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What is a swap 'surplus', and where does it end up when my swap is completed?
What is a swap 'surplus', and where does it end up when my swap is completed?

Everything you need to know about a swap 'surplus' on 1inch Network

Matt avatar
Written by Matt
Updated over a week ago

What is a swap surplus?

A swap surplus is the result of a unique market dynamic known as "positive slippage". In other words, if a token pair's rate changes positively from the time of submitting a transaction to the time of its confirmation, an excess aka "surplus" amount of tokens is returned (relative to the guaranteed amount entered in the swap window).

***Please note: A swap surplus is not a trading fee, and does not occur with every swap.

**** With the 1inch router v4 and v5 update, optimized routers such as unoswap, uniswapV3Swap and clipperSwap along with any fillOrder function will never take a surplus, only the swap function.

Where does a surplus amount of tokens end up after a swap is complete?

When a swap surplus happens, 100% of this amount goes to the user who initiated the swap! This was voted on and changed with [1IP-28] Discontinue Swap Surplus Collection, through the 1inch Network DAO.

Want to participate in 1inch Network governance? Check out this guide.

Questions, Comments, Concerns? Feel free to reach out in our Live Support Chat!

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