Just curious, does AvaTax address this? They discuss soda taxes on their website.
""Soda tax
Soda taxes are slowly sweeping the nation. The Navajo Nation decided in 2014 to imposed higher taxes on sugary drinks and ""minimal-to-no-nutritional value food."" Special taxes on sweetened beverages took effect in Berkeley, California in January 2015 and in Vermont six months later.
On November 8, voters in four cities approved proposed soda taxes, and two days later, the Cook County Council did the same. Philadelphia's soda tax takes effect on January 1, and similar taxes take effect in Boulder, Colorado, Oakland, California, and Cook County, Illinois on July 1, 2017.
Pundits predict more cities and states will soon follow suit, now that soda taxes have been successfully enacted in these areas. Certainly there is interest. Alabama Governor Robert J. Bentley has been calling for a tax on soft drinks for years and is likely to renew those efforts in 2017."" - https://www.avalara.com/blog/2016/12/01/2017-sales-tax-changes/