I got married on 2018, i filed jointly married for my taxes for 2018. I added all of my information but did not add my husbands 2018 taxes i remember only asking me for my husbands AGI for 2017 his name and social security number, is this enough? or am i going to have to ammend to add his 2018 tax information.
You will need to amend the 2018 return to add your spouse's information. Wait until the originally filed return is fully processed then see link below for filing instructions.
Note: The IRS has not finalized form 1040X at this time. When they do, you will see the 2018 instructions in the link below.