Glossary

    Glossary

    Comparison Rate

    A comparison rate is the legally required single figure that bundles a loan's interest rate with most of its fees, so you can compare like-for-like offers. It is not perfect, but it is a far better shopping tool than the shiny headline rate that lenders hope you will fixate on.

    Banking, Debt & Day-to-DayLast reviewed 2026-09-26

    What it is

    A comparison rate is a single percentage figure that combines a loan's advertised interest rate with most of the fees and charges attached to it, including establishment fees and ongoing monthly or annual account fees. Australian credit law requires lenders to display it alongside the headline rate in most advertising, which is why you see that little asterisk and second number in every home loan ad. For home loans, the figure is calculated on a standardised example loan of $150,000 over 25 years, so everyone is singing from the same song sheet.

    The important thing to understand is that it is an approximation, not a prophecy. It excludes costs like government charges, early exit fees, and fee waivers, and it cannot capture quirky features like offset accounts. Your actual loan will be bigger, different, or structured differently from the standard example. Moneysmart at moneysmart.gov.au recommends using it to shortlist lenders, then checking real numbers on your actual loan before you sign.

    Key takeaways

    • The comparison rate merges the interest rate and most fees into one figure, making honest same-shape comparisons possible.
    • Home loan comparison rates are standardised on a $150,000 loan over 25 years, so your real costs will differ from the quoted example.
    • It excludes government charges, early exit fees, and fee waivers, so treat it as a shortlist tool rather than the final answer.
    • Credit advertising in Australia must display the comparison rate beside the headline rate; if you cannot see it, be suspicious.
    • A one-point difference in the comparison rate on a home loan easily outweighs any flashy introductory rate theatrics.

    How it works

    Lenders take the nominal interest rate and add the effect of unavoidable fees, then express the total as one annualised percentage. Establishment fees, valuation fees, and ongoing account fees all get folded into the calculation. The formula assumes a standard loan size and term, so a $10 monthly fee looks very different on $150,000 than on your actual $750,000 mortgage. That standardisation is the whole point, because it stops lenders from hiding behind creative fee structures. Anything carefully kept outside the calculation, like conditional waivers and exit costs, remains for you to find.

    In practice, you use it as a filter, then verify the details yourself. Shortlist two or three loans with the lowest comparison rates and identical features. Then model each one on your actual borrowing amount using the loan repayments vs salary calculator at loan repayments vs salary calculator. Finally, check what each option costs over your planned timeframe, because early exit fees and offset quirks live outside the comparison rate. If two candidates land within a whisker, call both lenders and negotiate, because published rates are famously softer than they look.

    Why it matters

    Because lenders know you are easily dazzled, that is why. A headline rate of 6.10 per cent with $395 in annual fees can cost you more than a boring 6.30 per cent loan with no fees, depending on your loan size. The comparison rate is the one number the law forces lenders to show that is close to honest.

    A colleague named Brent (yes, that Brent) once chose his home loan purely on the headline rate in a glossy brochure. The loan had a $10 monthly package fee and a $600 establishment fee, which nudged the true comparison rate 0.35 points higher. Over his $600,000 loan, that little oversight cost him roughly $1,900 in the first five years. Brent now reads the asterisked fine print like it is a ransom note, and so should you.

    The stakes are bigger than a pub trivia win. One full comparison-rate point on a $600,000 loan over 25 years is worth tens of thousands of dollars. Run your shortlist through the mortgage affordability calculator before any lender gets your signature. Ten minutes of arithmetic beats a decade of overpayment.

    Real-world examples

    Example 1: The low-headline, high-fee trap on a $600,000 home loan

    Lender A advertises 6.10 per cent with a $395 annual fee; Lender B offers 6.30 per cent with no ongoing fees. On the standardised $150,000 basis, Lender A's fees push its comparison rate to about 6.45 per cent, while Lender B sits at 6.31 per cent. On your actual $600,000 loan over 25 years, Lender B saves you roughly $41 per month, which is about $12,300 across the full term. That gap buys you the very holiday the headline discount pretended to offer.

