A fixed rate gives you certainty, but you pay for that certainty if you leave the loan early. The cost of leaving depends mainly on your balance, the time left on the fixed term and how wholesale rates have moved since you fixed.
This article is for Wanneroo borrowers deciding whether to fix a home loan, or whether to leave a fixed rate before it ends. The aim is to help you judge the cost before you commit.
How Does a Fixed Rate Lock-In Work on a Home Loan?
A fixed rate home loan holds your interest rate, and so your repayments, for a set period. That period is usually one to five years. Whatever the cash rate does in that time, your repayment stays the same.
In return, you give up flexibility. Extra repayments are usually capped, offset accounts are limited, and ending the term early can bring break fees. At the end of the term, the loan moves to the lender's revert rate, which may be higher than rates offered to new customers. Our fixed rate expiry page explains what to check as that date approaches.
Fixed Rate Break Costs: How the Calculation Works
A break cost is the lender's estimated loss when you repay a fixed loan early. It depends on how much you owe, how long is left on the term and how far wholesale rates have moved since you fixed.
A simplified version of the formula multiplies the balance by the years remaining and by the fall in the wholesale rate. Lenders then adjust the result to a present value, so treat this as a rough guide only.
As an example, consider a Wanneroo owner with a $500,000 balance and two years left on a fixed rate of 6.75% p.a. (an illustrative rate only). They want to refinance to a variable rate that is 0.5 percentage points lower. Assume wholesale rates have fallen by 1 percentage point since they fixed.
- Rough break cost: $500,000 x 2 years x 1% = $10,000, before the present value adjustment
- Rough saving from the lower rate: $500,000 x 0.5% x 2 years = $5,000, ignoring principal repaid along the way
The break cost is about double the saving, so leaving early would lose money. The owner decides to stay fixed and gets a written break cost estimate from the lender closer to the end of the term. They then arrange a switch as the term finishes, when no break cost applies. The trade-off is that they keep paying the higher rate until then.
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Can a Fixed Rate Break Cost Be Zero?
Yes. If wholesale rates are higher than when you fixed, the break cost can be zero. The reverse also holds. Generally, the more rates have fallen since you fixed, the higher the break fee will be.
This means the same loan can carry a large cost in one year and none in another. You cannot know the figure in advance, so a lock-in is a decision about certainty, not a bet on a low exit cost.
What Protections Apply to Break Costs?
On regulated home loans, break costs must not exceed a reasonable estimate of the lender's actual loss. This sits under the National Credit Code and ASIC Regulatory Guide 220. If you think a fee was miscalculated or not disclosed upfront, you can lodge a complaint with AFCA.
Break costs are separate from other switching costs. Discharge fees are usually in the region of $200 to $300, and new lenders may charge application or valuation fees. Add all of these to your comparison before you act. Our refinancing team can total them for you.
Which Home Loan Features Are Limited on a Fixed Rate?
Fixed loans often restrict the features that help you reduce debt faster. Many have no offset account, or only a partial one. Extra repayments above a yearly cap may also trigger break costs.
This matters if you expect a bonus, a sale of another asset or a steady surplus. Money you cannot put against the loan or hold in an offset account does less work for you. If those features matter to you, a variable rate may suit better, even without the certainty of a fixed repayment. You can compare options on our home loans page.
Split Loan: Fixing Part of Your Home Loan to Limit the Exposure
A split loan divides your borrowing into a fixed portion and a variable portion. The fixed part gives repayment certainty, while the variable part keeps an offset account, extra repayments and easier refinancing.
The trade-off is that you carry both sets of limits. The fixed portion can still attract break costs, and the variable portion moves with rates. Because a break cost is based on the balance being repaid early, fixing a smaller portion also limits the amount exposed. Not every lender splits loans the same way, so ask how the split is set up and whether the offset links to the variable side.
Checking Your Break Cost Before You Sell or Refinance
Ask your lender for a written break cost estimate before you sell, refinance or make a large extra repayment. The estimate can change as wholesale rates move, and your lender will say how long the quote is valid. Ask for a fresh one close to settlement.
If you are selling, check whether the loan can be moved to your next property. Not every fixed loan is portable, and a lender may treat a sale as an early exit. Our mortgage repayment calculator can show how a different rate changes your repayments, and a loan health check can show whether your current structure still suits you.
If you want local advice, the Wanneroo mortgage broker team at Solve It Finance can walk you through your options and the costs of each. Call one of our team or book an appointment at a time that works for you.
Frequently Asked Questions
What is a break cost on a fixed rate home loan?
A break cost is the lender's estimated loss when you repay a fixed loan early. It depends on your balance, the time left on the term and how wholesale rates have moved since you fixed.
Can a break cost be zero?
Yes. If wholesale rates are higher than when you fixed, the break cost can be zero. It is usually larger when rates have fallen since you fixed.
Do variable rate loans have break costs?
No. Break costs apply to fixed rate periods. Other costs, such as discharge fees, may still apply if you switch lenders.
Can I limit my exposure to break costs?
A split loan fixes only part of your borrowing, so less of the balance is exposed to a break cost. The trade-off is that the fixed portion still has limits and the variable portion moves with rates.
