How crypto exchanges actually make money (and what "zero fees" really means)

An exchange is a business, and understanding how it earns is the fastest way to understand the prices you're quoted. None of what follows is scandalous — matching buyers and sellers is a real service — but the revenue lines are not equally visible, and the least visible ones are where most Australians overpay without noticing.

The visible part: trading fees

The headline number every exchange advertises. Most run a maker–taker model: "takers" who fill an existing order pay slightly more than "makers" whose orders wait in the book, because makers provide the liquidity that makes the market work. Fees typically fall as your 30-day volume rises. This is the number exchanges compete on publicly — which is precisely why it's rarely where the real money is.

The quiet part: the spread

When an exchange shows you an instant "buy" price, that price sits somewhere above the market mid-point — the gap is the spread, and on simple buy/sell interfaces it routinely costs more than the stated fee. This is how "zero-fee" or "commission-free" trading works: the fee moves from the receipt into the price, where it's harder to see. It isn't hidden, exactly — it's just never on the poster. Our fee calculator compares what a trade actually costs across the platforms we review, spread included, and our $1,000 study measured the differences in dollars.

Everything else on the menu

Beyond trading, the model diversifies. Withdrawal and network-fee margins: some platforms pass on blockchain costs at cost, others add a margin. Earn and staking programmes: the platform stakes or lends your coins and keeps a cut of the yield — reasonable when disclosed, and worth reading the terms for who bears the risk. Listing arrangements: historically, projects have paid to be listed on some venues, which is worth remembering when a listing is marketed as an endorsement. Exchange tokens: several platforms issue their own coin with fee discounts attached — a whole business model in itself. And at the institutional end, market-making and custody services round it out.

How to use this as a customer

Three habits cover most of it. Compare the all-in cost — spread plus fee — never the advertised fee alone; the ranking of exchanges changes dramatically once you do. Prefer the order-book interface over the instant-buy screen on platforms that offer both; same venue, same coin, meaningfully different price. And treat unusually generous yields as a prompt to read exactly where the return comes from, because the exchange is not paying you out of kindness. None of this requires a spreadsheet — the calculator does the comparison, and our reviews score every platform on fee transparency, not just fee size.

General information only, not financial advice. How this site earns is on the same principle of disclosure: how we make money, in full.