HMRC Alcohol Duty (UK) Calculator

UK alcohol duty is charged per litre of pure alcohol (LPA) in a batch, at a rate that depends on the beverage type, its ABV band, and whether it qualifies for a reduced draught rate. Beverage type covers beer, still cider, sparkling cider, spirits or spirit-based products, wine including sparkling wine, and other fermented products, since HMRC applies different rate schedules to each.

ABV is rounded down to the nearest 0.1%, matching HMRC's own rounding rule, so a reading of 5.24% is treated as 5.2%. Volume can be entered in litres, UK gallons, US gallons, or the traditional beer cask units: firkin, kilderkin, barrel, hogshead, butt, and tun. A draught product qualifies for the reduced draught duty rate, but only when its ABV is below 8.5%; above that threshold, the standard rate applies regardless of packaging.

The core formula is Total Duty = Litres of Pure Alcohol (LPA) x Duty Rate (GBP per LPA). LPA is calculated as Volume (in litres) x (ABV / 100). The total duty amount is rounded down to the nearest penny, following the same downward-rounding convention HMRC applies to the ABV figure. A step-by-step view in Settings substitutes the entered values into each stage of this calculation, and a rate period selector switches between duty rate schedules as they change.

A 40-litre batch of beer at 5.2% ABV contains 40 x (5.2 / 100) = 2.08 litres of pure alcohol. The applicable GBP-per-LPA duty rate for beer at that ABV band is then applied to the 2.08 LPA figure to reach the total duty owed.

Estimating UK alcohol duty liability matters across a range of production and planning scenarios, for anyone producing or selling alcoholic beverages in the United Kingdom who needs a quick reference for duty amounts.

• Homebrewing: Estimating the duty that would apply to a 40-litre batch of homebrew beer at 5.2% ABV shows the tax implications of scaling up to commercial production.
• Micro-Brewery Planning: Duty on a full barrel (36 UK gallons) of session ale at 3.8% ABV factors tax costs into pricing and profit margin calculations.
• Cider Production: The duty difference between still cider and sparkling cider at 6.0% ABV shows the cost impact of carbonation on tax liability.
• Wine Import and Distribution: Duty on a standard wine shipment feeds into landed costs and retail pricing that accounts for UK tax obligations.
• Spirits Distilling: Duty on a batch of gin at 40% ABV shows the significant tax component in spirits pricing.
• Draught Rate Evaluation: Comparing standard and draught duty rates for a keg of beer at 4.5% ABV quantifies the savings from qualifying for reduced draught rates.
• Business Forecasting: Running calculations across different batch sizes and ABV levels builds annual duty projections for financial planning and budgeting.
• Educational Reference: Experimenting with different beverage types, ABV levels, and volumes shows how each variable affects total duty owed, with the step-by-step calculation view breaking down each stage of the formula for full transparency.

This tool is intended for informational and educational purposes only. It does not provide financial, investment, or tax advice. The amounts and payments shown are estimates and may not reflect actual figures. Results are not guaranteed and may vary based on individual circumstances. Always consult a qualified financial advisor before making any financial decisions.