@asdfg1234
If you add your numbers and your wife's numbers together on one Capital Loss Carryover Worksheet I don't think you will get the same results as if you calculate the carryovers separately on two separate worksheets. You would be adding amounts from your 2023 tax return to amounts from her 2023 tax return and treating the totals as if they came from one joint 2023 tax return. You can try doing it both ways if you like. It only takes a few minutes to work through a Capital Loss Carryover Worksheet on paper.
If you do it in TurboTax, what ends up on the Capital Loss Carryforward Worksheet 2025 is not the only concern. You have to make sure that the amounts on Schedule D lines 6 and 14 on your 2024 tax return are correct.
And yes, since you and your wife have separate investment accounts, you do have to keep track of how much of the capital loss carryover each of you owns, for the reason that you stated.
You are correct that the worksheets are not sent to the IRS when you file your tax return. But the IRS has enough information from your tax returns to know if you did the calculations correctly. If the IRS questions the carryover amounts on your Schedule D you would have to show them your worksheets to show how you calculated the amounts, so it's not necessarily true that the IRS will never see them.
