Do you mean you entered other income but did not enter your Social Security income? That was a mistake. You should have entered your SSA1099 if you had other income. You are supposed to enter the SSA1099 exactly as it appears and let the software do the calculations about the SS and how much of it (if any) is taxable.
If you want to amend to make sure the IRS adjustment and the calculations you get with a 1040X agree:
Amend 2017
https://ttlc.intuit.com/questions/1894381-how-to-amend-change-or-correct-a-return-you-already-filed?...
**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.**
