Last updated: October 19, 2026
Spread is the gap between the market price and the rate an exchange gives you — it's how instant exchanges earn money, typically 0.5–1% — while slippage is the difference between the rate you were quoted and the rate you actually got because the price moved or liquidity ran out. On an instant exchange the spread is built into the quote; slippage mostly affects floating-rate orders and DEX trades. Knowing both lets you compare swaps by what really matters: the amount you receive. Compare it live on BTC → XMR.
- 0.5–1% typical instant-exchange spread
- 1–3% on small or volatile coins
- 0% slippage on a fixed-rate order
- 1 number to compare: you receive
Spread vs slippage vs fees at a glance
| Cost | What it is | When you see it | How to reduce it |
|---|---|---|---|
| Spread | Exchange's margin vs market price | Already inside the quote | Compare exchanges |
| Slippage | Price moves between quote and execution | When the order is executed | Fixed rate, faster deposits |
| Network fee (yours) | Blockchain fee to send your deposit | In your wallet when sending | Cheaper networks, normal priority |
| Payout network fee | Fee to send you the new coin | Usually included in the quote | — |
| Hidden gap | Order pays less than the quote | On the order screen | Check the order amount |
How spread works on instant exchanges
An instant exchange buys your coin and sells you another at prices slightly worse than the market midpoint; the difference is its revenue. Liquid pairs like BTC → XMR or USDT → BTC have tight spreads; small-cap or meme coins have wider ones. Because the spread is already in the "you receive" figure, you don't need to calculate it — just compare that figure across exchanges in the swap table. More on total costs in the cheapest crypto swap.
How slippage happens
- Floating-rate swaps: the rate is set when your deposit confirms, not when you create the order. If the market moves during a slow Bitcoin confirmation, you get more or less.
- Large orders: big amounts can exhaust liquidity at the quoted price — see large amounts.
- DEX trades: you set a slippage tolerance; too high invites front-running bots, too low makes trades fail.
Fixed vs floating: the slippage trade-off
A fixed rate removes slippage: the payout is locked when you create the order, as long as you deposit within the time window. The exchange prices that risk in, so fixed quotes are often slightly lower than floating ones. Use fixed when the market is volatile or your deposit is slow; floating when you can deposit fast on a calm market. Full comparison: fixed vs floating rate swaps.
How to get the best rate (step by step)
- Compare the "you receive" amount across 30+ exchanges, not the headline rate.
- Check limits — a quote below the exchange's minimum is useless (we mark these).
- Pick fixed or floating based on volatility and how fast your coin confirms.
- Verify the order screen shows the same amount as the quote — a gap means a fake rate.
- Send on a cheap, fast network when possible, e.g. USDT on TRC-20 — see USDT networks compared.
Frequently asked questions
What is spread in crypto?
The difference between the market price and the rate an exchange offers you. It's how instant exchanges make money and is built into the quote.
What is slippage in crypto?
The difference between the expected rate and the rate you actually get, caused by price movement or limited liquidity between quoting and execution.
How do I avoid slippage on a swap?
Use a fixed-rate order and send your deposit promptly. The payout is then locked regardless of market moves.
Why are spreads wider on some coins?
Less liquid or more volatile coins carry more risk for the exchange, so it charges a wider spread.
Is a lower spread always better?
Only if the exchange actually pays what it quotes. Compare the final amount and the exchange's track record, not just the spread.
Compare real "you receive" amounts: BTC → XMR, USDT → BTC or all pairs. No account, no ID, no logs.