Spot vs futures fees: why one costs five times the other

Look at any exchange's fee page and the gap jumps out: 0.100% on spot, 0.020% on futures. Five times cheaper, apparently, for trading the same asset. That reading is wrong in a way that costs people real money, and the reason is worth two minutes.

The fees are charged on different things

A spot fee is charged on the value of the asset you buy. Spend 10,000 USDT on BTC at 0.100% and you pay 10 USDT.

A futures fee is charged on the notional value of the position, not on the margin you posted. Open a 10,000 USDT position at 0.055% taker and you pay 5.50 USDT — but if you opened that position with 10x leverage, you only put up 1,000 USDT of your own capital.

Relative to the money you actually committed, that 0.055% is 0.55%. The leverage that magnifies your returns magnifies your fee burden by exactly the same factor. This is the part the fee table does not tell you.

So the honest comparison is: futures fees are lower per unit of exposure, and identical per unit of exposure to what leverage does to everything else. A 20x position pays twenty times the fee, as a share of your capital, that an unleveraged one would.

What each market actually charges

The pattern holds across every venue: spot taker rates cluster at 0.100%, futures taker rates cluster between 0.040% and 0.060%. MEXC's zero spot maker fee is the one genuine outlier.

You pay twice, both times

Whichever market you are in, a completed round trip costs two fees: one to open, one to close. A 20,000 USDT futures position at 0.055% taker on both sides costs 22 USDT to open and close, not 11.

This sounds obvious and is routinely forgotten in mental arithmetic. Three round trips a day, five days a week, is 30 fee events a week. At 11 USDT each that is 330 USDT a week and roughly 17,000 USDT a year, on an account that might only hold a few thousand.

The cost futures has that spot does not

Perpetual futures charge a funding rate, typically every eight hours, paid between long and short holders to keep the contract price tethered to spot. It is not an exchange fee — it goes to the other side of the market, not to the venue — but it comes out of the same account.

Funding is usually small, on the order of 0.01% per interval, and in normal conditions it roughly cancels out over time. In a strongly trending market it does not. A long position held through a sustained rally can pay funding three times a day for weeks, and that cost can easily exceed everything you paid in trading fees.

If you hold positions for days rather than hours, model funding before you model fees. It is the larger number.

Which is cheaper for you

Buying and holding: spot, without question. You pay one fee to enter, one to exit, no funding, and no liquidation risk. The 0.100% is the entire cost.

Active intraday trading: futures, on rate, provided you are honest about leverage. At 2x to 3x the fee burden relative to capital is comparable to spot; at 20x it is dramatically higher.

Accumulating a position over time: spot with limit orders, and MEXC specifically if fees are the deciding factor, because a zero maker rate means the accumulation itself is free.

Hedging a spot holding: futures, because that is what they are for, and the fee is a rounding error against the risk being managed.

The lever that applies to both

Fee cashback returns a share of what you paid in either market, so it does not change the spot-versus-futures decision — it lowers both sides by the same proportion. What it does change is the threshold at which fees stop mattering to your strategy.

A futures trader paying 0.055% taker with 40% returned is effectively paying 0.033%. That is below what most people assume the cheapest venue charges, and it is available without moving exchange or changing order type. Where that money comes from explains the mechanism.