||When a business performs more than one taxable activity for the same products, it reports each activity under the proper classification, but takes the Multiple Activities Tax Credit. For instance, a business that both manufactures and sells a product at wholesale in Washington does not pay both manufacturing and wholesaling Business & Occupation (B&O) tax. A credit is allowed so that B&O tax is paid only once. This also applies to a business that has paid a gross receipts tax to another state.
Completion of the Multiple Activities Tax Credit (MATC) Schedule C is necessary each time the credit is claimed. WAC 458-20-19301 provides additional information on multiple activities tax credit.