The short answer: there is no single cheapest exchange, because cashback is a percentage of a fee that each exchange sets differently. A 50% rebate on a higher fee can cost you more than a 40% rebate on a lower one. What decides your real cost is the exchange’s own fee schedule, your VIP tier, whether you are maker or taker — and then the rebate on top. The table below compares the rates and the payout mechanics; the calculator does the arithmetic for your own volume.
Why the headline percentage is the wrong comparison
Cashback is calculated from the trading fee you paid. So the number that matters is not the rebate percentage on its own, but what is left after it:
effective fee = trading fee − (trading fee × cashback rate)
Exchange A
Exchange B
The smaller rebate wins here — because the fee underneath it is lower. These are hypothetical figures used to show the arithmetic, not published rates from any exchange. Run your own numbers in the calculator.
Two exchanges with different base fees can easily swap places once that sum is done. An exchange advertising a higher rebate on a more expensive fee schedule can end up costing more per trade than one advertising a lower rebate on a cheaper schedule. The percentage is only half the equation, and it is the half everyone quotes.
The second thing a percentage hides is how the money arrives. A rebate credited automatically every day is not the same product as one where part of it has to be requested. Both are real; they just ask different things of you.
The four side by side
| Exchange | Cashback rate | How it is paid |
|---|---|---|
| BingX | 40% | Automatic, daily |
| MEXC | 50% | 20% automatic + 30% daily from RebatePrime |
| Bitunix | 50% | Automatic, daily |
| OKX | 20% | Automatic, hourly |
Rates are the figures currently published and follow each exchange’s own programme terms. They are the starting point of a comparison, not the conclusion.
MEXC is the one to read carefully. Its 50% is split between two sources: 20% is credited automatically by MEXC, and 30% is sent daily by RebatePrime to the Spot Wallet. Nothing needs to be claimed.
Turnover generates fees, and fees generate cashback. A balance that sits still generates neither — which is why a modest account traded actively can out-earn a large one traded rarely.
How to work out your own number
You need two inputs, and only one of them is on this page.
The first is your own fee spend — not your account balance. Cashback scales with turnover, so a smaller account that trades frequently can earn more of it than a large one that trades occasionally. Most exchanges show a fee total per period in the account history.
The second is the rebate rate, which is in the table above.
Put both into the cashback calculator and it returns the estimated rebate and the effective cost for each exchange. For a side-by-side view of the published rates and payout methods on one screen, the comparison page keeps them current automatically.
What each one is actually good at
BingX
40% is credited automatically on the current daily cycle, with nothing to claim. Its strength here is the short path between trading and receiving cashback. Whether it is cheapest for you still depends on the fee schedule you actually pay.
MEXC
MEXC currently shows 50% total cashback and uses a split payout: 20% from MEXC automatically, then 30% sent daily by RebatePrime. There is no extra claim step; the difference is the payout source.
Bitunix
50% is paid automatically on the current daily cycle, with the full rebate credited by Bitunix rather than split between the exchange and RebatePrime. Whether that translates into the lowest cost for you still depends on the fee schedule for the products you actually trade.
OKX
OKX currently shows 20%, with eligible fee rebates typically credited in hourly batches. For traders already using OKX for liquidity, product range or familiarity, the rebate can reduce effective costs; the rate should still be considered alongside the underlying fee schedule.
Our overall pick: BingX. Its cashback workflow is simple: automatic daily credits handled inside the exchange account. Split-payout alternative: MEXC. Its current total rate is shown dynamically above. The payout is split between MEXC and a daily RebatePrime top-up. Nothing to claim. Bitunix remains a strong exchange-paid alternative. Your lowest real cost still depends on the fee schedule you actually pay.
Choosing between them
A rebate rate is a reason to prefer one exchange over another only when everything else is close to equal. It is rarely the deciding factor on its own, and it should not outrank liquidity, product availability or whether the platform is actually pleasant to trade on.
With that said, a rough guide:
- If you want the least ongoing effort: BingX is our overall pick for the simplest cashback workflow — automatic daily credits handled by the exchange.
- If MEXC’s split payout fits you: 20% is credited automatically by MEXC and 30% is sent daily by RebatePrime.
- If you prefer a fully automatic daily payout: Bitunix is a strong alternative, subject to its own fee schedule and product fit.
- If you are already settled on an exchange: take the rebate that exists there rather than moving for a slightly better rate. Moving has its own costs.
- If you are choosing from scratch: run your expected monthly fee through the calculator for each, then compare the effective cost — not the percentages.
- You are comparing effective cost after cashback, not rebate percentages.
- You know your own monthly fee spend — it decides the rebate far more than account size does.
- For MEXC, you have separated the automatic 20% MEXC credit from the 30% daily RebatePrime top-up.
- The account is properly attributed to the partner — without that step there is no rebate to compare.
- You have weighed liquidity and product range, not just the rebate.
Common questions
Which exchange has the lowest trading cost after cashback?
There is no single answer, because it depends on the fee you actually pay — which varies by exchange, VIP tier, product and whether you are maker or taker. The rebate is applied on top of that fee, so the exchange with the highest rebate is not automatically the cheapest. Run your own monthly fee spend through the calculator to get a figure that applies to you.
Is a higher cashback percentage always better?
No. Cashback is a percentage of the fee you paid, so a higher percentage on a more expensive fee schedule can leave you worse off than a lower percentage on a cheaper one. Compare what is left after the rebate, not the rebate itself.
Why is MEXC listed as 20% automatic plus 30% from RebatePrime?
Because the payout comes from two sources. MEXC credits the automatic portion on its normal cycle; RebatePrime sends the remaining portion daily to the Spot Wallet. Neither part requires a claim.
Can I use more than one exchange and collect cashback on each?
Yes. Each exchange runs its own programme, and each account is attributed separately. Some traders use one exchange for the products it does well and another for the rebate, which is a reasonable approach as long as you track fees on both.
Does cashback change the fee I pay at the moment of the trade?
No. The exchange charges its normal fee at execution. The rebate is a separate credit paid afterwards out of the commission the exchange pays the partner, so what changes is your net cost, not the fee itself.
Does any of this guarantee a profit?
No. Lowering the cost of trading is not the same as making trading profitable. Trading digital assets carries a high risk of loss regardless of any rebate.
Put your own monthly fee spend in and compare the effective cost across all four.
Open the Cashback Calculator →