(4) Offsets. If a person who has collected excess tax reimbursement on a transaction fails or refuses to refund it to the customer from whom it was collected, the excess tax reimbursement shall be offset against any tax liability of the taxpayer on the same transaction. Any excess tax reimbursement remaining after the offset must be refunded to the customer or paid to the state. The offset can be made when returns are filed, when a determination is issued, or when a refund is claimed. Such offsets can be made only on a transaction by transaction basis. Tax reimbursement collected on a specific transaction can be used only to satisfy a tax liability arising from the same transaction. The "same transaction" means all activities involved in the acquisition and disposition of the same property. The "same transaction" may involve several persons, such as a vendor, a subcontractor, a prime contractor, and the final customer; or a vendor, a lessor, and a series of sublessors. Tax reimbursement can be offset against the tax liability of the taxpayer whether the liability was satisfied by paying sales tax reimbursement to a vendor, paying use tax to a vendor, or paying use tax to the state.
An offset of a taxpayer's own tax liability against tax reimbursement collected from a customer can be made only with respect to transactions in which possession of the property upon which the taxpayer's tax liability is based is transferred, either permanently or temporarily, to the customer, as in the case of construction contracts or leases. A taxpayer such as a repairman or printer who uses shop supplies or printing aids in performing a job for a customer cannot offset the tax liability arising from the use of the supplies or aids against tax reimbursement collected from the customer.
A person who claims that a tax liability on a transaction should be offset against tax reimbursement paid to the state by another person has the burden of proving that tax reimbursement was in fact paid to the state on the same transaction by the other person. In the absence of such proof no offset will be allowed.
The offset allowances explained above are procedural changes mandated by statute and apply to all proceedings pending before the board on and after September 7, 1982.