How to calculate breaking your fixed rate home loan

If you’re paying off more than the minimum repayments on your home loan, you may actually incur break costs fees from your bank. Here’s our guide to understanding and – ideally – minimising what you might need to pay with our break cost calculator.

On a variable loan, paying more than your minimum repayments is a good idea; you get the loan paid down quicker and lower the amount of interest you pay. However on a fixed-rate loan, making extra payments – above the limit your lender allows – can be a costly mistake.

If you pay a fixed rate home loan off early, your mortgagee is likely to charge you break costs, which can amount to thousands of dollars. Therefore it’s important to understand that fixed rate loans come with a breakage fee, and to carefully consider your options before taking out a fixed term home loan.

What are break costs?

A break cost is a penalty fee to customers who close their fixed rate loans before maturity.

Banks charge this because they borrow from the wholesale money markets to fund the loan that they provide you, and do not have the option of paying this off early.

By closing your loan before the end of its term, you breach the contract that you set with the lender. As they need to keep servicing their loan without your scheduled payments, they incur costs that they seek compensation for.

Before entering a fixed rate loan agreement, it is worth finding out how the lender calculates break costs and what these are likely to amount to. There is always a chance you may need to exit your loan early, so it’s important be informed on this before you enter your loan agreement

Why do you pay break costs?

Bill Swap Rate (BBSR) to borrow money from a wholesale market to provide your loan. This BBSR does not allow early repayment.

If you start making more payments, you throw the BBSR off balance. If the BBSR falls between the time you took out the loan and the date when you paid it off, the bank incurs a cost. The lender will then pass this cost on to you as a break cost.

You will incur a break cost if you pay off the fixed rate loan early, or you pay off more than your agreement allows. (Many loan providers will allow you to make some additional payments – this is an attractive loan feature to many).

You may also face break costs if you default on the loan and it becomes payable immediately, or if you refinance your loan.

Break cost calculator:

Each bank uses a different formula to work out its break costs, so it’s worth finding out how your lender calculates this fee.

Here is a break cost calculator:

Break cost = loan x interest rate change x time left on the loan

To demonstrate this, imagine a customer has a five-year fixed rate loan paying a 5% interest rate, and decides to sell the property in year 3 when the balance is $400,000 and rates have
reduced by 2%.

In this case, the customer will need to repay the final two years of the loan in full, incurring a break cost as interest
have dropped. Therefore their break cost would amount to:

Break Cost = $400,000 x 2% (0.02) x 2 years

This results in a break cost of $8,000.

Generally the longer the time left on the loan, the higher the penalty fees tend to be. So it’s worth keeping this in mind when choosing a fixed rate loan term.

How can I avoid paying break costs?

If you have a fixed rate home loan, you can’t always avoid break costs; life happens and you may need to refinance your loan or sell your house under unexpected circumstances, which can result in paying off your existing mortgage early.

You can, however, manage break costs and be informed. A break cost calculator can help you calculate how much you’ll pay. Some
will tell you what their limits are. Speak to the lender to find out more.

Also, bear in mind that banks may change their policies. Stay on top of this to make sure you don’t get bitten with a fee you weren’t expecting. Also don’t get caught out by lenders giving other names to their break costs. Any fee that has the phrase ‘early repayment’ attached to it is probably a break cost.

A good option may be avoiding fixed rate loans altogether. A variable rate home loan can offer more flexibility. Alternatively, you can take out a flexible fixed rate loan to get the best of both worlds. You may be able to switch and save.

When should I pay a break cost?

your home loan to a lower interest rate or to a product with better features. It may make sense to carry a cost in the short term that will enable you to save more over the long term and pay off your mortgage sooner.

Speak to
expert broker to find out more and help you figure out a strategy for your particular situation.

