Advantages and Mechanisms of Coin-Margined Contracts: From Low Leverage Trading to Risk-Free Arbitrage

Coin-margined contracts are derivative trading tools that use cryptocurrencies as the margin basis, forming two different risk-reward models compared to USDT-margined contracts. Choosing between coin-margined and USDT-margined determines your liquidation risk, sources of profit, and capital management approach in the market. Both modes have their advantages, but coin-margined contracts offer unique benefits under certain strategies.

Fundamental Differences Between Coin-Margined and USDT-Margined Contracts

USDT-margined contracts use USDT as the margin and profit/loss measurement unit, while coin-margined contracts are calculated entirely in cryptocurrencies. This seemingly simple difference actually changes the entire logic of capital operation.

For example: if you buy spot Bitcoin with USDT and then open a coin-margined contract, the price fluctuations of the coin will simultaneously affect both your spot holdings and the contract. This means coin-margined contracts inherently have a 1x long exposure—your spot holdings are already a long position. USDT-margined contracts do not have this feature; they completely isolate the profit and loss relationship between spot and contract.

The Risk-Free Arbitrage Logic of 1x Short Coin-Margined Contracts

The classic application of coin-margined contracts is “1x short risk-free arbitrage.” Suppose you purchase $100,000 worth of Bitcoin spot and simultaneously open a 1x coin-margined short contract. Regardless of price movements, your total market value remains locked at $100,000.

Why is this risk-free? Because the funding rate for Bitcoin contracts is positive most of the time. Short contract holders continuously earn this fee, with an annualized yield of about 7%. In other words, you enjoy the funding rate income while avoiding the risk of Bitcoin price decline. As long as you stick to this strategy, your returns can outperform 80% of traditional investors.

Dynamic Advantages of Coin-Margined Margin Adjustment

Coin-margined margins are denominated in coins, but the liquidation price is set at the time of opening the position; fluctuations in coin price do not change the liquidation threshold. This gives traders a hidden advantage.

Considering coin-margined contracts have a built-in 1x long attribute, a 1x long contract will be liquidated if the coin price drops by 50%. Suppose you open a position with $10,000 to buy 10,000 coins; when the coin price drops nearly 50%, you need to add margin. At this point, with the same $10,000, you can buy 20,000 coins. By adding margin, you achieve the advantage of “buying coins at a lower price.”

Specific profit scenario: if you initially hold 10,000 coins and the price drops 50%, you lose $5,000. After adding margin, you hold 30,000 coins. If the coin price recovers to the opening price’s level (67%), these 30,000 coins can fully recover the loss and break even. In contrast, USDT-margined contracts do not enjoy this “low-price margin addition” benefit.

Liquidation Protection Mechanism of Multi-X Coin-Margined Contracts

A 3x coin-margined short contract will approach liquidation if the coin price rises by 50%. For example, if you open a position with $20,000 to buy 20,000 coins, with 10,000 of those coins on a 3x short, when the coin price increases by 50%, you need to add margin.

At this point, you use the reserved 10,000 coins to add margin. Since the coin price has increased by 50%, these 10,000 coins are now worth $15,000, but only need to be supplemented with the equivalent of $10,000 in coins to push the liquidation price higher by a factor of two. This means that with 20,000 coins as collateral, the liquidation price in coin-margined contracts is much higher than in USDT-margined contracts, providing a stronger safety margin.

Why Coin-Margined Contracts Are Suitable for Low-Leverage Trading

All the advantages of coin-margined contracts are based on low leverage. Opening 1x to 3x coin-margined contracts allows you to fully utilize the price advantage when adding margin, enjoy funding rate income, and benefit from higher liquidation protection compared to USDT-margined contracts.

High leverage operations weaken these advantages and may introduce unnecessary risks. Therefore, choosing coin-margined contracts should be paired with low-leverage strategies to maximize capital management and risk control.