Liquidity Providers are not charged any fees to deposit or withdraw coins from pools on Aftermath. Rather, they earn fees which are paid by traders who utilize the liquidity in the pools to swap from one coin to another.
The Trade Fees charged by any specific pool are determined when the pool is created. For Official Pools on Aftermath, a Trade Fee of 0.3% is charged to traders for Uncorrelated pools, and 0.1% for Stable pools.
Fees for Community Pools will vary, as they are specified by the creator of the pool. Each pool lists its Trade Fee on its respective page, so you can view it prior to becoming an LP.
Trade Fee for each pool is listed on its respective page with the rest of the Pool details.
In addition to the Trade Fee for each Pool, a Protocol Fee of 0.005% is charged by Aftermath, paid by traders swapping coins through the Pool. No fee is charged to Liquidity Providers.