5 stars for our service reviews from clients

Book Call Now

UNO home loans

Try Plans, by UNO
Mortgage calculators completely reimagined
Get Started
Orange square icon with a black network-like symbol and the words 'Good' in green twice and 'Bad' in red in the bottom right corner on a white background.ANZ logo next to the words 'Possibly' in orange and 'Good' twice in green on a white background.White rectangular shape with rounded, scalloped corners on a transparent background.Logo with blue and purple geometric shield shape on left and three green words 'Good' arranged in a triangular layout on right.A dark blue letter Q with a red and turquoise diagonal arrow inside it, followed by the word 'Possibly' in orange, and the word 'Good' twice in green font on the right side.White rectangular shape with rounded, scalloped corners on a transparent background.Macquarie Bank logo on the left with the word 'Possibly' in orange and 'Good' written twice in green on the right.Suncorp Bank logo with the word Good repeated three times in green text on a white background.Yellow diamond shape with a black folded corner followed by the word 'Good' repeated three times in green text on a white background.
Considering a purchase or refinance?

Try Plans by UNO

Mortgage calculators completely reimagined
Get Started
☎️ 🚫 No cold call promise
Orange square icon with a black network-like symbol and the words 'Good' in green twice and 'Bad' in red in the bottom right corner on a white background.ANZ logo next to the words 'Possibly' in orange and 'Good' twice in green on a white background.White rectangular shape with rounded, scalloped corners on a transparent background.Logo with blue and purple geometric shield shape on left and three green words 'Good' arranged in a triangular layout on right.A dark blue letter Q with a red and turquoise diagonal arrow inside it, followed by the word 'Possibly' in orange, and the word 'Good' twice in green font on the right side.White rectangular shape with rounded, scalloped corners on a transparent background.Macquarie Bank logo on the left with the word 'Possibly' in orange and 'Good' written twice in green on the right.Suncorp Bank logo with the word Good repeated three times in green text on a white background.Yellow diamond shape with a black folded corner followed by the word 'Good' repeated three times in green text on a white background.

