---
title: Break Costs on a Fixed Rate Loan Explained | GNT Finance
description: Break costs on a fixed rate loan explained: how lenders calculate them, a $500,000 worked example, when breaking pays, alternatives and how to get a quote.
url: https://gntfinance.com.au/guides/breaking-a-fixed-rate-loan/
section: guides
updated: 2026-09-01
author: Gorakh Timilsina, GNT Finance
---

# Breaking a fixed-rate loan: how break costs work

**In short:** A break cost is the fee your lender charges if you pay out, refinance or make large extra repayments on a fixed-rate loan before the fixed term ends. It covers the lender's loss when wholesale rates have fallen since you fixed. On a $500,000 loan with two years left and a 1% rate drop, expect roughly $10,000. If rates have risen, it can be close to zero.

Fixed rates give you certainty, and the price of that certainty is a penalty for leaving early. Most Melbourne borrowers never see a break cost because they ride the term out, but if you are selling, separating, refinancing or just want out of a rate that now looks expensive, you need to understand how the number is worked out before you decide. This guide covers the formula, a worked example, the situations where breaking makes sense, and the alternatives your lender may not mention.

## What a break cost actually is

When you fix a rate, your lender locks in matching funding on the wholesale market for the same period. If you repay early, the lender still has that funding and has to re-lend the money at today's rates. If today's rates are lower than the rate they secured for you, the lender loses money, and the break cost is their way of recovering it.

Two things follow from that:

- **Break costs depend on wholesale (swap) rates, not the advertised fixed rate.** Lenders compare the wholesale rate when you fixed with the wholesale rate today for the remaining term.
- **If rates have gone up since you fixed, there is often no economic loss**, and the break cost can be zero. You usually still pay a small administration fee.

Break costs are different from the early repayment or discharge fee on a variable loan, which is a flat administration charge. Under the National Consumer Credit Protection Act, lenders may only recover a reasonable estimate of their actual loss, which is why the figure changes with the market rather than being a fixed penalty.

## How lenders calculate it

Each lender has its own formula, written into your loan contract, but they all reduce to roughly the same thing:

**Loan balance × rate differential × years remaining on the fixed term**

Where:

- **Loan balance** is the amount you are paying out early (all of it, or the amount above your extra-repayment allowance).
- **Rate differential** is the gap between the wholesale rate when you fixed and the wholesale rate now for the remaining term. It is not simply your fixed rate minus the lender's current fixed rate, though that is a useful approximation.
- **Years remaining** is how long is left on the fixed period.

Lenders then discount the result to today's value, so the real figure is usually a little lower than the simple formula. Some also adjust for the fact that your balance would have reduced over the remaining term with normal repayments.

### Worked example: a Mickleham home owner

Anjali fixed a $500,000 loan at 6.00% for three years. One year in, she wants to refinance because the same lender now offers an equivalent two-year fixed rate of 5.00% (illustration only).

| | Scenario A: rates have fallen | Scenario B: rates have risen |
|---|---|---|
| Balance being paid out | $500,000 | $500,000 |
| Fixed rate | 6.00% p.a. | 6.00% p.a. |
| Current equivalent rate | 5.00% p.a. | 6.75% p.a. |
| Rate differential | 1.00% | Negative (no loss to lender) |
| Years remaining | 2 | 2 |
| Rough break cost | $500,000 × 1% × 2 = **$10,000** | **$0** |
| Administration and discharge fees | A few hundred dollars | A few hundred dollars |
| **Total to exit** | **About $10,300** | **About $300** |

If the differential were 1.5% instead of 1%, the rough figure rises to $15,000. That is why a break cost quote can shock people who fixed near the top of a rate cycle, and why breaking is almost free for those who fixed near the bottom.

## When breaking a fixed rate makes sense

### The savings clearly exceed the cost

This is the only reason that is purely about money. Compare the break cost plus refinance fees with the interest you would save over the remaining fixed period, not over 30 years. If the new rate is only marginally lower, the numbers rarely work, because the break cost is essentially the same saving charged up front.

