Explaining comparison rates

Why do lenders have to offer comparison rates for their home loans? Let’s untangle the legalities so you understand what a comparison rate is and why you should expect one from your lender.

Getting the right home loan is tough enough without being deceived about how much it will actually cost you over 25 or 30 years. That’s why lenders are forced to provide comparison rates whenever they advertise their home loan products. The comparison rate helps you identify the true cost of your home loan. In one percentage figure, you can get a guide to what you’ll be paying – taking into account the headline interest rate and many of the fees and charges associated with the loan. This allows you, in theory anyway, to compare loans from different lenders. Understanding comparison rates is important for borrowers because they help prevent lenders displaying misleading “advertised” rates. They also ensure borrowers can see any costs that lenders may have once tried to hide. Even so, many borrowers don’t get to see the truest comparison rate when they’re looking for their ideal home loan. At UNO, we want to demystify comparison rates so you know exactly what you’re looking at … and how to get the best deal.

How do comparison rates work?

Since July 2003, lenders have had a legal obligation to display the comparison rate on every home loan product they advertise. By expressing the “true cost” of a loan in a single percentage figure – taking into account the interest rate and most fees and charges – borrowers have a better idea of how much the lending arrangement will impact on their finances over the length of the loan. This prevents lenders from advertising seemingly cheap rates that come with hidden costs. As such, the rate prevents you taking out a loan that you may not be able to afford. On a more basic level, a comparison rate can help you compare home loans more accurately. But there’s a major limitation: comparison rates are based on a formula that only compares principal-and-interest loans for $150,000 over 25 years. If your loan doesn’t exactly fit this formula – and, well, it’s not likely to – the actual amount you pay will be quite different. As we said, it’s only to be used as a guide … not as gospel.

How do lenders arrive at a comparison rate?

The comparison rate brings together the value of the loan, its interest rate and any other fees that may apply to the loan. As mentioned, it is only calculated on a 25-year, $150,000 loan. This generates a percentage figure you can use to try to compare one loan against others. There are four factors that go into creating the comparison rate:

  • Headline interest rate – what the lender is offering in the deal.
  • Repayment frequency – how often you’re asked to service the loan.
  • Fees – costs such as annual fees, establishment fees, valuation fee, mortgage documentation fees, settlement fees and account-keeping fees.
  • Loan type – whether the loan is fixed or variable, and if there is an interest-only period, for example. The Australian Securities and Investments Commission administers the comparison rate formula under the federal National Credit Code.

What isn’t included when assessing the comparison rate?

Some factors aren’t built into the comparison rate. These are likely to include:

  • Stamp duty – this government charge varies from state to state. You can use our stamp duty calculator to find out how much you need to pay. Also, some states have programs in place that could help you avoid stamp duty, so speak to an adviser to find out if you’re eligible.
  • Some fees and charges – costs such as early termination fees or redraw fees during a fixed-loan period, for example.
  • Lenders Mortgage Insurance (LMI) – lenders usually apply LMI to any home loan that is worth 80% or more of the property’s value. The comparison rate assumes the loan is for 80% or less of the property’s value.
  • Any other legal fees or charges – you’ll usually need to hire a solicitor or conveyancer to complete your home purchase. These fees aren’t part of the comparison rate because they are outside the lender’s control. Each of these factors needs to be considered in conjunction with the comparison rate. All can affect your borrowing power and how much you will spend to take out a loan.

The difference between comparison rates and interest rates

Don’t make the mistake of thinking the comparison rate and interest rate are one and the same. The interest rate is just the percentage of the loan that you need to pay on top of the actual loan amount (the principal). The comparison rate stretches further. It incorporates the interest rate and several other fees to create a more accurate indication of the loan’s true cost.

Loans without comparison rates

Some home loan products don’t have comparison rates, although you will only come across these in special circumstances. A loan won’t have a comparison rate if it isn’t regulated under the National Consumer Credit Protection Act (NCCP). Very few lenders offer these types of loans, and borrowers should try to avoid them. Lenders might not use comparison rates for no-doc loans and business loans.

Other ways to compare loans

The comparison rate is a useful tool but it’s not perfect. Because it’s set at a specific loan size and term and doesn’t include several important fees it isn’t entirely accurate. It’s to be used as a guide only. The simple fact is that comparison rates don’t take your personal situation into account. You’ll find that the length of the loan and the amount you want to borrow will change the true cost of your loan, and the comparison rate formula isn’t equipped to deal with this. The best idea is to Book in a quick call with our customer care team at UNO. We can help you compare home loans so you’ll find the best deal.

Useful comparison rate tips

So, what else can you do to figure out how your home loan will impact on your finances over the long term? Here are some useful tips:

  • Consider all costs associated with the loan, from those built into the comparison rate through to those your lender has no say in.
  • Alter the rate depending on your loan term, rather than the 25-year standard term used in the comparison rate.
  • Keep your own goals in mind to find a loan that meets your needs.
  • Check the external factors that could affect your borrowing power, such as the type of loan and any added features.

