Why there is no fixed answer
Lists of the lowest fee crypto exchange go stale quickly. A service can be cheapest for one pair and dearer for the next, because each pair is routed differently and rates move every few seconds.
The amount matters as well. Some costs are a percentage of what you swap, and some are a fixed charge. A fixed charge is small against a large swap and large against a small one.
The three costs inside a swap
- Service fee. A percentage or a fixed charge that the service states. This is the number on the banner.
- Network fee. What the blockchain charges to move your funds out. It is a set amount, so it does not shrink when you swap more.
- The rate. The gap between the market price and the price you are given, called the spread. It is often not labelled as a fee, and it can be the largest cost.
Measure the total, not the parts
Take the market value of what you send. Take the value of what you would receive. The difference is the all-in cost, and dividing it by what you send gives a percentage you can compare across services.
Use the minimum received, not the expected amount. The minimum is the figure a service has to stand behind, and it already allows for slippage.
A worked example, 20 October 2026
These figures come from one live quote shown by Sense Swap on that day. They are rounded and they are here to show the method, not to promise a price. Rates and fees change by the minute.
- Sent: 0.01222 BTC, worth about $1,000 at the reference price shown.
- Expected to receive: about 996 USDT on Tron.
- Listed fees: a 0.1% service fee of about $1.00 and a payout network fee of about $0.22, so about $1.22 in total.
- The gap between the value sent and the value received was about $4, or 0.4%.
- So the listed fees explained about a third of the cost. The rest sat in the rate.
Small amounts cost more, in percent
A payout network fee of about $0.22 is 0.02% of a $1,000 swap and 1.1% of a $20 swap. If you are moving a small amount, check the fixed charges first, and check the minimum amount the route accepts.
What a no-fee label usually means
A service that shows no fee still has to be paid. The cost is usually moved into the rate. This is why a headline fee on its own tells you little, and why the minimum you receive is the better number.
How to compare in five minutes
- Use the same pair and the same amount on every service.
- Do it at about the same time, since rates move.
- Write down the minimum received from each, not the headline fee.
- Add the fee your own wallet charges to send the deposit.
- Check the refund terms and how long the quote lasts. A cheap quote that expires before you can send is not a quote.
What Sense Swap shows
Before you send, Sense Swap lays the quote out as a receipt: the rate, the minimum received, each fee in its own asset and in US dollars, a total, and the estimated time. The total counts the fees a completed swap pays. A fee charged only if a swap is refunded is shown separately and is not added in.
If a fee cannot be priced in dollars, the total reads "Not totalled" instead of leaving it out. We do not claim to be the lowest fee crypto exchange. Compare our minimum received with any other service for the same amount.
Questions
- Which crypto exchange has the lowest fees?
- None is lowest for every swap. It depends on the pair, the amount and the moment. Compare the minimum you would receive from each service for the same amount, and include the network fee.
- What is the cheapest way to swap crypto?
- Compare the total received for your exact pair and amount, swap a larger amount less often so fixed charges weigh less, and check what your own wallet charges to send the deposit.
- Is a swap with no fee really without cost?
- No. The cost is usually in the rate instead of a fee line. Compare the amount you receive, not the label.
- Do I pay Sense Swap a fee?
- Where a service fee applies, it is shown as a line in the receipt before you send, together with the network fees and the total.