Line 2a
Enter amounts received as alimony or separate maintenance pursuant to a divorce or separation agreement entered into on or before December 31, 2018, unless that agreement was changed after December 31, 2018, to expressly provide that alimony received isn’t included in your income. Alimony received is not included in your income if you entered into a divorce or separation agreement after December 31, 2018. If you are including alimony in your income, you must let the person who made the payments know your social security number. If you don’t, you may have to pay a penalty. For more details, see Pub. 504.
If you are including alimony payments from more than one divorce or separation agreement in your income, enter the total of all alimony received on line 2a.