What to do next

The comparison rate offers you a better idea of the real cost of your home loan, but there’s more you can do: Book in a quick call with our customer care team with us at UNO
Have a chat with a UNO expert This information is general in nature, and you should always seek professional advice when making financial decisions. This information in this article is general only and does not take into account your individual circumstances. It should not be relied upon to make any financial decisions. UNO can’t make a recommendation until we complete an assessment of your requirements and objectives and your financial position. Interest rates, and other product information included in this article, are subject to change at any time at the complete discretion of each lender. Book a call in with UNO

5 stars for our service reviews from clients

Book Call Now

UNO home loans

Try Plans, by UNO
Mortgage calculators completely reimagined
Get Started
Considering a purchase or refinance?

Try Plans by UNO

Mortgage calculators completely reimagined
Get Started
☎️ 🚫 No cold call promise

Related Articles

TESTIMONIALS

What our customers are saying

Alice V
December 5, 2025
5 stars for our service reviews from clients
great experience - very supported throughout the whole mortgage arrangement process
Read more
Cassie Ninness
December 1, 2025
5 stars for our service reviews from clients
Jake was fantastic when refinancing our home loan. The whole process was made so easy by Jake who had a lot of knowledge, was attentive and kept us well informed through the whole process. Such an easy and positive experience and I would recommend him and his services to anyone.
Read more
Kobe Ferguson
November 29, 2025
5 stars for our service reviews from clients
I had the absolute pleasure of working with Jake de Ruyter on our home loan application, and I couldn’t recommend him highly enough to anyone looking to finance a new home. From his lightning-fast response times to his extensive knowledge across every stage of the process, Jake has been a breath of fresh air during what can be a very stressful period. He made sure we understood each step clearly and took the time to explain anything we weren’t familiar with in a way that genuinely made sense. Jake went above and beyond to find the best option for our specific situation, and his dedication has truly set him apart. We will absolutely be using Jake for all future finance needs. Highly recommended
Read more
Riley Nicoll
November 29, 2025
5 stars for our service reviews from clients
My partner and I have just bought our first home and Jake de Ruyter helped us arrange our finance. Jake was an absolute pleasure to deal with. He made the process smooth, stress-free, and straight-forward. He displayed professionalism and open communication throughout the process and was quick to act on every piece of correspondence. We are so happy and will 100% be doing all our future finance through Jake.
Read more
Chris Whiteman
November 29, 2025
5 stars for our service reviews from clients
We chose Paul as our mortgage broker because, as fellow Kiwis, we wanted someone who truly understood us and how we work - and we’re so glad we did. His communication was exceptional from start to finish, always quick to respond (even to our many questions!) and incredibly clear throughout the entire process. Paul secured our loan super quickly and guided us through each step with confidence and ease. Buying a home in Australia can feel overwhelming, but he made everything feel straight forward and stress-free. We would recommend Paul all day long to anyone looking to purchase a home in Australia, and we will absolutely use him again when the time comes. Thank you, Paul - you’ve been amazing.
Read more
Josh Rochford
November 28, 2025
5 stars for our service reviews from clients
Paul and the Team and UNO were fantastic. Very informative and extremely efficient.Highly recommend. Thanks again Paul
Read more
Kealan Kelly
November 27, 2025
5 stars for our service reviews from clients
Mike and team were an absolute pleasure to work with. Super friendly and professional throughout and got us excellent rates
Read more
W S Lam Wong
November 27, 2025
5 stars for our service reviews from clients
When seeking for a loan for my unconventional lending requirements (via a trading trust), none of the Big 4 nor regular brokers could help. I'm glad I found Jesse who has a thorough understanding of my requirements and it has been a pleasant and seamless experience to have my loan organised by Jesse until settlement. A well deserved 5 stars review from me!!!
Read more
Haylee Hollings
November 26, 2025
5 stars for our service reviews from clients
Paul was amazing from the first phone call, he knew what we needed to know before we had even thought about it.. He and his team had us feeling at ease moving from Another country knowing he had us sorted and under control and in good hands. Paul will be our go to for other financial needs in the near future! Thanks again Paul and the team! Thankful kiwis!
Read more
Claire Blackall
November 26, 2025
5 stars for our service reviews from clients
Highly Recommend Paul Davey – Exceptional Mortgage Broker We worked with Paul Davey on a very complex mortgage application, and we honestly couldn’t have asked for a better broker. Paul worked incredibly hard for us from start to finish — he was patient, knowledgeable, and relentless in finding solutions when things got complicated. His communication was outstanding, always keeping us updated and making sure we understood every step of the process. It’s clear he truly cares about his clients and goes above and beyond to achieve the best outcome. We’re extremely grateful for everything Paul did for us and would recommend him without hesitation to anyone looking for a dedicated and trustworthy mortgage broker.
Read more
H Hollings
November 26, 2025
5 stars for our service reviews from clients
Paul is absolutely fantastic, he is absolutely worth reaching out to! He explains things in ways you can understand and help you get or work towards what you are wanting to achieve. You won’t regret reaching out to him and his team at all!
Read more
Owen
November 26, 2025
5 stars for our service reviews from clients
Paul and the team at UNO are excellent, very responsive with sound knowledge, highly recommend.
Read more