代扣会费（checkoff）是在美国一些组织向特定农业商品生产者收取费用，并使用这些基金来进行市场营销及商品的研究工作。这些组织必须采用通用的方法来进行营销，而不能宣传特定的生产者。代扣会费的进程目的是，通过市场推广、增加需求及开发新用途和市场等手段来改善相关产品的市场地位。

根据1996年的《商品、促销、研究及信息法案》（Commodity, Promotion, Research and Information Act of 1996），美国农业部负责监督代扣会费组织的构成。

A checkoff is a bookkeeping mechanism which provides for regular payment of an obligation such as union dues or a tax on sales of agricultural goods which finance a generic commodity marketing program such as the commodity checkoff programs mandated by the United States Department of Agriculture to promote sales of milk, beef, soybeans, or sorghum. Some US states offer income tax checkoffs to contribute voluntarily to various state programs.