2021 Excise tax return due dates | Washington Department of Revenue

Sales tax now applies to some services

Starting October 1: Some business services are now subject to retail sales tax, as required by state law, ESSB 5814. When you buy these services, vendors should add sales tax to your bill. If you sell these services, you should begin collecting retail sales tax. Learn more about Services newly subject to retail sales tax.

Read the information below to find out when your tax return is due. If the due date falls on a weekend or legal holiday, the due date is extended to the next business day.

Monthly Quarterly Annual

Monthly due dates

January return

Due date: 02/25/21
9% penalty begins: 02/26/21
19% penalty begins: 04/01/21
29% penalty begins: 05/01/21

February return

Due date: 03/25/21
9% penalty begins: 03/26/21
19% penalty begins: 05/01/21
29% penalty begins: 06/02/21

March return

Due date: 04/25/21
9% penalty begins: 04/27/21
19% penalty begins: 06/02/21
29% penalty begins: 07/01/21

April return

Due date: 05/25/21
9% penalty begins: 05/26/21
19% penalty begins: 07/01/21
29% penalty begins: 08/03/21

May return

Due date: 06/25/21
9% penalty begins: 06/26/21
19% penalty begins: 08/03/21
29% penalty begins: 09/01/21

June return

Due date: 07/25/21
9% penalty begins: 07/27/21
19% penalty begins: 09/01/21
29% penalty begins: 10/01/21

July return

Due date: 08/25/21
9% penalty begins: 08/26/21
19% penalty begins: 10/01/21
29% penalty begins: 11/02/21

August return

Due date: 09/25/21
9% penalty begins: 09/28/21
19% penalty begins: 11/02/21
29% penalty begins: 12/01/21

September return

Due date: 10/25/21
9% penalty begins: 10/26/21
19% penalty begins: 12/01/21
29% penalty begins: 01/04/22

October return

Due date: 11/25/21
9% penalty begins: 11/30/21
19% penalty begins: 01/04/22
29% penalty begins: 02/01/22

November return

Due date: 12/25/21
9% penalty begins: 12/28/21
19% penalty begins: 02/01/22
29% penalty begins: 03/01/22

December return

Due date: 01/25/22
9% penalty begins: 01/26/22
19% penalty begins: 03/01/22
29% penalty begins: 04/01/22

Quarterly due dates

Quarter 1, 2021 return

Due date: 04/30/21
9% penalty begins: 05/01/21
19% penalty begins: 06/02/21
29% penalty begins: 07/01/21

Quarter 2, 2021 return

Due date: 07/31/21
9% penalty begins: 08/03/21
19% penalty begins: 09/01/21
29% penalty begins: 10/01/21

Quarter 3, 2021 return

Due date: 10/31/21
9% penalty begins: 11/02/21
19% penalty begins: 12/01/21
29% penalty begins: 01/04/22

Quarter 4, 2021 return

Due date: 01/31/22
9% penalty begins: 02/01/22
19% penalty begins: 03/01/22
29% penalty begins: 04/01/22

Annual 2021 due date

Annual due dates are listed below for the Combined Excise Tax Return.

Due date: 04/15/22
9% penalty begins: 04/16/22
19% penalty begins: 06/01/22
29% penalty begins: 07/01/22

Looking for the due date for the 2020 Annual return? Learn more.