offset，英文合同常用词，“抵消”。

例句1

In any case the Installment Payment can be used to offset the amount of the credits to which the Buyer may be entitled under this Agreement or others that the Parties subscribe. Offset may only be made when there is written consent of the Seller authorizing the offset. 

无论在何种情况下，分期款都可用于抵消本协议下买方有权享有的应向买方或者协议双方规定的他人支付的金额。只有经卖方书面同意批准方可抵消。

例句2

In any case the Buyer could retain or offset of the Installment Price any sum that the Buyer has the right to collect from the Seller for a Claim of Indemnity or any other concept.  

无论在何种情况下，买方都可从分期款中保留或抵消买方因补偿申请或任何其他原因，有权从卖方收取的任何金额。