Green Book

Ask Us

The Green Book is a guide for ACH payments either originated or received by the federal government.

Questions concerning non-federal government ACH payments should be directed to the National Automated Clearing House Association (NACHA) or a local ACH association in your part of the country or your financial institution. FMS is unable to answer questions regarding non-federal government ACH payments.


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You may also e-mail your inquiries to us at: greenbook@fms.treas.gov

   Last Updated:  March 14, 2014