信赖利益是指一方基于对另一方将与其订约的合理信赖所产生的利益。信赖利益一词源于大陆法的损害赔偿制度和英美法上的违约救济制度。如在买卖合同中，被欺诈方的信赖利益是基于对对方合理的信赖而对订立合同做的必要准备而支出的费用，信赖利益的赔偿原则就是使善意的被欺诈方的地位恢复到订约之前。“信赖利益损失”即与之相关的损失。

“信赖利益损失”的英文很简单，直译就行，可省略利益二字，因为损失中已暗含为“利益损失”，因此可译为Reliance loss。其相关英文释义如下：Reliance loss：Also known as wasted expenditure. It is one of the losses that may be recovered for breach of contract. It refers to the expenses incurred by the claimant in reliance of the contract being performed. The aim of damages for reliance loss is to put the claimant in the position he would have been in had the contract never been made.

与“信赖利益损失”相关的是信赖赔偿Reliance damages。

Reliance damages is the measure of compensation given to a person who suffered an economic harm for acting in reliance on a party who failed to fulfill their obligation.

所谓“期待利益损失”，是指当事人一方违反合同或故意、过失地损害他人财产或财产权利，使权利人（也即受害人）在正常情况下本来可以实现和取得的财产利益未能实现和取得，或者由于损害行为而减少。

同样，“期待利益损失”也可以直接译为“Expectation loss”。The usual measure of damages for breach of contract. It refers to the innocent party's loss of a bargain, such as the profits that it would have expected to receive had the contract been performed, less the costs it would have incurred to earn that profit. The aim of expectation loss damages is to put the innocent party in the same position as if the contract had been performed.

以下为相关双语示例：

关于损失的类型，大陆法系一般分为实际损失和可得利益损失，英美法系则分为信赖利益损失和期待利益损失。

As for the types of losses, losses are generally divided into actual losses and losses of available benefits under the civil law system, while divided into reliance interest losses and expectation interest losses under the common law system.