What the spread really costs on an instant swap
No fee line does not mean free. How to read the gap between the market price and what actually lands in your wallet.
Instant swap sites rarely show a fee line. The cost is inside the rate. That is not a trick, it is how the business works, but it makes comparing hard unless you know what to look at.
Three things live inside the rate
- The margin. The income for doing the exchange.
- The network fee for sending you the new coin, which varies by chain.
- Market movement during the swap, on a floating rate.
The only number that matters
Ignore headline rates. The number that counts is what lands in your wallet. Compare it with what the same amount would be worth at the open market price. The gap between the two, as a percentage, is your all in cost.
That is exactly how SwapAnonymously shows a swap. You see the amount after every fee and, right beside it, how far it is from the market, like minus 0.9 percent. No surprises at the end.
What a fair spread looks like
It depends on the pair and the size. Big liquid pairs like BTC to USDT are usually cheaper than smaller coins. Very small swaps cost more in percentage terms, because the network fee to send you the coins is about the same whatever the amount.
Check it yourself
Type an amount on the swap page and watch the spread move as you go up and down. You will often find a point where network fees stop dominating. Then compare a few pairs on the pairs page.
Quick answers
Is the market price shown a price I can get?
No. It is a benchmark from public market data so you can measure the rate. Instant swaps build their margin and network fees into the rate.
Why does the result change with size?
Network fees are roughly fixed per transfer, so they weigh more on small swaps. Larger swaps usually get a better percentage.
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