The Fees table is the reference sheet behind every "NET" number in ArbiScreen. It lists, per exchange, the trading and withdrawal costs we subtract when we calculate real profit. If you ever wonder why a fat spread shows a thin Net — this is where the money goes.

• Exchange — the venue.
• Spot maker / taker — trading fee on spot. Taker (market order) is what most arbitrage uses.
• Fut. maker / taker — trading fee on futures/perps.
• Withdraw USDT — the cost to move USDT off the exchange — a real cost when you rebalance between venues.

• A spread must clear both legs' taker fees plus any transfer/withdrawal cost to be worth taking.
• Maker orders are cheaper but may not fill in time for a fast-moving spread.
• These fees feed the Spot, Futures and Calculator tools automatically — you rarely need to do the math by hand.