### You are selling the property

If you sell during the fixed term, the loan is paid out at settlement and the break cost is deducted from your sale proceeds. You cannot avoid it by selling, but you can sometimes port the loan to your next property if you are buying at the same time. Ask your lender about "loan portability" before you list.

### Separation or divorce

When a relationship ends, one party often needs to be removed from the loan, or the property has to be sold. Either can trigger a break cost. It is worth raising early with your solicitor so the cost is accounted for in the settlement between you.

### Refinancing to release equity

If you need to pull out equity for an investment property deposit or a renovation and your current lender will not lend more, refinancing during the fixed term may be the only way. In that case the break cost is part of the price of the opportunity, and you weigh it against what the equity lets you do.

## Alternatives to breaking

### Wait for expiry

The simplest option. If you have less than 12 months left, the break cost is usually small, and the saving from moving early is also small. Set a reminder three months before expiry and start comparing then. Our guide on [when to refinance](/guides/when-to-refinance/) covers the other signals worth watching.

### Use your extra-repayment allowance

Most fixed loans allow some extra repayments without penalty, typically $10,000 to $30,000 per year depending on the lender. If your aim is to pay down debt faster, this may be all you need. Model the effect on the [extra repayments calculator](/calculators/extra-repayments/). Going over the allowance triggers a partial break cost on the excess.

### Split the loan

If your loan is already split between fixed and variable portions, you can refinance or pay down the variable portion freely and leave the fixed part alone. If you are about to fix, splitting is the way to keep some flexibility, and our [fixed vs variable](/guides/fixed-vs-variable-rate/) guide weighs up both sides. The [split loan calculator](/calculators/split-loan/) helps you decide the proportions.

### Partial break

Some lenders let you break only part of the fixed amount, for example to release equity or pay a lump sum, and keep the rest fixed. The break cost is calculated on the portion you break.

### Ask your lender to reprice

If your reason for leaving is a better rate elsewhere, tell your lender. They may not waive the break cost, but some will offer a discount on your revert rate or a new fixed rate to keep you, particularly if the fixed term is near its end.

## How to get a break-cost quote

Call your lender or use their app and ask for a "fixed rate break cost quote" or "early repayment cost estimate". You will usually get it the same day, often on the spot.

Three things to know:

- **The quote is valid for that day only.** Wholesale rates move daily, so the actual cost at payout may differ. If rates are falling, expect the figure to rise.
- **Ask for it in writing.** You want the figure and the date on paper so you can compare it with the refinance savings.
- **Ask for the formula too.** Your loan contract sets it out, and it helps a broker check the quote.

Do this before you lodge any refinance application, not after. A [refinance](/services/refinancing/) that looks excellent on the rate can be a loss once the break cost is added. The [complete refinancing guide](/guides/refinancing-guide/) lists the other fees to include.

## Comparing the break cost with the saving

Put the break cost, refinance fees and the interest saving over the remaining fixed period side by side. Using Anjali's $500,000 loan with 28 years remaining and two years left on the fixed term:

| Option | Rate (illustration) | Monthly repayment | Monthly saving | Saving over 2 years | Break cost + fees | Net result over 2 years |
|---|---|---|---|---|---|---|
| Stay fixed | 6.00% | $3,076 | | | | |
| Break and refinance to variable | 5.50% | $2,920 | $156 | $3,744 | About $11,000 | **Loss of about $7,300** |
| Break and refinance to new fixed | 5.00% | $2,768 | $308 | $7,392 | About $11,000 | **Loss of about $3,600** |

Even the best case leaves her behind over the two years. Beyond the fixed period, the lower rate keeps saving money, but so would refinancing at expiry with no break cost at all. For Anjali, waiting is the better choice.

The picture changes when the break cost is small. If the same loan had six months left and a break cost of $2,500, refinancing to 5.00% would recover the cost in about eight months and then keep saving. Run your own version through the [refinance calculator](/calculators/refinance/) and adjust the costs line.

