SF Gate
The state cannabis tax rate will increase from 15% to 19% on July 1, the highest allowed by state law.
Representatives with the California Department of Tax and Fee Administration announced the gross receipts tax hike during a cannabis advisory meeting Thursday. State law requires the department to increase the pot tax rate this year if cannabis excise revenue falls.
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https://www.sfgate.com/cannabis/article/california-cannabis-tax-increase-20305768.php