(Wines&Vines) - The California State Board of Equalization (BOE) has published an online sales tax guide for winemakers to help clear up some of the confusion about which winemaking products are exempt from sales tax and how to get a refund from suppliers for any recent purchases.

The guide, which can be found here follows recent news that the BOE, which administers and sets California’s taxes, changed the classification of yeast earlier this year. Yeast used for winemaking had been subject to sales tax for decades until several industry suppliers launched a sustained campaign to get the BOE to change the tax code.