Even if you get married on December 31, you will still be married for the entire tax year for your tax return, so that means your choices are to file married filing jointly or married filing separately. You will want to use the address that the IRS and your state need if they need to mail you a letter or a check. You already have two great replies here ihat explain the differences between MFJ and MFS.
HOW TO START A NEW JOINT RETURN USING TURBOTAX
You will not be able to merge two previous TT account to start your new joint return. You can transfer ONE of your 2023 returns into a new return, so choose the most complicated one. The other spouse’s information needs to be entered manually. The first name you enter will be the “primary” taxpayer——and in subsequent years you need to keep the names in that order—do not try to change the order of the names.
When you enter the primary spouse’s information in My Info, you have to answer the question "Were you married?" If you click the button for Married, then a drop down will appear that asks, "Do you want to file this return together with your spouse?" Then you choose YES to file a joint return. You enter your spouse's information into My Info. Whenever you are entering income information there should then be a spot for you and for your spouse's income information. WATCH for the names as you enter income on the screens.
When you prepare a joint return you include all the information for both spouses on the SAME tax return. Include all of your personal information, all of your income from every source, all dependents (if any), all credits and deductions for both of you. You get ONE refund with both names on it.
HOW TO START A NEW RETURN TO FILE MARRIED FILING SEPARATELY
When you enter your own information in My Info, you have to answer the question "Were you married?" If you click the button for Married, then a drop down will appear that asks, "Do you want to file this return together with your spouse?” Your answer needs to be NO. Then it will ask for information about your spouse—-their name and SSN which you must enter. EACH spouse has to file their own separate return. And you have to follow all of the rules which include that if one of you enters itemized deductions, the other one must also itemize. Or…you both use standard deduction. If you are in a community property state there are additional rules and more information to enter.
If I am filing a separate return why do I have to list my spouse’s information on my return?
Even if you file separate returns (the worst way to file) you each have to list each other's SSN's and some other information on your own tax return. The IRS can then cross check to make sure you are not "double dipping" for itemized deductions, dependents, etc.
If you are in a community property state, there is more information that will be needed.
Community property states: AZ, CA, ID, LA, NV, NM, TX, WA, WI
https://ttlc.intuit.com/questions/1901162-married-filing-separately-in-community-property-states
https://turbotax.intuit.com/tax-tips/marriage/five-tax-tips-for-community-property-states/L4jG7cq7Z
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
