The Uniswap Fees per Fee Tier metric represents the cumulative value of transaction fees generated for Uniswap v3 on the Ethereum blockchain, expressed in USD. Fees are collected from traders during token swaps as a small percentage of the trade value. They are used to reward liquidity providers for contributing assets to the liquidity pools.

This metric serves as an indicator of the platform's overall trading activity and the potential returns for liquidity providers. A higher fee value reflects increased trading volume and engagement on the platform, signaling a more active and robust ecosystem. For each traded token-pair Uniswap allows for pools with four different trading fee tiers: 0.01%, 0.05%, 0.3%, 1%. This metric presents the total value of fees generated for a given fee tier on Uniswap V3.

To improve its accuracy, adjustments have been made by eliminating token reserves that showed signs of token price manipulation.