CFR›Title 7›Subtitle B›Chapter XI›Part 1223›Subpart C ContainsSection 1223.520CorpusDaily eCFRDisplayed edition2026-06-08Last updated2026-06-08 Subpart C—Administrative Provisions Sections 1223.520 § 1223.520 Late payment and interest charges for past due assessments. Previous B Subpart B—Referendum Procedures