since you were married at the end of 2020 you can use the MFS status. another option is to file jointly and use the injured spouse allocation form 8379. if you paid more than 1/2 the cost of keeping up a home for yourself and your child(ren) or stepchild(ren) or foster child(ren) any one of which you can claim as a dependent and who lived with you for more than 6 months in 2020 and you and your spouse lived apart for the last 6 months in 2020 the head of household filing status would be available. the thing with MFS is that if your spouse filed first, you must use the same method for personal deductions - either the standard deduction or itemized deductions that your spouse used. you may want to consult a tax pro to go over your options. MFS is usually the most costly from a tax standpoint.