Related Articles

TESTIMONIALS

What our customers are saying

Symone Macleod
April 28, 2026
5 stars for our service reviews from clients
Paul and his team were amazing. We were new to Australia from NZ and he was so helpful and we got into our own house with ease. Thanks Paul - would highly recommend
Read more
Luke Sandy
April 22, 2026
5 stars for our service reviews from clients
Couldn’t recommend Mike Parsons highly enough. He’s a great communicator who guided us through every stage of the application and made the whole process feel easy.
Read more
Sarah M
April 21, 2026
5 stars for our service reviews from clients
I cannot recommend Jessica Southerwood enough. She made the experience of purchasing my first home not only smooth and stress free, but genuinely exciting and special. From start to finish, her professionalism, reassurance, and attention to detail made what could have been an overwhelming process feel so enjoyable. She has been an incredible support every step of the way, always available to answer questions, explain the process clearly, and provide guidance with such warmth and care. Her positivity and encouragement truly made a difference, and she was a genuine ray of sunshine throughout the entire journey.
Read more
Mitch Crosher
April 20, 2026
5 stars for our service reviews from clients
Mike at UNO did an outstanding job sorting out my home loan. He went above and beyond for me and would recommend for an easy experience! This is the second time I have used UNO and wouldn’t go anywhere else!
Read more
Robbie Smith
April 20, 2026
5 stars for our service reviews from clients
We were involved with Jess and UNO homes loans on a recent property sale. Jess communicated well and was excellent to work with. If you are looking for a broker I would highly recommend her. She is super proactive
Read more
Samand Sabohian
April 13, 2026
5 stars for our service reviews from clients
Nick was an absolute pleasure to work with from start to finish. From our very first interaction, he demonstrated a high level of professionalism, responsiveness, and genuine care. He took the time to clearly explain each step of the process, ensuring I always felt informed and comfortable with every decision being made What really stood out was his depth of knowledge and attention to detail. No question was ever too small, and he was always available to provide guidance and reassurance whenever needed. His ability to navigate any challenges that arose with ease and confidence made the entire experience feel seamless and stress-free Nick truly goes above and beyond for his clients, and it shows in the quality of his work and the level of service he provides. I felt fully supported throughout the entire journey and couldn’t have asked for a better experience. I would highly recommend his services to anyone looking for someone reliable, knowledgeable, and genuinely invested in achieving the best outcome for their clients
Read more
H Fayyaz
April 10, 2026
5 stars for our service reviews from clients
We couldn’t be happier with the support Nick provided in helping us finalise both our car finance and business loan. He made the entire process seamless and took a lot of the pressure off us. Nick was thorough, proactive, and always one step ahead, ensuring everything was handled efficiently and without delays. He broke things down in a way that was easy to understand and made sure we were comfortable every step of the way. What really stood out was his dedication and commitment to getting things across the line smoothly. It’s rare to find someone who genuinely cares about the outcome as much as he does. Exceptional service from start to finish, highly recommended!!
Read more
Hassan Fayyaz
April 10, 2026
5 stars for our service reviews from clients
We had an outstanding experience working with Nick to settle both our car loans and business loan. From start to finish, he was professional, knowledgeable, and incredibly efficient. Nick took the time to understand our situation, explained everything clearly, and ensured the entire process was smooth and stress-free. His attention to detail and commitment to getting the best outcome for us really stood out. What we appreciated most was his responsiveness and genuine willingness to go above and beyond to make things happen. It’s not often you come across someone so reliable and easy to deal with. Highly recommend Nick to anyone looking for finance solutions, truly a 5-star service!
Read more
Joel Painter
April 8, 2026
5 stars for our service reviews from clients
Paul was an amazing broker to deal with. He went above and beyond to get the result we were all aiming for. Cant recommend enough.
Read more
Rebecca David
April 2, 2026
5 stars for our service reviews from clients
I can’t recommend my mortgage broker Jessica Southerwood and the UNO team highly enough. From start to finish, they made what felt like an overwhelming process so much easier for me. They took the time to truly understand my situation and worked tirelessly to refinance my Investment home loan and consolidate debts into a structure that actually works for me and my family. Not only did they secure us a great rate, but they also gave us clarity, confidence, and a clear path forward with our finances. Their communication was outstanding throughout and always available to answer questions and explain things in a way that made sense. Thanks to their expertise and dedication, I am now in a much stronger financial position and can focus on what matters most for our family. If you’re looking for someone who genuinely cares and delivers results, I wouldn’t hesitate to recommend Jess and the UNO team. Thanks again.
Read more
Laura
March 31, 2026
5 stars for our service reviews from clients
After owning my property for a few years undertaking substantial house renovations I found myself in a situation where I had run out of cash to finish due to rising building costs at the time. I wanted to refinance to free up equity from my home to ultimately finish my house renovations and give me an extra cash buffer. I honestly thought it would be out of reach for me and the sole home owner and was going to be pretty much impossible. However, Mike Parsons from Uno Home Loans found a way to make it happen. He was incredibly thorough and really took the time to explore every option instead of just going with the obvious ones, which made a huge difference to me in the end. Not only that, he also kept me in the loop the whole way through— always checking in, explaining things clearly, what the next steps would and generally made the whole process feel way less stressful than I expected. Thanks to Mike, I was able to free up equity when I didn’t think it was on the cards at all. This has since allowed me to complete some more home improvements which is not only a great feeling but has added more value to my home and my living situation in general. On top of that it has also provided me the extra comfort of having additional cash to support rising monthly living costs. If you want someone who genuinely cares and will go the extra mile to get you a result, then Mike Parsons is your man! I cannot recommend him enough!
Read more
Bryan Custodio
March 30, 2026
5 stars for our service reviews from clients
Complex self-employed deal done incredibly fast. I’m a commercial finance broker myself and have dealt with a lot of brokers. Scott is easily the best I’ve come across. My situation involved multiple businesses and low documentation, which is usually where things get messy, slow, and dragged out. Scott handled it seamlessly. He knew exactly how to structure everything from the start and was clear on what would be needed at each stage, which meant no unnecessary back and forth with the lender. The whole process was smooth, efficient, and far quicker than I expected given the complexity. If you’re self-employed and want someone who actually understands how to get these deals approved without the usual headaches, I’d strongly recommend reaching out to him.
Read more