Overview
Brews to Barns is a federal and state legislative proposal that encourages and rewards breweries to donate their spent grain — the main byproduct of brewing — for agricultural uses. The program would provide an excise tax credit to brewers who supply this valuable material for agricultural use.
American brewers generate about 4.7 million metric tons of spent grain annually. Many brewers, especially small and independent ones, already donate their spent grain — a valuable feed and soil additive — to local farmers. It’s a partnership that reduces farm input costs, keeps valuable organic matter out of landfills, and strengthens local economies. Still, a significant amount of spent grain is wasted, often ending up in landfills where there is no commercial benefit and contributes to greenhouse gas emissions.
A Policy Solution
To encourage more of these beneficial donations, the Brewers Association supports an excise tax credit tied to the dry weight of spent grain donated. The proposal is simple: when brewers give their byproducts to farmers and ranchers, they would earn a credit against their federal and state excise tax bill(s).

Benefit to brewers
Currently the value on the open market of spent grain is roughly $40 per wet ton, which breaks down into approximately 8 cents per dry weight pound. Using these numbers, even a small brewer would see a significant benefit to their bottom line, helping to offset rising costs of inputs.

Benefit to agriculture
By lowering feed costs with donations, the credit should boost donations, helping farmers and ranchers weather volatile markets. Feed prices hit their ninth-highest mark on record in March 2025, making affordable inputs especially critical.

Benefit to the environment
When spent grain decomposes in landfills, it releases methane — a greenhouse gas many times more potent than CO₂. Just one ton of spent grain in a landfill produces the equivalent of 513 kilograms of CO₂, roughly the same as driving a gas-powered car from Phoenix to Chicago. Redirecting this material significantly cuts emissions.
Why Now?
Small brewers are being squeezed from multiple directions: inflation, tariffs and supply chain pressures, state budget shortfalls, new and proposed regulatory mandates, and increasing operating costs. Farmers are dealing with global price shocks in feed and inputs. Meanwhile, many states are searching for practical, bipartisan policies that support local economies and reduce environmental impacts and create maximum value from waste streams.
The Brews to Barns Act gives small businesses breathing room, helps farmers manage costs, and keeps organic waste out of landfills. Most importantly, it encourages collaboration between two sectors that are both central to the American economy and way of life.

A Win–Win–Win
Passing a tax credit for spent grain donations isn’t just good policy — it’s common sense. Brews to Barns supports small brewers who keep our communities vibrant, farmers and ranchers who keep America fed, and an environment that belongs to all of us.
Brews to Barns Federal Tax Credit Calculator
Estimate your annual federal excise tax credit from spent grain donations.
Disclaimer: The tax credit cannot exceed your total federal excise tax liability and is capped at $35,000/year. Additional savings could be realized if similar legislation passes at the state level. The 67 lbs/BBL dry weight figure is an average based on BA data — actual savings will vary by recipe. This calculator is for illustrative purposes only and does not constitute tax advice.
Brews to Barns State Tax Credit Calculator
Estimate your potential state excise tax savings if Brews to Barns legislation passes in your state.
Disclaimer: State-level Brews to Barns legislation has not yet passed. These figures are estimates of potential savings if similar legislation were enacted in your state. The credit is capped at $30,000/year and cannot exceed your total state excise tax liability. The 67 lbs/BBL dry weight figure is an average based on BA data — actual savings will vary by recipe. State excise tax rates reflect barrel-based rates and may not capture all state-specific structures. This calculator is for illustrative purposes only and does not constitute tax advice.