Capital gains tax filing system now available

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Washington State Department of Revenue

Feb. 13, 2023

Capital gains tax filing system now available

The online reporting system for the Capital Gains excise tax is now live. Once registered, taxpayers can voluntarily file their tax return, make a payment, or request a filing extension in advance of the statutorily mandated April 18, 2023 due date. If the Washington Supreme Court finds that capital gains tax to be unconstitutional, any tax payments received will be promptly refunded with interest.

Background

In March of 2022, the Douglas County Superior Court ruled in Quinn v. State of Washington that the capital gains excise tax (ESSB 5096) does not meet state constitutional requirements and, therefore, is unconstitutional and invalid. The State has appealed the ruling to the Washington Supreme Court. While the appeal is pending, the agency was granted a stay of the Douglas County ruling. Pending the final decision from the Washington Supreme Court, the stay does preserve the agency's ability to effectively administer and implement the tax and meet statutory obligations, including accepting tax payments.

How-to videos and additional resources

Check out these capital gains tax resources available on our website:

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