An exempt sale without proof is a taxable sale. For a state form, the buyer fills it in and signs it from the emailed link; for a certificate the Department issues, the buyer uploads a photo of it.

Dana My client says this sale is exempt. What does Sundry need?
Sal Proof. In Washington the seller has to prove a sale is exempt. An exempt sale without proof is a taxable sale.
Sal For a state form, the buyer fills it in and signs it from the emailed link. For a certificate the Department issues, the buyer uploads a photo of it.