BIT在计算统一交易账户有效保证金时将采用折损率机制计算，某币种折损率越高，则该币种作为担保品的转化率越低。
基于各币种流动性考量，BIT将数字资产划分为如下等级。
|
等级 |
币种 |
折损率 |
| 1 | USD | 0% |
| 2 | USDT | 0.1% |
| BTC | 2% | |
| ETH | 2% | |
| 3 | BCH | 5% |
| TRX | 15% | |
| 4 | ADA | 15% |
| BNB | 15% | |
| DOGE | 15% | |
| LINK | 15% | |
| LTC | 15% | |
| XRP | 15% | |
| AVAX | 20% | |
| DOT | 20% | |
| TON | 80% | |
| 5 | ETC | 30% |
| FIL | 30% | |
| GALA | 30% | |
| MANA | 30% | |
| MATIC | 30% | |
| MKR | 30% | |
| NEAR | 30% | |
| SAND | 30% | |
| SHIB | 30% | |
| 6 | AAVE | 40% |
| COMP | 40% | |
| CRV | 40% | |
| SUSHI | 40% | |
| UNI | 40% | |
| XLM | 40% | |
| YFI | 40% | |
| AXS | 50% | |
| CHZ | 50% | |
| FTM | 50% | |
| GRT | 50% | |
| SOL | 50% | |
|
7 |
其他币种 |
100% |
举例：
假设用户A账户资产如下所示，BCH折损率为5%，那么当用户BCH权益为100，USD指数价格为300时，有效担保品价值为28500 USD。
| 币种 | 数量/权益 | USD指数价格 | 币种折损率 | 折合USD担保品价值 |
| BCH | 100 | 300 | 5% | 28500 |