86 Ill. Adm. Code 140.1305
When Purpose of Serviceman's Purchase is Unknown
Section 140
Section 140.1305 When
Purpose of Serviceman's Purchase is Unknown
a) If a serviceman registered to remit Service Occupation Tax is
unable to determine, at the time he purchases tangible personal property, how
he will ultimately dispose of such property, he may certify to his supplier
that he is buying all of such tangible personal property for resale and will
thereafter account to the Department for the tax on disposing of such
property. However, no such certificate shall be valid unless the serviceman
who signs it has an active registration or resale number from the Department
and includes such number in such certificate.
b) Upon the ultimate disposition of such tangible personal
property by the serviceman, described in subsection (a) of this Section, he
shall remit to the Department either Service Occupation Tax, including any
applicable local taxes, on the selling or cost price of the tangible personal
property transferred to service customers, or Use Tax for items consumed by him
in conducting his business. Any tangible personal property that the serviceman
sells "over-the-counter" is subject to Retailers' Occupation Tax.