TTB Distilled Spirits Plants — Federal Permit and Tax Compliance

Every distillery in the United States — from a large commercial bourbon producer to a craft gin startup — must obtain a federal permit and operate within a tax compliance framework governed by 27 CFR Part 19. The rule covers every aspect of running a Distilled Spirits Plant (DSP): the federal basic permit, bonding requirements, production and processing operations, gauging spirits for excise tax determination, and paying the federal excise tax before products leave the bonded premises. The central concept is deferred taxation: spirits may be held "in bond" (tax unpaid) while aging or awaiting sale, but the tax must be paid before any product enters domestic commerce.

Current Rule (2026)

What This Rule Does

Every distillery — from a large commercial bourbon producer to a craft gin startup — operates under a federal permit and tax compliance framework that has been in place, in various forms, since Prohibition's repeal. 27 CFR Part 19 governs every aspect of operating a Distilled Spirits Plant (DSP): obtaining the federal basic permit, posting a bond to cover unremitted taxes, conducting production and processing operations, gauging spirits for tax determination, paying the federal excise tax before products leave the bonded premises, and maintaining the records that document everything from fermentation through bottling.

The framework's central concept is the bonded premises — the qualified area of a DSP where spirits may be stored without the federal excise tax having been paid yet. Spirits on bonded premises are "in bond" — tax liability has been established but payment is deferred. No spirits may leave bonded premises for domestic consumption without the tax being paid first. This deferral mechanism allows distillers to age spirits (often for years) without paying the tax until the product is ready for sale, reducing the capital burden of aging-intensive categories like bourbon and Scotch-style whiskey.

The federal excise tax rate on distilled spirits is $13.50 per proof gallon (one gallon at 100 proof / 50% alcohol by volume). However, the Craft Beverage Modernization Act (first enacted in 2017, made permanent in 2020) established reduced rates for domestic distillers: $2.70 per proof gallon on the first 100,000 proof gallons removed annually, and $13.34 per proof gallon on the next 22.13 million proof gallons. These reduced rates have driven the explosion of craft distillery openings in the United States since 2017 — more than 2,500 DSPs were operating by the mid-2020s.

Key Provisions

Permit and Registration (Subpart D)

• § 19.72 — Any person who intends to establish a DSP must first register with TTB and obtain approval; no distilled spirits operations may begin without an approved notice of registration (qualifying as a "basic permit" under the Federal Alcohol Administration Act, 27 U.S.C. § 204)
• § 19.75 — The notice of registration must include a description of the plant location, the type of operations to be conducted (production, storage, processing, or combination), and the bonded premises boundaries
• § 19.91 — Changes to operations (adding or removing activity types, changing premises boundaries, transferring ownership) require notification to or approval by TTB before taking effect

Bonds (Subpart F)

• § 19.151 — Every DSP must furnish a bond before beginning operations; exceptions exist for very small distillers or those who prepay all taxes before withdrawing spirits
• § 19.152 — Two basic bond types: the operations bond (covers the tax liability on spirits already on bonded premises) and the withdrawal bond (covers tax liability on spirits being removed from bond under deferred payment)
• § 19.161 — Operations bond coverage must equal the maximum tax liability at any one time on spirits stored on bonded premises; the bond protects the government's interest in the unremitted tax

Production (Subpart L)

• § 19.291 — Proprietors authorized to produce distilled spirits must conduct all production operations at approved locations on bonded premises; operations must comply with TTB regulations at all stages
• § 19.296 — Fermented materials used to produce spirits must be produced on bonded premises or received from a qualified source; the fermentation record documents quantity and source of all fermenting material
• § 19.297 — A proprietor may produce spirits from any suitable material consistent with the standard of identity for the type of spirit being made
• § 19.301 — Distillation must be conducted in a continuous system (no batch distillation from separate disconnected vessels unless specifically authorized)
• § 19.303 — May add caramel (for color only) to rum or brandy; may add oak chips to spirits during maturation
• § 19.304 — Production gauge: all spirits must be gauged (quantity measured and proof determined) as soon as reasonably possible after production; the production gauge establishes the taxable quantity

