Your tax return and payment for the previous calendar year are due March 1st. You will need to file online.
First, you'll need a user id and password. We'll send this to your tax contact person we have on file. If you're not sure who your contact person is, email us: taxes@oic.wa.gov.
Second, you file online
.
You'll need to establish a user id and password. Send us your:
Email this information to taxes@oic.wa.gov.
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