    Example 2: Why the comparison rate underestimates fees on big loans

    The comparison rate spreads a $10 monthly fee across a $150,000 example loan, which dilutes its effect. On your $500,000 refinancing mortgage, that fee bites differently relative to the interest saved at a much larger principal. So you model both loans yourself: 5.99 per cent plus $120 a year in fees versus 6.09 per cent flat. The second option actually wins, costing about $955 less over five years.

    Example 3: Two lenders, one comparison-rate point, serious money

    You are comparing two $550,000 home loans over 25 years, one with a 6.40 per cent comparison rate and one at 7.40 per cent. The monthly repayments differ by around $340, or about $4,080 a year. Held the full term, that one-point gap costs you roughly $102,000, which makes the glossy introductory discount look like pocket lint. Both scenarios belong in the mortgage affordability calculator before any signatures happen.

    Common mistakes

    Mistake: Shopping on the headline interest rate alone

    Why it bites you: A 6.10 per cent rate with $395 annual fees can cost more than a plain 6.30 per cent loan, roughly $12,000 extra over 25 years on $600,000.

    Mistake: Assuming the comparison rate covers every cost

    Why it bites you: Government charges, early exit fees, and fee waivers sit outside it; a $2,000 early exit fee can erase a year of your careful rate shopping.

    Mistake: Ignoring how loan size changes the fee impact

    Why it bites you: The standard $150,000 example dilutes fixed fees; on a $40,000 car loan, $500 in fees can add nearly a full effective percentage point.

    Mistake: Falling for introductory rates without checking the revert

    Why it bites you: A 1.5 point honeymoon discount that reverts after 12 months can leave you $8,000 worse off over five years than a steady comparison-rate winner.

    Ivy's take

    I spent two evenings researching comparison rates and lender fee schedules so you don't have to. The result is embarrassingly simple: the comparison rate is the least dishonest number in the ad. It will not tell you your exact cost, but it will expose the fee-stuffed charlatans instantly, which is ninety per cent of the job.

    My rule is to shortlist three loans with the lowest comparison rates and matching features, then model each on my real numbers. Never let a mortgage broker wave a headline rate at you like a shiny lure. If the broker cannot quote the comparison rate from memory, find a broker who can. Your future self, roughly $102,000 richer, will send thank-you cards.

    Related jargon, defined

    Headline rate
    The advertised interest rate before fees, designed by marketing departments to be the first thing you see.
    Establishment fee
    An upfront charge for setting up the loan, folded into the comparison rate calculation.
    Standardised loan example
    For home loans, the legislated $150,000 over 25 years example used to keep comparisons consistent.
    Early exit fee
    A charge for leaving a loan early, excluded from the comparison rate and capable of nasty surprises.
    ADI
    An authorised deposit-taking institution, the banks and credit unions regulated by APRA.
    Offset account
    A transaction account whose balance reduces the interest-charged portion of your linked home loan.

    Frequently asked questions

    Is the comparison rate the rate I will actually pay?+

    No. It is a standardised approximation based on a set loan size and term, and your real cost depends on your actual amount, features, and behaviour. Use it to shortlist, then model your own numbers.

    Why must lenders show a comparison rate in ads?+

    Australian credit law requires it alongside the headline rate in most credit advertising. The rule exists because lenders were hiding heavy fees behind rock-bottom headline rates.

    What costs are excluded from the comparison rate?+

    Government and statutory charges, early exit or termination fees, conditional fee waivers, and redraw fees are excluded. Features like offset accounts are also invisible to it.

    Is a bigger gap between headline and comparison rate bad?+

    Yes, a wide gap signals heavy fees baked into the product. A gap beyond about half a percentage point deserves a forensic look at the fee schedule.

    How do I check a lender's comparison rate myself?+

    Ask for the product's key facts sheet, which must state it, or find it on the lender's website. Moneysmart at moneysmart.gov.au also offers free comparison tools to sanity-check your shortlist.

    Disclaimer: This information is general in nature and does not constitute financial or legal advice. Always consult a qualified professional for your specific situation.

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    Ivy Sinclair-Wren

    Ivy Sinclair-Wren

    Financial Chaos Analyst

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    Ivy Sinclair-Wren is a Financial Chaos Analyst covering investing, AI, wealth psychology, and the emotional consequences of opening finance apps during market crashes. Based in Melbourne, she specializes in demystifying the Australian tax code and helping users navigate the intersection of spreadsheet logic and human irrationality.