@BridgetP wrote:
I think he probably owes some part of that total amount,
As far as the IRS and the tax law are concerned, you and your husband are equally responsible for paying the total amount of tax. There is nothing on the tax return that indicates that one or the other of you owes a certain portion of the total tax.
Since the tax return and the tax law are not going to tell you how to divide up the tax, you and your husband have to decide how to divide the total tax between you. You can use any method that you both agree on. You have been given two suggestions here for how to do it.
1. Divide the tax in proportion to your individual incomes. For example, if you made 60% of the total income, then you pay 60% of the total tax.
2. Figure out how much tax each of you would have paid if you had filed separate tax returns as married filing separately. But you will almost certainly find that the sum of the tax on the two separate returns adds up to more than the tax on your joint return. So you still have to do a proportional allocation. Divide the tax on the joint return that you filed in the same proportions as the tax on the dummy separate returns.
@BridgetP wrote:
I have paid all the taxes for 2022.
You probably did not pay all the tax. Your total tax is not the amount that you owed when you filed your tax return. Your total tax is the amount on Form 1040 line 24 in your joint tax return. Most of that tax should have been paid during the year, either by withholding or by estimated tax payments. If your husband had a job where he got a W-2, the tax that was withheld from his pay (shown in box 2 on his W-2) is tax that he paid.
