7 CFR § 925.141 - Late payments.
(a) The committee shall impose a late payment charge of 5 percent on the unpaid balance on any handler whose assessment has not been received in the committee's office, or the envelope containing the payment legibly postmarked by the U.S. Postal Service, within 45 days of the invoice date shown on the handler's assessment statement.
(b) In addition to that specified in paragraph (a) of this section, the committee shall impose an interest charge on any handler whose assessment payment has not been received in the committee's office, or the envelope containing the payment legibly postmarked by the U.S. Postal Service, within 45 days of the invoice date. The rate of 1 1/2 percent per month shall be applied to the unpaid balance and late payment charge for the number of days all or any part of the assessment specified in the handler's assessment statement is delinquent beyond the 45 day period.
(c) The committee, upon receipt of a late payment, shall promptly notify the handler (by registered mail) of any late payment charge and/or interest charge due as provided in paragraphs (a) and (b) of this section. If such charges are not paid, or the envelope containing payment is not legibly postmarked by the U.S. Postal Service, within 45 days of the date of such notification, late payment and interest charges as provided in paragraphs (a) and (b) of this section will accrue on the unpaid amount.