lender now has to relend your money at a lower rate than it costs them to fund it. That gap becomes your break cost.
A rough version of the formula:
Loan balance x rate difference x remaining term (in years) = approximate break cost
Worked example (a simplified illustration only). Say you have $500,000 remaining on a fixed loan, with two years left on the fixed term. You fixed at 6.5%, and the wholesale rate for a two year term has since dropped by 1%.
$500,000 x 1% x 2 years = roughly $10,000
That is a simplified version of the sums lenders actually run. Real calculations factor in compounding, the lender's cost of funds, and administrative adjustments. Two lenders with the same loan size and timing can land on different figures for the same borrower. Use this example to understand the shape of the calculation, not to predict your own number.
When are break costs near zero?
Break costs shrink or disappear when wholesale rates have risen since you fixed, or stayed roughly flat. If you fixed at 4% and wholesale rates for your remaining term are now 5.5%, the lender can relend your funds at a better rate than they are paying you. There is no loss to recover, so the break cost is often zero, or a small administration fee only.
This is common after a run of rate rises. If you fixed some years back and rates have moved up since, it is worth checking your position. You might be able to exit a fixed loan with little to lose, even before the term ends. Understanding fixed versus variable structures helps make sense of why this swings so much either way.
When is it worth paying the break fee?
Run the numbers before you commit. Add up the break cost, any discharge fees, and new loan establishment costs, then compare that total against what you would save by moving to a lower rate or a more suitable structure over the time you plan to keep the new loan.
If the break cost is $8,000 and the new loan saves you $150 a month, it takes over four years to break even. If you are likely to sell, refinance again, or pay off the loan within that time, breaking early may not be worth it. If you plan to stay put for the long haul and the ongoing savings are solid, paying the fee can still leave you ahead.
It also matters if you are weighing up a cashback offer or switching to a variable rate for flexibility. Weigh the one off cost against the ongoing benefit, not just the headline saving.
How do I find out my exact break cost?
Only your lender can give you the real figure. It moves daily with wholesale rates, so an estimate from a few weeks ago is not reliable. Call your lender and ask for a formal break cost quote or full payout figure. Most will provide one in writing, and it is usually only valid for a short window, often a matter of days, before it needs to be recalculated.
Ask for the full payout amount, not just the break cost on its own. That should include any remaining fees, discharge costs, and the loan balance itself, so you see the true cost of exiting today.
Break cost scenarios at a glance
| Rate movement since you fixed | Likely break cost | |---|---| | Rates rose | Low or zero | | Rates stayed roughly flat | Small to moderate | | Rates fell | Moderate to high |
This is a general guide, not a quote. Your own figure depends on your lender, your remaining term, and the wholesale market on the day you ask.
If you are weighing up a move, start by comparing what is on offer through refinance or run a quick rate check against your current loan before you ring your lender for a payout figure.
Break cost formulas differ between lenders and change daily with wholesale rates. This guide explains the general method only. Only your lender can quote the actual break cost that applies to your loan, and any figure they give is usually valid for a short time only.
Fixed term ending or thinking of breaking early? Book a call with Tom Smith at Kookaburra Finance, Springfield Central. We're FBAA members, accredited with 60+ lenders, and there's no cost to you. Get in touch.