How to calculate the position margin for CoinEx contracts?

"Understanding position margin on CoinEx is key to managing risk, as it determines the collateral needed for leveraged trades and affects liquidation risk."

Jun 14, 2025 at 01:42 am

Understanding Position Margin in CoinEx Contracts

When trading futures contracts on CoinEx, understanding how to calculate the position margin is essential for effective risk management. The position margin refers to the amount of funds required to open and maintain a leveraged position. It acts as collateral to ensure that traders can cover potential losses.

In CoinEx contract trading, there are two types of margins: isolated margin and cross margin. Isolated margin allocates a specific amount of margin to each position, limiting the liquidation risk to only that particular trade. Cross margin, on the other hand, uses the entire account balance as collateral, spreading the risk across all open positions.

Key Takeaway: Choosing between isolated and cross margin directly affects how much margin is allocated to your position and how close you are to liquidation.

---

Components That Affect Position Margin Calculation

To accurately calculate the position margin, several variables must be considered:

• Contract Value: This is determined by the number of contracts multiplied by the price per contract.
• Leverage Used: Higher leverage reduces the required margin but increases the risk of liquidation.
• Margin Mode: As previously mentioned, whether you're using isolated or cross margin will influence how much margin is locked per position.
• Funding Fees: These periodic payments can slightly affect your margin over time, especially in long-term positions.

Each of these components plays a role in determining the actual margin requirement for a position.

• Example: If you're trading BTC/USDT perpetual contracts with a leverage of 10x, and the value of the position is $1000, then the required margin would be $100.
• Note: On CoinEx, the initial margin requirement may vary depending on the asset and the selected leverage level.

---

Step-by-Step Guide to Calculating Position Margin

Calculating your position margin manually allows for greater control and understanding of your exposure. Here’s how you can do it:

• Determine Contract Size: Find out how many units of the underlying asset one contract represents. For example, on CoinEx, 1 BTC contract equals 1 USD worth of BTC.
• Calculate Position Value: Multiply the number of contracts by the current market price of the asset. For instance, if BTC is trading at $30,000 and you have 10 contracts, your position value is $300,000.
• Apply Leverage: Divide the position value by the leverage used. Using 20x leverage, $300,000 / 20 = $15,000. This is your required margin.
• Check Initial Margin Requirements: CoinEx sets minimum margin requirements based on leverage tiers. Ensure your calculated margin meets or exceeds this threshold.
• Consider Maintenance Margin: This is the minimum amount of margin that must be maintained to keep the position open. If your equity falls below this, liquidation occurs.

Important: Always verify the current margin requirements on the CoinEx platform before placing trades, as they can change based on market conditions and exchange policies.

---

Using the CoinEx Interface to Monitor Margin Usage

CoinEx provides real-time tools to monitor your position margin usage. Once a position is opened, the following details are typically displayed:

• Margin Used: The actual margin allocated to the position.
• Leverage Applied: The leverage ratio currently applied to the trade.
• Liquidation Price: The estimated price at which your position will be forcibly closed due to insufficient margin.
• Equity and Balance: Shows how much free margin remains after accounting for open positions.

Traders can access this information from the Positions tab on the futures trading interface. Additionally, CoinEx offers a margin calculator tool on its website to help users estimate their margin requirements before entering trades.

Tip: Use the CoinEx margin calculator to simulate different scenarios and understand how changes in price or leverage affect your margin needs.

---

Common Mistakes in Margin Calculation

Even experienced traders sometimes make errors when calculating position margin. Some common pitfalls include:

• Ignoring Funding Rates: Holding positions overnight incurs funding fees, which reduce available margin over time.
• Miscalculating Leverage: Misunderstanding how leverage impacts margin can lead to unexpected liquidations.
• Overlooking Fee Structures: Trading fees and insurance funds also impact net margin and should be factored into calculations.
• Not Checking Margin Mode: Switching between isolated and cross margin without adjusting accordingly can result in misallocated capital.

Caution: Always double-check your inputs and settings on the trading platform to avoid costly mistakes.

---

Frequently Asked Questions (FAQs)

Q: What happens if my position margin drops below maintenance margin?

A: If your equity falls below the maintenance margin level, your position will be automatically liquidated by the system to prevent further losses.

Q: Can I adjust the margin for an existing position on CoinEx?

A: Yes, CoinEx allows users to increase or decrease the margin allocated to an open position using the "Adjust Margin" feature under the Positions tab.

Q: How does leverage affect liquidation risk?

A: Higher leverage reduces the required margin but makes the position more sensitive to price fluctuations, increasing the likelihood of liquidation.

Q: Does CoinEx charge interest on borrowed margin?

A: No, CoinEx does not charge interest on margin used for trading. However, funding fees apply for holding positions past the settlement period.