CFR›Title 18›Chapter I›Part 154›Subpart F ContainsSections 154.501–154.502CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart F—Refunds and Reports Sections 154.501 § 154.501 Refunds. 154.502 § 154.502 Reports. Previous E Subpart E—Limited Rate Changes Next G Subpart G—Other Tariff Changes