How to calculate Bybit profit and loss (PnL)? A Bybit PnL explanation.

Understanding Bybit Profit and Loss (PnL) in Spot Trading

1. In spot trading on Bybit, calculating profit and loss is straightforward since it involves buying and selling assets directly. The formula used is: PnL = (Selling Price - Buying Price) × Quantity Sold. For example, if you purchase 0.5 BTC at $30,000 and later sell it at $35,000, your profit would be ($35,000 - $30,000) × 0.5 = $2,500.

2. Fees are an essential factor in spot PnL calculations. Bybit charges a taker or maker fee depending on your order type. These fees reduce the final realized profit. If the same trade above incurs a 0.1% fee on both buy and sell sides, the net profit adjusts downward accordingly.

3. When dealing with stablecoin pairs like BTC/USDT, valuation remains consistent, simplifying calculations. However, when trading against volatile pairs such as BTC/ETH, additional conversion steps may be needed to determine accurate USDT-denominated profits.

4. Unrealized PnL does not apply in spot trading unless positions are held without closing. Once a trade is settled, the PnL becomes realized and can be viewed in your wallet history or transaction records within the Bybit interface.

Calculating PnL in Bybit Futures Contracts

1. In perpetual futures contracts, PnL is split into realized and unrealized components. Unrealized PnL reflects gains or losses on open positions based on the current market price versus entry price. The formula for long positions is: Unrealized PnL = Position Size × (Mark Price - Entry Price).

2. For short positions, the calculation flips: Unrealized PnL = Position Size × (Entry Price - Mark Price). Mark price, not last traded price, is used to prevent manipulation and ensure fair liquidation levels.

3. Realized PnL occurs when a position is closed. It accounts for entry and exit prices, including funding fees paid or received during the holding period. Funding fees are exchanged between longs and shorts every 8 hours and must be factored into net profit assessments.

(p)4. Leverage amplifies both gains and losses. While leverage doesn't change the PnL formula directly, it affects position size relative to margin. A 10x leveraged position will experience tenfold changes in PnL compared to a non-leveraged one given the same price movement.

Isolated vs Cross Margin Mode Impact on PnL

1. In isolated margin mode, the maximum loss is limited to the margin allocated to a specific position. This makes risk management more predictable. PnL calculations remain the same, but liquidation occurs when losses exceed the assigned margin.

2. Cross margin mode uses the entire available balance as collateral. While this reduces the chance of liquidation, large losses can significantly deplete overall equity. Traders must monitor total exposure since PnL from one position affects the health of others.

3. Liquidation price is derived from entry price, leverage, and fees. As unrealized losses grow, the system estimates the price at which the position will be forcibly closed. This price depends on whether the contract is linear (denominated in USDT) or inverse (denominated in cryptocurrency).

4. Maintenance margin, a small percentage of the position value, determines how close a position can get to zero before liquidation. Higher maintenance margins require larger buffers, indirectly influencing how much adverse price movement a trader can withstand before realizing a full loss.

Frequently Asked Questions

How does funding rate affect my futures PnL? Funding rates are periodic payments made between long and short traders. If you hold a long position when funding rates are positive, you pay shorts; if negative, you receive payments. These amounts accumulate over time and directly impact net PnL upon position closure.

Why is mark price used instead of last traded price for PnL? Mark price prevents price manipulation and ensures fairness in liquidations and insurance mechanisms. It’s typically derived from external index prices and funding rate alignment, offering a more reliable valuation than volatile spot trades.

Can I view historical PnL reports on Bybit? Yes, Bybit provides detailed account statements and order history through its platform. Users can access closed positions, realized PnL, funding payments, and fee records under the “Assets” or “Reports” section depending on the interface version.

Does Bybit include transaction fees in its PnL display? Bybit's interface typically shows gross PnL before deducting fees. To determine net profit, users must manually subtract taker/maker fees and funding costs from the displayed value for precise accounting.