Washington Tax Deadlines
No state income tax. Review business and other tax obligations with the state agency.
Washington Department of Revenue
https://dor.wa.gov
individual deadline
Due: N/A
Form: N/A
No state individual income tax in Washington.
Sole Proprietorship deadline
Due: N/A
Form: N/A
No state individual income tax in Washington.
Partnership deadline
Due: N/A
Form: N/A
No state individual income tax. Other business taxes may apply.
S Corporation deadline
Due: N/A
Form: N/A
No state individual income tax. Other business taxes may apply.
C Corporation deadline
Due: N/A
Form: N/A
No state individual income tax. Other business taxes may apply.
LLC deadline
Due: N/A
Form: N/A
No state individual income tax. Other business taxes may apply.
Nonprofit deadline
Due: N/A
Form: N/A
No state individual income tax. Other business taxes may apply.
Estimated Tax Payments
View all quarterly estimated payment due dates for Washington.
FAQ
Does Washington conform to federal due dates?
Washington does not levy an individual income tax, so most income tax deadlines are not applicable.
Where can I file Washington tax forms?
Visit Washington Department of Revenue at https://dor.wa.gov for official forms and e-file options.