What causes slippage?#
- Your own size. On a curve or pool, your buy moves the price as it fills. That part is predictable from the reserves and is called price impact.
- Everyone else. Solana slots are roughly 400 ms. Between your click and your transaction landing, other buys and sells can land first and move the price you trade against.
What does slippage exceeded mean?
The tolerance protects you from the second cause. Set 10% and the swap fails if the execution price is more than 10% worse than quoted. "Slippage exceeded" means exactly that: the price moved past your limit before your transaction landed.
How to set your slippage tolerance#
Too tight, and buys on fast-moving coins fail and you pay network fees for nothing. Too loose, and you accept worse fills, and a wide tolerance tells a sandwich bot how far it can push the price in front of you.
The right number depends on how fast the coin is moving and how much your order moves it. A larger priority fee or Jito tip can shorten the delay, which reduces the second cause, but does nothing about your own impact.
Slippage settings on Solana gives starting ranges by situation, and sandwich attacks explains how to protect yourself from them.
Slippage on a Fullport account#
Fullport waits a modeled 250 ms after you submit, reads the curve or pool fresh, and fills at the venue formula's price for your size. If that price is beyond your slippage tolerance, the order returns `SLIPPAGE` and nothing fills, just as on-chain.
Orders whose own impact would exceed 15% are sent back for resizing by the impact cap, and no simulated bot sandwiches you. See what happens on an order.
Your slippage habits carry over: the same logic applies in Fullport's browser terminal or with Fullport Tap on the terminal you already use, with 80% of payouts to you once funded.
Quick answers
- What does slippage exceeded mean?
- It means the price moved further than your slippage tolerance allowed between quoting and execution, so the swap was cancelled rather than filled at the worse price. On a real chain you still pay the network fee for the failed transaction.
- Is slippage the same as price impact?
- No. Price impact is how far your own order moves the price. Slippage is the total gap between the expected and actual fill, which includes your impact plus any price movement from other trades landing first.
- What does slippage tolerance mean?
- It is the worst price change you will accept on an order, as a percentage of the quoted price. If the fill would be worse than that, the transaction fails instead of executing. Higher tolerance fills more often but at worse prices.