# 费用

OmniBridge的费用结构包含两部分：桥接费和目标链Gas费，这种费用结构确保资产转移的快速可靠；

* 桥接费：按转账金额的百分比收取，我们对所有用户将会收取0.3%的桥接费
* 目标链Gas费：用于目标链，我们将代币发送到用户地址所消耗的Gas费；

例如：假如用户想要在源链Ethereum上用1个ETH兑换目标链Bitcoin上的BTC时，桥接费是：
\
1 ETH \* 0.003 = 0.003 ETH
\
跨链系统将会使用0.997去兑换目标链的BTC，假如实际兑换得到0.1BTC，目标链GAS是 0.001 BTC，那么用户将会收到的BTC数量是：
\
0.1 BTC - 0.001 BTC = 0.099 BTC


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