Processing — Bottling and Blending (Subpart N)

• § 19.341 — Processing operations (bottling, blending, adding water to reduce proof, denaturation) must be performed by a proprietor specifically authorized for processing; operations must be on approved bonded or taxpaid premises
• § 19.346 — Obscuration (the hiding of true proof by dissolved solids from coloring, flavoring, or blending) must be determined so the correct amount of tax is applied
• § 19.348 — Products that don't meet a standard class identity (blended spirits with flavoring, cordials, cocktails) require TTB formula approval before production
• § 19.352 — Spirits must be bottled from tanks certified on the notice of registration; after any filtering or adjusting, the bottling tank gauge documents the quantity and proof before bottling begins
• § 19.354 — A bottling or packaging record must be prepared for each batch, documenting the spirits used, proof, and bottles produced

Taxes (Subpart I)

• § 19.221 — The subpart covers the taxation of distilled spirits and all procedures for payment of taxes by DSP proprietors
• § 19.222 — 26 U.S.C. § 5001 imposes the excise tax on all spirits produced in or imported into the United States; the standard rate is $13.50 per proof gallon; reduced rates apply to domestic producers qualifying under the Craft Beverage Modernization Act
• § 19.223 — The distiller of spirits is primarily liable for the tax; every person who owns, possesses, or has a lien on untaxpaid spirits is also jointly liable
• § 19.225 — Before withdrawing any spirits from bond, the proprietor must gauge the spirits and determine the tax; no exception applies for small quantities
• § 19.229 — Two payment methods: prepayment (tax paid before spirits leave bond) and deferred payment (tax paid on a periodic basis after removal; requires a withdrawal bond)
• § 19.235 — Deferred payment filers may qualify for annual (if annual tax liability ≤ $50,000 and all prior returns timely), quarterly (if annual liability ≤ $50,000), or semimonthly (default) return periods; large distillers with annual liability over a threshold must file semimonthly and pay by electronic funds transfer

How It Affects You

If you want to open a distillery: The federal DSP permit is not the same as a state distillery license — you need both. The federal registration process requires submitting a Notice of Registration (TTB Form 5110.41) describing your location, operations, and bonded premises, followed by a bond filing. TTB typically processes applications within 60 days. You cannot produce, store, or process any spirits until the registration is approved. Many startup distillers don't realize the federal permit comes first; state licenses and local zoning approvals often run in parallel and can take longer. Budget for professional help on the bond — the operations bond must be calculated to cover the full tax liability on spirits you expect to have in bond at any one time.

If you operate a craft distillery (under 100,000 proof gallons annually): The reduced excise tax rate of $2.70/proof gallon on your first 100,000 proof gallons is a massive benefit — it's 80% below the standard rate. The rate applies to domestic production and is calculated annually. To qualify, you must be a "domestic producer" (not just an importer). Keep your annual proof gallon removals below 100,000 to stay in the lowest bracket.

If you operate at scale (over 100,000 proof gallons annually): You almost certainly file semimonthly returns and may be subject to electronic funds transfer requirements. The deferred payment system means your withdrawal bond must be sized to cover the tax on everything you remove from bond in a semimonthly period — the bond calculation is an ongoing compliance item as production scales.

If you bottle spirits produced by another DSP (alternating proprietor or contract bottling): Alternating proprietor arrangements and contract production relationships are common in the industry. The proprietor that removes spirits from bond is responsible for the tax. If you receive spirits in bulk from another DSP, you must track the quantity and proof received, prepare dump/batch records for any blending, and gauge the product before bottling. TTB's formula requirements for blended products apply to the bottler, not just the original distiller.

