What Is Slippage?
Slippage is the gap between the price you see when you click "swap" and the price you actually pay when the transaction is confirmed. On a DEX like Uniswap or Raydium, your trade moves the pool's price — the larger your order relative to the pool, the more the price moves against you.
For example, if a token shows $1.00 and you buy $5,000 worth in a small pool, the price might move to $1.03 by the time your trade executes. You end up paying $1.03 per token instead of $1.00. That 3% difference is slippage.
What Causes High Slippage?
- Low liquidity: Small pools with few tokens can't absorb large orders without moving the price significantly.
- Large order size: A $10,000 order in a $50,000 pool will move the price far more than a $100 order.
- Hidden sell tax: Some contracts apply a tax on sells, which shows up as slippage. A 25% sell tax means you "lose" 25% — which looks like extreme slippage.
- MEV / front-running: Bots may see your pending transaction and buy before you, pushing the price up before your trade executes.
- High volatility: During rapid price moves, the price changes between submission and execution.
When Slippage Signals a Scam
Normal slippage for a token with decent liquidity is 0.5–2%. If you are seeing 10%+ slippage on a token that has reasonable pool depth, it is likely not market mechanics — it is a hidden sell tax built into the contract. This is a common honeypot technique: the contract applies a 50–99% tax on sells, which appears as massive slippage.
Always run a security scan before trading. GuavaIntel's scanner checks the actual buy and sell tax rates via GoPlus, so you know whether high slippage is a market condition or a contract-coded trap.
How to Set Slippage Tolerance
Most DEX interfaces let you set a "slippage tolerance" — the maximum slippage you will accept. If the actual slippage exceeds your tolerance, the transaction reverts. This protects you from unexpected price moves, but setting it too high on a scam token means you accept the full tax.
A good rule: use 0.5–1% for established tokens, 2–5% for newer tokens, and never go above 5% unless you understand exactly why the slippage is high.
Frequently Asked Questions
What is a normal slippage tolerance?
For tokens with good liquidity, 0.5–1% slippage is normal. For smaller or newer tokens, 2–5% may be needed. Slippage above 10% is a red flag — it either means the liquidity pool is very shallow or the contract has a hidden sell tax.
Is high slippage always a scam?
No. High slippage can simply mean low liquidity — a small pool with a large order naturally produces high slippage. However, if slippage is consistently above 10% on a token with reasonable liquidity, it may indicate a hidden sell tax built into the contract.
How is slippage different from a sell tax?
Slippage is a market-driven price difference caused by the size of your order relative to the pool. A sell tax is a contract-coded fee that takes a percentage of every sell. Both reduce what you receive, but slippage is natural market mechanics while a sell tax is a contract design choice (and often a scam mechanism).
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