I turned a CA HSA tax issue into a stress/anxiety spiral
I have a bad habit of causing myself unnecessary stress and anxiety, and this HSA situation has become my latest rabbit hole.
I live in CA and have had an HSA since 2021. Until recently, I had no idea that CA (and NJ) do not follow the federal tax treatment of HSAs when it comes to investment income. I only learned this because I was planning to liquidate my old employer HSA investments and transfer the cash to my current employer’s HSA to simplify things.
Since then, I’ve gone down the Google/Reddit/AI rabbit hole. I’ve learned that a lot of people either have no idea this rule exists, their CPA never mentioned it, or they find it incredibly confusing because HSA custodians don't issue 1099s for state-level reporting. Even after using TurboTax all these years, I honestly do not recall ever being asked a direct question during the state interview that would have led me to report HSA dividends or gains for CA.
I understand that a lack of tax forms or the fact that this is widely missed does not change the law. I’ve figured out what I need to do to track my cost basis and report things correctly going forward, but now I’m stuck on how to handle the past.
I’m debating whether to amend prior CA returns just to report and pay tax on HSA dividends from previous years. Since I’ve used TurboTax every year, technically I could amend, but I’m trying to figure out the logistical reality of fixing this versus the mental burden of worrying about it.
For anyone in CA or NJ who discovered this years later and decided to amend prior returns, what was the experience actually like once you started? Were there any unexpected issues with amending state-only returns, entering the income without standard tax forms, calculating interest or penalties, or figuring out how to pay the FTB? Did amending ultimately help you mentally move on from it, or did it just create more stress once you opened the door?
At this point, the mental burden of knowing there is a discrepancy is bothering me more than the actual tax amount probably would, so I'd love to hear from anyone who has walked this path.