I don't know why they did it that way. If you want to efile and only have SS income you can add $1 of bank interest. Make up a fake 1099-Int for it and put $1 in box 1. It won't affect your return.
Enter a 1099-Int under
Federal
Wages & Income
Interest and Dividends
Interest on 1099-INT - Click the Start or Update button
Enter it manually. Don't type the bank name or try to import it.
At the bottom pick - Change How I enter my Form
Then on the next screen pick - I'll Type it in Myself
