You’ve seen it in every home loan ad: a big advertised rate, then a smaller “comparison rate” next to it in brackets. Most people ignore the second number. It’s actually the more honest one, and understanding it is one of the simplest ways to avoid picking a loan that looks cheap but isn’t. Here’s how it works, and where it still falls short.
What a comparison rate actually is
The advertised interest rate tells you what you’ll pay on the loan balance. But loans also come with fees, application fees, ongoing account fees, settlement fees, and those add to the real cost. A loan with a low advertised rate but high fees can cost more than a loan with a slightly higher rate and no fees.
The comparison rate solves this by rolling the interest rate and most fees into a single percentage. It answers the question the advertised rate dodges: what does this loan really cost, all in?
Because a low rate can hide high fees, the comparison rate is often the more honest headline number. In Australia, lenders are legally required to display it alongside the advertised rate.
Why it exists
The comparison rate was introduced to stop lenders advertising artificially low rates while quietly loading up fees. Before it existed, a borrower could be lured by a headline rate and only discover the fees later.
By law, the comparison rate must be shown wherever an interest rate is advertised, calculated on a standard example so borrowers can compare loans on a like-for-like basis. It’s a genuine consumer protection, and a useful first filter.
What the comparison rate includes (and doesn’t)
Included:
- The interest rate
- Most upfront fees (application, establishment)
- Most ongoing fees (account-keeping, monthly fees)
Not included:
- Fees that can’t be predicted (e.g. late payment fees)
- Some government charges
- The value of features like offset or redraw
- Break costs on fixed loans
That last group matters. A loan with a slightly higher comparison rate but a genuinely useful offset account can save you far more than the comparison rate difference, because the comparison rate can’t capture how you’ll actually use the loan.
The catch: it’s based on a standard example
Here’s the limitation most people don’t know. The comparison rate is calculated on a standard scenario, typically a $150,000 loan over 25 years. Almost nobody in Canberra borrows just $150,000.
On a much larger loan, the impact of fixed-dollar fees is proportionally smaller, so the comparison rate can overstate the effect of fees relative to your actual loan. Two loans that look close on comparison rate at $150,000 might rank differently at $650,000. The comparison rate is a useful guide, not a precise verdict for your specific loan size.
Want the true cost comparison for your actual loan size? A 15-minute call runs the real numbers for the amount you’re borrowing, fees, features, and all, not a $150,000 textbook example.
Book a 15-min call -> · 0461 117 777
How to actually use the comparison rate
Treat it as a first filter, not the final word:
- Use it to spot fee-heavy loans, if the comparison rate is much higher than the advertised rate, the loan has significant fees.
- Don’t rely on it alone for large loans, get the real cost calculated for your actual loan size.
- Weigh features separately, offset, redraw, and flexibility aren’t in the comparison rate but can be worth more than small rate differences.
- Compare like with like, only compare comparison rates for the same loan type and term.
For the bigger picture on evaluating a loan’s true cost over time, see the true cost of refinancing.
A practical habit: whenever you see a home loan advertised, glance at the gap between the advertised rate and the comparison rate. A tiny gap means low fees; a wide gap means the loan carries significant fees that the headline rate hides. That single glance tells you more about a loan’s honesty than the big number ever will, and it takes two seconds once you know to look for it.
The bottom line
The comparison rate is the more honest number in any home loan ad, a genuine attempt to show the real cost including fees. Use it to filter out fee-heavy loans. But remember it’s built on a $150,000 example, so for a typical Canberra mortgage, it’s a starting point, not the final answer. The real comparison is the one run on your actual loan size.
If you’d like that real comparison, book a 15-minute call with Harbir.
Or call 0461 117 777 | Email info@creditstar.com.au
Frequently Asked Questions
Q1. What is a comparison rate?
Ans. A single percentage that combines a loan’s interest rate with most of its fees, giving a truer picture of the real cost than the advertised rate alone. It’s legally required in Australian home loan advertising.
Q2. What’s the difference between the interest rate and the comparison rate?
Ans. The interest rate is what you pay on the balance. The comparison rate adds in most fees, so it reflects the real all-in cost. A big gap between them signals a fee-heavy loan.
Q3. Is the comparison rate the real rate I’ll pay?
Ans. Not exactly. It’s a truer cost indicator than the advertised rate, but it’s calculated on a standard $150,000 / 25-year example, so it may not match your actual loan size precisely.
Q4. Why is the comparison rate higher than the advertised rate?
Ans. Because it includes fees the advertised rate leaves out. The larger the gap, the more fees the loan carries relative to its interest rate.
Q5. Does the comparison rate include everything?
Ans. No. It leaves out unpredictable fees (like late payment charges), some government costs, break costs, and the value of features like offset and redraw.
Q6. Why is the comparison rate based on $150,000?
Ans. It’s a legislated standard example so all loans can be compared on the same basis. Since most loans are larger, the fee impact in the comparison rate can be overstated for your actual loan.
Q7. Should I choose the loan with the lowest comparison rate?
Ans. Use it as a filter, not the sole decider. For larger loans, get the real cost calculated for your amount, and weigh features like offset separately, they aren’t in the comparison rate.
Q8. Do all lenders have to show a comparison rate?
Ans. Yes. Australian law requires the comparison rate to be displayed wherever an interest rate is advertised for a credit product like a home loan.
Q9. Can a higher comparison rate loan still be better for me?
Ans. Yes, if it has features you’ll use, like a strong offset account, the real savings can exceed the comparison rate difference. The comparison rate can’t capture how you’ll use the loan.
Q10. How do I find the true cost of a loan for my situation?
Ans. Have it calculated on your actual loan size and structure, including how you’ll use offset and extra repayments, our calculators are a starting point, and a broker can run the full comparison across multiple lenders for you.
This guide is general information only and doesn’t take into account your personal situation. Rates and fees change, confirm current figures before relying on any specific number. For advice specific to your circumstances, book a call with Harbir Hundal, Credit Representative 506564 of BLSSA Pty Ltd ACN 117 651 760, Australian Credit Licence 391237.
