Here's the problem.
According to the IRS, you are both unmarried, and you will file single, unless one of you qualifies to file as HOH. However, because Washington is a community property state, and extends community property rights to RDPs, state law requires that you divide your federal income using community property rules even though you are filing single.
@xmasbaby0
See the instructions for form 8958.
https://www.irs.gov/pub/irs-pdf/f8958.pdf
This is not a situation that Turbotax handles well. There is a blog post you should start with.
https://turbotax.intuit.com/tax-tips/marriage/tax-tips-for-registered-domestic-partners-and-unmarrie...
You may need to call customer support and ask to speak to an expert familiar with using form 8958 for RDPs in a community property state. Or maybe one of the other Champs is more familiar with this situation.
