Printavo Merch allows you to automatically calculate sales tax on each placed order. This is calculated by Printavo, behind-the-scenes using a service called TaxJar. If an item is shipped out of state and there is no economic nexus, 0% sales tax is used.
If you would prefer to manually use a flat rate sales tax, this option is available as well.
When using the automatic option, pickup orders are charged sales tax based on the shop location.
Both sales tax settings can be set when viewing a Merch store and clicking "Settings" at the top center.