Did you enter your Social Security SSA-1099? Was it on 1040 line 5a and 5b? Up to 85% of SS is taxable depending on your other income. If the IRS says more of your SS is taxable it is because they increased some other income on your return like the taxable amount of any 1099R retirement you got. Or you left some income off. Turbo Tax is a self prepared return and you need to check it over close before you file.
