(Some states have no sales tax at all. ALASKA DELAWARE MONTANA NEW
HAMPSHIRE OREGON)
"Retail sales of bullion (with the exception of palladium) and coins in
Michigan are no longer subject to Michigan sales tax."
See, http://www.libertycoinservice.com/faq.htm#q14
See also
http://www.legislature.mi.gov/(zzsjjt55kespij55v0gwd1je)/mileg.aspx?page=getObject&objectName=mcl-205-54s
GENERAL SALES TAX ACT (EXCERPT)
Act 167 of 1933
205.54s Sale of investment coins and bullion; exemptions; definitions.
Sec. 4s.
(1) A sale of investment coins and bullion is exempt from the tax under
this act.
(2) As used in this section:
(a) "Bullion" means gold, silver, or platinum in a bulk state,
where its value depends on its content rather than its form, with a
purity of not less than 900 parts per 1,000.
(b) "Investment coins" means numismatic coins or other forms of
money and legal tender manufactured of gold, silver, platinum,
palladium, or other metal and issued by the United States government or
a foreign government with a fair market value greater than the face
value of the coins.
History: Add. 1999, Act 105, Imd. Eff. July 7, 1999 ;-- Am. 2004, Act
173, Eff. Sept. 1, 2004