40 CFR §264.1315

1. (a)Interest. In accordance with 31 U.S.C. 3717(a)(1), delinquent e-Manifest user fee accounts shall be charged a minimum annual rate of interest equal to the average investment rate for Treasury tax and loan accounts (Current Value of Funds Rate or CVFR) for the 12-month period ending September 30th of each year, rounded to the nearest whole percent.
   1. (1)E-Manifest user fee accounts are delinquent if the accounts remain unpaid after the due date specified in the invoice or other notice of the fee amount owed.
   2. (2)Due dates for invoiced or electronically billed fee amounts shall be 30 days from the date of the electronic invoice or bill.
2. (b)Financial penalty. In accordance with 31 U.S.C. 3717(e), e-Manifest user fee accounts that are more than 90 days past due (i.e., not paid by date 120 days from date of invoice) shall be charged an additional penalty of 6% per year assessed on any part of the debt that is past due for more than 90 days, plus any applicable handling charges.
3. (c)Compliance with manifest perfection requirement. A manifest is fully perfected when:
   1. (1)The manifest has been submitted by the owner or operator of a receiving facility to the e-Manifest system, as either an electronic submission or a paper manifest submission; and
   2. (2)All user fees arising from the submission of the manifest have been fully paid.