Trading Costs Guide: Fees, Funding and Slippage

Trading costs affect PnL more than you think

Net PnL on a futures trade is gross profit minus costs: Net PnL = gross PnL − trading fees − funding − slippage. For short-term and high-frequency styles, costs often decide the long-term outcome more than the direction call itself.

Leverage magnifies gross PnL and margin usage, but it does not reduce fees or funding — those are charged on notional value and are independent of your leverage.

Trading fees: charged on notional value

Open and close orders each pay a fee based on the notional value (taker and maker rates differ, and large accounts usually get tiered discounts).

Example: for a 20,000 USDT notional position at 0.05% per side, round-trip fees = 20,000 × 0.05% × 2 = 20 USDT. The rate looks small, but frequent entries and exits keep stacking up.

• Posting liquidity with limit orders (maker) usually costs less.
• Check the exchange's fee tiers; VIP or holding-based discounts can cut costs a lot for frequent trading.

Funding rates: the carrying cost of perps

Perpetual contracts have no expiry, so exchanges use a funding rate to keep the contract price anchored to spot. It is exchanged periodically (often every 8 hours) between longs and shorts: when the rate is positive and you are long, you pay shorts — and vice versa.

The longer you hold, the more funding accumulates, which matters for hedgers and longer-term positions. Estimate total funding with the funding rate calculator before opening to judge whether the strategy still pays.

Slippage: the hidden cost of market orders

When liquidity is thin or the market is moving fast, your average fill price can drift from the mark price you saw — that drift is slippage.

Use the slippage cost calculator with quantity, price and expected slippage % to see the hidden impact on total notional. For large orders, consider splitting or using limit orders.

Break-even price: bake costs into the price

The break-even price for a long is the price high enough above entry to cover round-trip fees (and expected funding). If you exit at your entry thinking you broke even, you actually took a small loss once costs are included.

Feed the rates into the break-even price calculator before opening so you know the true recovery point and do not mistake “back to entry” for “no loss”.

A pre-trade cost checklist

• Use the trading fee calculator to find round-trip fees as a % of notional value.
• If you plan to hold beyond a day, use the funding rate calculator with rate and periods to see whether funding eats your expected profit.
• For market orders, use the slippage cost calculator to budget extra costs on thin books or volatile sessions.
• Finally, use the break-even price calculator to confirm the true recovery price and set your take-profit above it.

This guide is for educational purposes only and is not investment advice. Always follow your exchange's actual margin, liquidation and fee rules, and keep a buffer for extreme market moves.