https://taxexemptauthority.com/tax-exempt-sales-tax-rules-by-sector/
Tax-Exempt Sales Tax Rules for Nonprofits and Organizations
Sales tax exemptions for nonprofits and tax-exempt organizations operate through a patchwork of state-level statutes rather than a single federal rule,...
tax exempt salesfor nonprofitsrulesorganizations
https://legislature.maine.gov/legis/bills/bills_128th/billtexts/SP022601.asp
SP0226, LD 664, item 1, An Act To Exempt Gold and Silver Coins and Bullion from Sales Tax
summaryThis bill provides a sales tax exemption for sales of gold and silver coins and bullion.
https://quickbooks.intuit.com/learn-support/en-ca/taxes/when-to-use-sales-tax-e-exempt-vs-z-zero-rated-tax/01/260620/highlight/true
Solved: When to use Sales Tax "E" Exempt vs "Z" Zero Rated Tax
when to usesales tax