Statutory Authority

This rule implements:

• 26 U.S.C. § 5001 (IRC Chapter 51) — Imposes the federal excise tax on distilled spirits; establishes the standard rate and authorizes reduced rates; basis for all bonded premises and tax payment provisions
• 26 U.S.C. § 5005 — Persons liable for distilled spirits tax (distillers, proprietors, and possessors of untaxpaid spirits)
• 26 U.S.C. § 5171 — Requirement to qualify as a DSP (registration and permit requirement); no person may produce, bottle, or process distilled spirits without qualifying with TTB

Recent Rulemakings

• 89 FR 87939 (2024) — Most recent amendment; updated several provisions to align with current trade practice and TTB guidance; addressed alternating proprietor arrangements and formula approval procedures
• 82 FR 1120–1123 (2017) — Package of related rulemakings implementing the Craft Beverage Modernization and Tax Reform Act provisions; established the regulatory framework for reduced excise tax rates for small domestic distillers and updated return filing procedures

Recent Developments

• Craft distillery boom and regulatory adaptation: The U.S. craft distillery industry grew from under 100 licensed DSPs in 2010 to over 2,500 by the mid-2020s. TTB has adapted its Part 19 administration to accommodate small-scale producers — particularly through streamlining DSP qualification procedures, simplifying formula approval for new spirits categories, and updating alternating proprietor rules that allow multiple producers to share production facilities. The craft distillery growth has made Part 19 relevant to a much larger and more diverse population of licensees.
• Craft Beverage Modernization Act (CBMA) permanent extensions: The Tax Cuts and Jobs Act of 2017 temporarily reduced federal excise tax rates for small domestic distillers (to $2.70/proof gallon on the first 100,000 proof gallons from the standard $13.50). The Consolidated Appropriations Act of 2020 made these reduced rates permanent. TTB updated Part 19 filing and return procedures to implement the permanent reduced rates, and the 2024 rulemaking (89 FR 87939) made additional conforming amendments.
• Hemp-derived spirits and cannabinoid beverages: The 2018 Farm Bill's legalization of industrial hemp created regulatory uncertainty for distilled spirits containing hemp-derived cannabinoids (CBD, CBG). TTB has issued guidance clarifying that hemp ingredients in distilled spirits must be approved food-grade ingredients and that formulas containing hemp must go through TTB's formula approval process. The intersection of TTB's alcohol regulation with FDA's food additive authority for hemp-derived CBD creates a multi-agency compliance challenge for producers.
• Flavored whiskey and formula approval volume: TTB's formula approval process for flavored and specialty spirits has faced processing baclog as the variety of craft distillery expressions has multiplied. TTB has implemented expedited formula approval pathways for certain categories (e.g., natural flavor additions meeting specific criteria) to reduce processing timelines. Formula approval wait times — which can extend months for complex applications — have been cited as a business constraint for small DSPs launching new products.

Gauging Manual (27 CFR Part 30)

The TTB Gauging Manual at 27 CFR Part 30 is the measurement methodology underpinning the entire distilled spirits excise tax system. Federal excise tax on spirits is assessed by the proof gallon — one liquid gallon of spirits at exactly 60°F containing 50% ethyl alcohol by volume. Accurately measuring proof (twice the percentage of ethyl alcohol by volume) requires standardized, traceable measurement procedures; without them, every tax calculation would be contestable. Part 30 specifies exactly how that proof determination is made, who must use these procedures, and how to handle spirits whose alcohol content is difficult to measure by standard means.

