Sales tax, VAT, and GST all share one trait: the cost of a wrong setup is paid slowly, every transaction, until someone notices.
Configure the foundation
Your tax region, registration details, rates, and agencies have to be correct before a single invoice is issued. Default tax codes then need mapping to the right accounts and items.
Align to your filing periods
A setup that matches your filing obligations turns tax season into a report you pull, not a reconstruction you dread.