You don't have to figure the taxable portion of Social Security--Turbo Tax figures that for you based on the rest of your income.
Put your ENTIRE Social Security, from your 1099-SSA, here:
1. Click Federal
on the left-hand side menu.
2. Click Income
across the top.
3. Scroll down to Retirement Plans and Social Security and click Show more.
4. Click Start
or Revisit by Social Security (SSA-1099, RRB-1099).