Married in 2021, congratulations! If you file a married filing jointly return, which is likely beneficial to you, then you can claim the property taxes and mortgage interest on the joint return. If you are filing married single, then she can claim the condo, not you or both of you.
So, the key is to figure out which is more beneficial to you and do it that way. Remember, married on New Year's Eve, before midnight is like you were married all year to the IRS!
