Comparison websites present themselves as neutral tools that help you find the best deal. Most of them are not neutral. Understanding how they make money is the only way to use them without being misled.
The primary revenue model for most Australian comparison sites is the referral fee. When you click through from a comparison site to a product provider and then sign up, the comparison site receives a payment. This is called a referral fee or cost-per-acquisition fee.
These fees vary by product category. In health insurance, referral fees can range from $100 to over $400 per policy sold. In home loans, a comparison site directing you to a lender might receive an upfront commission of 0.5% to 0.65% of the loan value. On a $600,000 loan, that is $3,000 to $3,900 per referral.
The comparison site only gets paid if you sign up for a specific product. This creates a structural incentive to direct you toward providers that pay higher fees, not providers that offer you the best product.
Many comparison sites sell placement positions in their results. A product marked "Sponsored" or "Featured" has paid to appear in that position. The advertised rate or cover may be no better than alternatives, and in some cases is worse. The provider simply paid for visibility.
The problem is that sponsored placements are not always clearly labelled. When the distinction between paid placement and organic ranking is blurred, consumers can reasonably interpret the top result as the recommended or best option. It may simply be the result from the provider paying the most for that spot.
In 2019, the Australian Competition and Consumer Commission (ACCC) took action against iSelect, one of Australia's largest comparison sites. The Federal Court found that iSelect had made misleading representations to consumers about health insurance comparisons.
Specifically, the court found that iSelect's comparison tool did not compare all available policies on its panel. It showed consumers a limited set of results, often not the cheapest or most suitable for their circumstances, while telling them they were getting a comprehensive comparison. The court imposed a penalty of $8.5 million.
The ACCC's findings established that iSelect presented results in a way that steered consumers toward higher-commission products rather than products that best matched their stated needs. The court's judgment explicitly described this as misleading conduct under the Australian Consumer Law.
Most comparison sites only compare products from providers who have commercial agreements with them. If a health insurer, bank, or energy retailer does not pay to be on the panel, their products do not appear in results. A comparison site showing you "10 health insurance options" is not showing you the full market. It is showing you the 10 options where the site has a commercial relationship.
Some of the best-value products in any category come from providers who choose not to pay comparison site referral fees. This is particularly common among industry super funds, credit unions, and direct insurers who manage their acquisition costs differently.
The core problem is that the entity presenting itself as an adviser is actually a distributor. A comparison site's financial interest is served by maximising its referral fee revenue. Your financial interest is served by finding the cheapest or most appropriate product. These two interests only occasionally align.
This does not mean comparison sites are useless. They can narrow a large market down to a manageable shortlist quickly. But treating their top result as a recommendation is a mistake. They are commercial directories with financial incentives to influence the ranking.
Use multiple sites and look for consistent results across panels. Check whether any provider appears on none of the comparison sites you use, which may indicate they do not pay referral fees. Go directly to the provider's website after identifying candidates to verify the quoted price. Read the methodology disclosure, which most comparison sites now publish under their terms and conditions or in footnotes.
Ask one direct question: does this site receive a fee if I sign up? The answer will almost always be yes. That is not necessarily disqualifying, but it should calibrate how much trust you place in the ranking.
Centza's approach: transparent fee disclosure on every product we show you.
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