All real estate transactions that involve conveyance of property require consideration of Excise Tax. All Excise Taxes assessed on a conveyance must be paid prior to the recording of the conveyance documents, i.e., warranty deed or real estate contract. A real estate excise tax affidavit must be completed and signed by all parties involved in a real property conveyance. To obtain an Excise Tax Affidavit form, call 206- 296-1570.