Order Cost Calculation for USDT Perpetual Contracts

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What is Order Cost?

Order cost refers to the total funds required to place a trade. Traders can view this amount in real-time via the order placement or confirmation window. It's influenced by factors like position value, leverage, and fees, and includes:

Order Cost Across Different Contract Types

In Unified Trading Accounts (UTA), users may collateralize other assets as margin balance—eliminating the need to hold specific settlement currencies for initial margin. However, opening/closing fees must still be paid in the settlement asset when orders execute. Insufficient funds trigger auto-borrowing (see Borrowing & Repayment for UTA).

Order Cost Formulas

USDT/USDC Contracts

Order Cost = Initial Margin + Opening Fee + Closing Fee

Inverse Contracts

Order Cost = Initial Margin + Opening Fee + Closing Fee

Note: Formulas estimate pre-order costs. Actual fees vary by order type, execution price, and VIP tier.

Practical Examples

USDT Contract

Scenario: User A opens 1 BTC long on BTCUSDT at 50,000 USDT with 10x leverage (Taker rate: 0.055%).

  1. Initial Margin: (1 × 50,000)/10 = 5,000 USDT
  2. Opening Fee: 1 × 50,000 × 0.00055 = 27.5 USDT
  3. Closing Fee: 1 × 50,000 × [0.9] × 0.00055 = 24.75 USDT
    Total Order Cost: 5,052.25 USDT

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Inverse Contract

Scenario: User B opens 10,000 USD ETHUSD long at 2,000 USDT with 25x leverage (Taker rate: 0.055%).

  1. Initial Margin: (10,000 ÷ 2,000) ÷ 25 = 0.2 ETH
  2. Opening Fee: 5 × 0.00055 = 0.00275 ETH
  3. Closing Fee: 5 × [1.04] × 0.00055 = 0.00286 ETH
    Total Order Cost: 0.20561 ETH

Order Placement Methods

Bybit supports three primary methods:

Quantity-Based Orders

Default method—input contract units. For inverse contracts, 1 contract = 1 USD; USDT/USDC contracts use the underlying asset (e.g., MNT for MNTUSDT).

Cost-Based Orders

Enter total intended cost; system calculates contract quantity. Must meet minimum order requirements. Available only in bidirectional position mode.

Position Value Orders

Specify desired position value (in crypto for inverse contracts, USDT/USDC for others). System derives contract quantity subject to minimum thresholds.

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FAQ Section

Q1: Can I reduce order costs?
A1: Yes—using limit orders (Maker fees), higher VIP tiers, or lower leverage reduces fees.

Q2: Why does my order cost exceed available balance?
A2: This occurs when estimated fees + margin exceed collateral. Deposit more funds or adjust position size.

Q3: Are closing fees charged immediately?
A3: No, they're estimated during order placement but only charged upon actual trade closure.

Q4: How does UTA simplify margin management?
A4: It allows cross-asset collateralization, though settlement assets remain needed for fees.

Q5: What's the minimum order cost for BTCUSDT?
A5: Depends on current price and leverage. Calculate using the formulas above with your parameters.