The following was taken from CSMS#67236626:

Automated Commercial Environment (ACE) filers who are approved to participate in Periodic Monthly Statement (PMS) can pay duties for shipments entered or released during the previous calendar month. For 2026, those dates are available for reference in the attached file.

For more information on PMS, please download a copy of the Periodic Monthly Statement User guide available here: Periodic Monthly Statement | U.S. Customs and Border Protection.

Please reach out to your RIM representative if you have any questions.