The key difference between One-Way and Hedge mode is whether a contract can hold both a long and a short position at the same time. In One-Way mode you can only choose one direction; opening the opposite side will automatically offset part of your existing position. Hedge mode (two‑way) lets you hold both long and short positions in the same contract, with each side calculated independently. From June 15, 2026, Binance has unified the position mode settings for USDⓈ‑M and COIN‑M Futures contracts. COIN‑M will follow the USDⓈ‑M setting.
Step 1： Check which mode you are currently using
【What to do】 Check your current account position mode setting.
【How to do】 Go to the Futures trading interface — either USDⓈ‑M or COIN‑M — tap the 【Settings】 icon in the top‑right corner → choose 【Trading】 → 【Position Mode】. Here you will see whether you are in "One‑Way Mode" or "Hedge Mode".
If you have open positions or pending orders, the system will not allow you to switch modes. You must close positions or cancel orders first. After the June 15, 2026 upgrade, if the USDⓈ‑M and COIN‑M settings do not match, COIN‑M will be forced to sync to the USDⓈ‑M setting. All open orders will be cancelled during the sync.
【Completion standard】 You know exactly whether you are in One‑Way or Hedge mode, and both USDⓈ‑M and COIN‑M settings are the same.
Step 2： Order logic differences — the positionSide field decides everything
This is the most important practical difference. It directly determines what parameters you need to fill in when placing an order.
One‑Way Mode: Do not fill in the
positionSideparameter when placing an order. The system only acceptsBOTHby default. Because you can only have one position per direction, the system can tell long from short just by theside(BUY or SELL).Hedge Mode: You must fill in
positionSidewhen placing an order, and you can only chooseLONGorSHORT. Since the same contract can hold both a long and a short position at the same time, the system needs to know which side you are adding to or reducing.
Here is a real example： You open a BTC long position and then want to open a short. In One‑Way mode, the system treats that short as a hedge and either closes part of the long or simply does not allow it. In Hedge mode, the system allows you to open the new short independently. Both positions can exist at the same time.
【Completion standard】 You know how to place orders in both modes, especially that in Hedge mode you need to distinguish between LONG and SHORT.
Common failure reason: Many people get used to one mode and forget to change the order parameters after switching. The most common mistake is moving from One‑Way to Hedge mode and forgetting to set positionSide, which causes the order to be rejected.
Step 3： Margin calculation differences
The two modes calculate occupied margin differently. This directly affects capital efficiency.
One‑Way Mode: Margin is based on the net position. Formula:
max( |position notional value + buy order value|, |position notional value – sell order value| ) / leverage.Hedge Mode: Long and short sides are calculated separately, then added together. Formula:
Long margin requirement + Short margin requirement.
Simply put, in Hedge mode, if you hold both a long and a short position, both sides tie up margin, so capital efficiency is lower. In One‑Way mode, the net position uses less margin. That is why most ordinary users find One‑Way mode sufficient — only advanced traders who need precise hedging strategies need Hedge mode.
Risk reminder when switching: If you switch from Hedge mode back to One‑Way mode while holding both long and short positions, the system will net out the long and short positions at the current mark price and reopen a net position. This means your average entry price and account balance could change significantly. You bear the resulting profit or loss.
How to verify after switching: After changing the mode, go to the "Open Orders" or "Positions" page and confirm the state is what you expect — whether positions still exist, direction is correct, average price has changed. If something looks wrong, manually close unwanted positions before the system forces a settlement.
