86 Ill. Adm. Code 150.1301
Users' Records
Section 150
Section 150.1301 Users'
Records
a) When a user claims that he has paid the Use Tax to his vendor,
he will have sufficient records to sustain this contention in case of an
examination of his records by the Department if the vendor is registered with
the Department as a retailer under the Retailers' Occupation Tax Act or the Use
Tax Act, and if such user has either a receipt for the Use Tax from the vendor
or an invoice from the vendor billing the Use Tax separately from the selling
price of the tangible personal property supplemented with proof in the user's
records that he has paid such invoice including the Use Tax.
b) If the user is obligated to pay the Use Tax directly to the
Department, he must have adequate records to show that he has fulfilled this
obligation and to support his claim (if any) that certain purchases for use are
not subject to the Use Tax.
c) For example, if the user claims that he has paid a tax in
another state with respect to the sale, purchase or use of the same tangible
personal property, the user must have, among his records, a receipt for such
tax from an authorized collector of the tax or other proof that the user has
paid a billing for such tax.