## Checklist before you break

- Written break-cost quote from your lender, dated today
- Discharge and administration fees confirmed
- New lender's application, valuation and settlement fees confirmed
- Months remaining on the fixed term
- Monthly saving at the new rate, on the same remaining term
- Saving over the remaining fixed period versus total cost
- Whether a partial break or your extra-repayment allowance would do the job instead
- Whether your current lender will reprice to keep you
- If selling: whether the loan can be ported to the next property

## Common mistakes

### Comparing the saving over 30 years

The break cost buys you the lower rate for the rest of the fixed term only. After that you could have refinanced for free. Compare over the remaining fixed period.

### Applying before getting the quote

Lodging a refinance and then discovering a $12,000 break cost wastes a credit enquiry and everyone's time.

### Treating the quote as fixed

The figure moves with the market. If a rate cut is expected, the break cost will likely rise, so decide promptly once you have the number.

### Forgetting the extra-repayment cap

Paying a $40,000 bonus into a fixed loan with a $20,000 allowance triggers a partial break cost on the excess. Put the surplus in an offset on the variable split, or hold it until expiry.

### Ignoring hardship options

If you want to break because you cannot afford the repayments, talk to your lender about hardship assistance first. You have [financial hardship rights](/legal/financial-hardship-rights/) under the credit law, and a hardship arrangement may be far cheaper than breaking the loan.

## Frequently asked questions

### What is a break cost?

A break cost, also called an early repayment cost or economic cost, is the fee a lender charges when you pay out or substantially change a fixed-rate loan before the fixed term ends. It compensates the lender for the loss it makes re-lending the funds at lower wholesale rates. It only arises when rates have fallen since you fixed. A small administration fee usually applies regardless.

### How is a break cost calculated?

Lenders compare the wholesale rate at the time you fixed with the wholesale rate today for the period remaining, multiply the difference by the balance you are repaying and the years left, then discount the result to today's value. As a rough guide: balance × rate differential × years remaining. Each lender's exact formula is in your loan contract, and the figure changes daily with the market.

### Can you pay off a fixed rate loan early?

Yes, but a break cost may apply. Most fixed loans let you make extra repayments up to an annual cap, commonly $10,000 to $30,000, without penalty. Paying beyond the cap, paying out the whole loan or refinancing before expiry triggers the break cost on the amount above the allowance. If rates have risen since you fixed, the cost may be minimal.

### Is it worth breaking a fixed rate to refinance?

Only when the interest saving over the remaining fixed period is larger than the break cost plus refinance fees. That usually means a small break cost (rates have risen or the term is nearly over) combined with a meaningful rate gap. If rates have fallen a lot since you fixed, the break cost typically cancels out the saving, and waiting for expiry is the better move.

### Do I pay break costs if I sell my house?

Yes. Selling pays out the loan, which counts as an early repayment, and any break cost is deducted from your sale proceeds at settlement. If you are buying another property at the same time, ask your lender about porting the loan to the new property, which can avoid the break cost. Get a quote before you list so you can factor it into your reserve price.

### Are break costs tax deductible?

For an owner-occupied home, no. For an investment property loan, break costs are generally treated as a borrowing expense and may be deductible, sometimes spread over several years. The treatment depends on your circumstances, so confirm with your accountant or check the [ATO website](https://www.ato.gov.au/) before you rely on it. Keep the break-cost statement from your lender for your records.

## Talk to GNT Finance

Before you break a fixed rate, let us check the quote against what the market would actually save you. We compare fixed, variable and split options across our lender panel, and there is no cost to you for our home-loan service in most cases. Our office is in [Mickleham](/mortgage-broker/mickleham/) and we work with borrowers across Melbourne and Victoria. [Book a free consultation](/contact/) or call 0426 403 703.

*This page is general information only and not legal, tax or financial advice. Laws change — confirm current rules with the State Revenue Office, the ATO or a licensed professional.*