• § 30.21 — Instruments required: proof determination must be made using a NIST-traceable hydrometer and thermometer from the TTB-approved list; instruments must be calibrated against national standards; instruments showing signs of damage or calibration drift must be replaced before use; TTB periodically updates the approved instruments list as measurement technology advances
• § 30.22 — Hydrometer proof determination: the standard method — a calibrated hydrometer is immersed in a representative sample of the spirits at a measured temperature; the hydrometer reading (apparent proof at the observed temperature) is corrected to 60°F using TTB's official proof and tralle correction tables; the corrected value is the true proof at 60°F used for all tax calculations
• § 30.23 — Thermometer requirements: the thermometer used with the hydrometer must be NIST-traceable and readable to the nearest 0.1°F; thermometers and hydrometers must be matched (used together in the same reading), because temperature and proof readings interact in the correction calculation; readings must be taken in a stable temperature environment to avoid measurement drift
• § 30.31 — Determination to nearest 0.1 degree: all proof determinations must be carried to the nearest 0.1 degree of proof (e.g., 80.1 proof, not 80 proof); the 0.1-degree precision requirement prevents rounding abuses that could systematically under-report proof for tax purposes; the precision also reflects the practical measurement capability of TTB-approved instruments
• § 30.32 — Proof obscuration — spirits with dissolved solids: some spirits contain dissolved solids — sugars, coloring agents, flavor extractives from barrel aging — that interfere with hydrometer accuracy by making the liquid denser than it would be from alcohol content alone; spirits containing more than 400 milligrams of solids per 100 milliliters are classified as obscured and cannot be gauged by hydrometer alone; the additional procedure requires: (1) evaporating a measured volume to remove alcohol, (2) weighing the dry solids, (3) applying the obscuration correction factor; the corrected proof accounts for the density contribution of dissolved solids; this procedure is most commonly applied to liqueurs, cream spirits, and heavily extracted bourbons and rums
• § 30.36 — Specific gravity method: an alternative measurement method using a calibrated pycnometer (a precision volumetric flask) to determine specific gravity; specific gravity is then converted to proof using TTB's conversion tables; used when hydrometer readings are technically impractical (very small samples, very high proof above the range of standard instruments); must produce equivalent results to the hydrometer method within specified tolerances
• §§ 30.41–30.56 — Volume measurement: proof determination alone is insufficient — excise tax requires both proof and volume to compute proof gallons; Part 30 specifies approved methods for measuring the volume of spirits in tanks, barrels, and packages; tank gauging uses calibrated tank tables approved by TTB; barrel gauging uses official barrel gauging tables for different barrel sizes and fill levels; package gauging relies on nominal fill volumes verified by weight

The 2024 update (89 FR 87946) modernized Part 30's instrument approval process, updated the list of approved measurement instruments to reflect current laboratory technology, and clarified procedures for spirits categories with non-standard compositions (flavored spirits with high total dissolved solids, cream spirits, and products with multiple obscuring agents). The core proof obscuration methodology — in place since the 1980s — remained unchanged, as did the 60°F/50% definition of a proof gallon that dates to the earliest federal alcohol tax statutes.

For DSP operators: Part 30 gauging is not optional compliance — it is the measurement event that determines your federal excise tax liability. Proof and volume readings taken for tax purposes must be made using the Part 30 methods, recorded in required gauging records (retained per Part 19), and available for FSIS [TTB] inspection at any time. Errors in gauging — even good-faith measurement mistakes — can create tax underpayments that TTB will assess with interest and penalties. If your spirits contain high dissolved solids (most aged bourbons and rums do not reach the 400mg/100mL threshold, but liqueurs typically do), verify whether your products are classified as obscured under § 30.32 and whether your staff is trained on the obscuration procedure.

Pending Action

TTB's unified regulatory agenda includes a proposed rulemaking to update and consolidate Part 19 provisions that have been amended piecemeal over many years — a long-promised "modernization" of the distilled spirits plant regulations that would align the regulatory text with current TTB operating procedures and trade practices. Timing for this NPRM has been repeatedly delayed; watch TTB's regulatory agenda for progress. For hemp/CBD-containing spirits, FDA's resolution of its food additive framework for hemp-derived CBD will affect what TTB can approve in DSP formulas — the two agencies are working toward coordinated guidance. Craft DSP operators facing formula approval delays should monitor TTB's formula approval guidance page for expedited review pathways for common natural flavor additions.