I am married and filed taxes separately for me and my spouse. I claimed child and dependent care expenses on my tax return. We got email from IRS saying " we didn't allow the amount claimed as child and dependent care expenses on page 2 of your tax return. ========>>Correct; your filing status must be single, married filing jointly, head of household or qualifying widow(er) with a dependent child to claim the expenses.
You're not eligible to claim child and dependent care expenses because your filing status is Married/Filing Separately. However, you may be eligible for the child and dependent care credit if your filing status is single, married filing joints, head of household or qualifying widower with a dependent child"
I owe IRS now around $200. At this point, can I file amended tax return - married filing jointly? or do I have to file it next year paying the money for IRS I owe now?=======>>>>>>>Yes you can; as you said, you can file 1040X to file your return as MFJ from MFS at any time within 3 years from the due date of the separate return or returns. This does not include any extensions. A separate return includes a return filed by you or your spouse claiming married filing separately, single, or head of household filing status. On the contrary, once you file a joint return, you cannot choose to file separate returns for that year after the due date of the return.