in order to file a joint return for a year you must be married on the last day of that year. so, if your divorce was final in 2023, you can file a joint return for 2022 but you are not required to do so. if your divorce was final by 12/31/2022 you cannot file a joint return for 2022.
and no, Turbotax does not have a PDF to send to your ex.
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if you lived apart for the last 6 months of 2022 and paid more than 1/2 the cost of keeping up a home for yourself and your child(ren)who lived with you for more than 6 months then you may be able to file as head of household.
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giving your ex complete control of the return filing could result in him claiming the entire refund for himself even though you might be due a portion. For example, if you had more than enough taxes paid in but he didn't he could use your overpayment to pay taxes he owes because he did not pay enough in. About the only way around this is for you to file a paper return that he has signed and sent to you for filing. It is criminal for him to file a joint return without your consent.
