To embed, copy and paste the code into your website or blog: On May 4, 2021, Washington Governor Jay Inslee signed Senate Bill 5096 ("SB 5096") into law, creating a capital gains tax regime in Washington. The bill has had a brief, but colorful journey so far. It appears that the journey is continuing. Will Washington's capital gains tax be here to stay? At this point, it is anyone's guess. SB 5096 was originally introduced to the Washington State Senate on January 6, 2021. It was passed by the Senate on March 6, 2021, after a hearing in the Senate Committee on Ways and Means, three readings and some floor amendments. The bill's passage margin in the Senate was narrow, receiving 25 affirmative votes and 24 negative votes.