Fees

Overview

OBSDN charges execution fees on trades. Funding transfers are not execution fees.

Trading Fees

Fee schedule is defined by account/market configuration:

• Maker fee rate
• Taker fee rate

Execution fee formula:

$$\text{Trade Fee} = \text{Notional} \times \text{Fee Rate}$$

Where:

$$\text{Notional} = \text{Size} \times \text{Execution Price}$$

Fee Schedule

Maker and taker rates are set per market. The table below lists current rates.

Accounts may also receive a manual rate override, which replaces the per-market maker and taker rates.

This table is a snapshot. Fetch current per-market rates at runtime from GET /markets (mkr_fee_rt / tkr_fee_rt fields).

Taker Sequencer Fee

A flat fee of 0.05 USDC is charged per taker fill. This fee is separate from the percentage-based trading fee and is applied in addition to it.

Liquidation Fee

Liquidation executions can include an additional liquidation fee component.

This fee is distinct from funding and normal maker/taker charges.

Funding Is Not a Trading Fee

Funding payments are transfers between counterparties and are computed by the funding mechanism.

See Funding.

Examples

Example A: Taker Trade Fee

• Buy size: 0.20 BTC
• Price: 50,000
• Taker fee: 0.05% (0.0005)

$$\text{Notional} = 0.20 \times 50{,}000 = 10{,}000$$ $$\text{Fee} = 10{,}000 \times 0.0005 = 5$$

Fee paid: 5 USDC.

Example B: Maker Trade Fee

• Sell size: 2 ETH
• Price: 3,000
• Maker fee: 0.02% (0.0002)

$$\text{Notional} = 2 \times 3{,}000 = 6{,}000$$ $$\text{Fee} = 6{,}000 \times 0.0002 = 1.2$$

Fee paid: 1.2 USDC.

Referral Discounts

Referees receive a fee discount on every trade. Referrers earn a commission on their referees' trading fees. Rates depend on the referrer's tier (5% to 30% commission, 2% to 15% discount).

See Referral Program for the full tier table and details.

Related

• Referral Program
• Funding
• PnL and Entry Price