Phantom swap fee calculator
Phantom adds a 0.85% fee to most in-app swaps, shown before you confirm. Enter the trade size, network fee and slippage setting to see the worst-case cost, and compare it with the same trade at a different fee. You type every value, so nothing is fetched or sent.
How the estimate works
Fee = swap size × fee rate. Slippage is the maximum price movement you accept; the real difference is often smaller. On Solana the network fee is usually a fraction of a cent; on Ethereum it can be several dollars. Phantom's quote screen shows the fee and the minimum you will receive before you confirm; use those numbers when you have them. More in Phantom fees explained.
Frequently asked questions
Is the 0.85% fee included in the quote?
Yes. Phantom shows its fee in the swap screen before you confirm, and the quote already accounts for it.
Can I avoid the Phantom swap fee?
You can connect Phantom to a swap site directly instead of using the in-app swap. Those sites may charge their own fees, and you must make sure you are on the real site.
What slippage should I use?
For large, liquid tokens a low setting (0.5% or less) is usually enough. Volatile memecoins may need more, which also means you may get a worse price.