How Marketplaces Make Money, and Why They're So Hard to Start

The take rate and what's left of it

The share a marketplace keeps from each transaction is its take rate. If buyers spend $10 million through the platform in a year and the marketplace keeps 12%, its revenue is $1.2 million.

That's before the costs that scale with every transaction. Card processing typically runs a few percent of each payment. At 3%, $300,000 of the $1.2 million goes straight to the payment processor, and the marketplace really keeps 9% of what flows through it before paying for support, fraud prevention, marketing and staff.

When a marketplace reports its gross transaction volume, that's the money that passed through it. What it earned is a fraction of that figure, sometimes a tenth.

The chicken and the egg

A two-sided marketplace is only useful to buyers if sellers are already there, and only worth joining for sellers if buyers are. On day one it has neither.

Marketplaces that got past this usually started very narrow: one city, one category, one kind of customer, small enough to make the market feel full. Some supply the first side themselves, recruiting sellers by hand or even acting as the seller. Others give one side a reason to show up alone, for example by offering scheduling software that salons would use even with no marketplace behind it, and add the buyers later.

Often one side is harder to attract, and the marketplace spends to subsidize it: discounts for early buyers, guaranteed earnings for early drivers or hosts. That spending is an investment in the thing the business is really selling, which is a market that works.

Liquidity is the product

A marketplace works when a buyer can reliably find what they want quickly and a seller can reliably sell. The share of searches that end in a purchase, or of listings that sell within a reasonable time, is what operators mean by liquidity.

A marketplace with a million listings spread across the country can be less useful than one with a thousand listings in a single city, if the buyer needs something nearby this afternoon. Growth that spreads supply thinly across too many places can make the product worse even as the numbers get bigger.

Why the winners are hard to dislodge

Each new buyer makes the platform more attractive to sellers, and each new seller makes it more attractive to buyers. That loop is a network effect, and it's why a leading marketplace can pull further ahead over time.

The loop is weaker than it looks in two common cases. When sellers can easily list on several platforms at once, a habit called multi-homing, no platform owns the supply. And when the network is local, as with ride-hailing or food delivery, a platform's size in one city does little for it in the next.

The second revenue line: paid placement

Many marketplaces eventually add advertising: sellers pay to appear higher in search results or on the home page. It looks like a separate business, but for sellers it works like a higher fee, since those who don't pay become harder to find.

From the seller's side, the real cost of selling on a platform is the listed fee plus whatever it takes to stay visible. A marketplace that advertises a 10% fee while most sellers also spend 5% of their sales on promoted listings is effectively charging 15%.

What stops a marketplace from charging more

Once a buyer and a seller have met, they can often deal directly next time and skip the fee. That disintermediation puts a ceiling on the take rate. A dog walker found through an app has every reason to hand the owner a phone number.

Marketplaces keep transactions on the platform by earning their cut on every one: handling payment, holding funds until the job is done, offering insurance, collecting reviews, settling disputes. The more a platform does per transaction, the higher a take rate it can hold. A platform that charges a lot and does little leaks.

Sellers feel the other side of that math. A seller working on a 30% gross margin who pays a 15% marketplace fee plus advertising to stay visible can be left with very little, which is why some large sellers eventually build their own channels.

Key takeaways

• A marketplace's revenue is transaction volume times its take rate, and payment processing takes part of that before anything else.
• The first buyers and sellers are the hardest to attract; most successful marketplaces start narrow and subsidize the harder side.
• Liquidity, the chance a buyer or seller finds a match quickly, is what a marketplace really sells.
• Take rates are capped by what the platform adds to each transaction; above that, buyers and sellers go around it.

Frequently asked questions

What is a typical marketplace take rate?

It varies widely with what the marketplace does. A platform that only lists items can usually charge less than one that handles payment, delivery, insurance and disputes. The rate a marketplace can hold is tied to the value it adds to each transaction.

What's the difference between a marketplace and a retailer?

A retailer buys inventory and resells it, earning the difference between its cost and its price. A marketplace never owns the goods; it charges a fee for connecting buyers and sellers. The retailer takes the inventory risk and the marketplace doesn't.

Why do marketplaces lose money for so long?

Because they spend to attract both sides before the network effects kick in, and their revenue is only a fraction of the transaction volume. Many are building liquidity city by city or category by category, and each new market has to be started from scratch.