What Is Slippage in Crypto?
Slippage is one of the most misunderstood costs in crypto. You see a price, you start a swap, and the amount you receive is slightly different from what you expected. That difference is slippage. It is not a fee and it is not a scam, but it is real money, and it matters most when markets are volatile or amounts are large. This guide explains what slippage is, why it happens, and what you can do about it.
What slippage means
Slippage is the gap between the expected price of a swap and the price you actually get. When you start a swap, you see a quote based on the current market price. Your deposit then needs time to confirm on the network, and the market keeps moving during that window.
If the price moves in your favor, you get slightly more than quoted. If it moves against you, you get slightly less. Slippage is measured as a percentage, so a 1 percent slip on a 1,000 dollar swap costs 10 dollars, and the same slip on a 10,000 dollar swap costs 100 dollars.
Why slippage happens
The main cause is volatility. Crypto prices move every second, and a deposit that takes 10 minutes to confirm gives the market 10 minutes to move. Coins with big price swings slip more than stablecoins or large, calm markets.
Low liquidity makes slippage worse. When few buyers and sellers are active, a single large order can push the price. Large swaps also cause slippage on their own, because the order itself moves the market. The bigger your swap relative to the available liquidity, the more it slips.
Slippage on instant swaps vs exchanges
On an instant exchange like FixedSwaps, slippage comes from the time between the quote and the deposit confirmation. The quote is a snapshot, and the market does not wait for your deposit.
On a traditional exchange with an order book, slippage comes from the order book itself. A market order fills at the best available prices, and if there are not enough orders at the top price, the rest fills at worse prices. The cause is different, but the result is the same: you get slightly less than the quoted price.
How to measure slippage
Compare the quoted amount with the amount you actually received. Divide the difference by the quoted amount and multiply by 100 to get the percentage. For example, if you were quoted 1.00 ETH and received 0.995 ETH, the slippage was 0.5 percent.
Tracking slippage across your swaps helps you spot patterns. If one pair always slips more than another, you can change the pair, the timing, or the rate type to reduce it.
How to reduce slippage
The most effective tool is a fixed rate, which locks the amount you receive at order creation. Market moves after that point cannot change it. This is the best option for large swaps and volatile coins.
Other options help too. Swap during calm market periods, avoid trading in the middle of sharp crashes or spikes, and split a large swap into two or three smaller ones. Each smaller swap has less impact on the price, so the total slippage is usually lower.
When slippage is a warning sign
Small slippage on a liquid pair is normal and nothing to worry about. Large slippage is a warning sign. If the quote is several percent worse than the market price you saw elsewhere, the coin may have thin liquidity or the market may be moving fast.
In that case, stop and check. Do not confirm a swap with a quote that looks wrong. Wait for a calmer moment, try a smaller amount, or switch to a fixed rate. A few minutes of patience is cheaper than several percent of your swap.
How to avoid slippage on FixedSwaps
- Understand the quote — The quote is a snapshot. The market keeps moving until your deposit confirms, and that movement is slippage.
- Pick a fixed rate — Lock the exact amount you will receive at order creation to remove slippage entirely.
- Swap in calm markets — Avoid swapping during sharp crashes or sudden spikes, when prices move fastest.
- Split large swaps — Break a big swap into smaller ones to reduce your impact on the price.
Frequently asked questions
- What is slippage in simple terms?
- Slippage is the difference between the price quoted when you start a swap and the price you actually get when it completes. The market moves while your deposit confirms, so the final amount can be slightly higher or lower than the quote.
- How much slippage is normal?
- For liquid pairs like BTC to ETH in calm markets, slippage is usually under 0.5 percent. For volatile or thinly traded coins, it can be several percent. A fixed rate avoids slippage entirely by locking the amount.
- Can slippage make me lose money?
- Yes, if the price moves against you while your deposit confirms, you receive less crypto than quoted. The loss is the slippage percentage times your swap amount, so it matters most on large swaps.
- Does a fixed rate stop slippage?
- Yes. A fixed rate locks the exact amount you will receive when you create the order, so market moves after that point cannot change it.
More guides
How to Avoid Slippage When Swapping Crypto | Fixed Rate vs Floating Rate: Which Is Better? | Fixed Rate vs Market Rate: Which Should You Choose?
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