Use T.D. TTB–199, 89 Fed. Reg. 101073, especially DATES and § 5.143(c)(16).
TTB published T.D. TTB–199 on December 18, 2024 and made the new federal standard of identity for American single malt whisky effective January 19, 2025.
Verified against the complete Federal Register final rule and the official TTB announcement.
Keep December 18, 2024 as the publication date and January 19, 2025 as the effective date. A five-year label transition does not postpone the rule’s effective date. Use the live eCFR for current compliance wording.
The controlling final rule separately states its publication and effective dates and amends 27 CFR 5.143 to add the category.
Created September 2, 2026 to close the exact-date hold on the contemporary timeline.
Claim
TTB published T.D. TTB–199 on December 18, 2024 and made the American single malt whisky standard effective January 19, 2025.
Evidence judgment
The complete controlling final rule states both dates and amends the federal standard of identity. The official TTB announcement independently repeats the effective date.
Boundary
The five-year label transition does not postpone the effective date. Current technical guidance should be checked against the live eCFR.
Readiness decision
Ready for Drafting with Strong evidence and High confidence.