Where can I enter Social Security Income for estimating 2026 taxes? I have other income as well.

[eli104]

Just retired in December 2025, but I still have a small side gig (they provide a W-2) along with investment income.

While I found where I can enter my estimated W-2 income and dividends/capital gains... I can't seem to find where to enter my estimated SSA income for Federal and State taxes (I am withholding at 22% due to the investment income, FYI).

[eli104]

Anyone? I'm asking because IF TurboTax is using last year's estimates, they are all wrong. I have only a VERY Small job with a W-2, and ONLY had Social Security for one month.

So using old numbers to estimate (either using the old W-2, or using only one month of SSA) will be very, very wrong!

[Vanessa A]

If you are using the desktop version of TurboTax, you can do this by using the What-If worksheet.  This can be found in forms mode.  After going to forms mode, select Open Forms>>Type in What If>>click on the worksheet and then enter your information.  

[eli104]

Thanks, I'll give that a try... 

.

[eli104]

So I tried the WhatIf worksheet and found that the instructions are a bit confusing. I am not sure whether I can enter (or if they should auto-calculate) some of the data to estimate my SSA earnings and DIV, INT, MISC totals. Best Guess is still my Best Guess on this all... 

Am I doing something wrong?

[AmyC]

First, at the top, check the box to copy column 1 to column 2 to activate the formulas. You will enter the amounts you know, best guess is really all you can do at this point in the year. You can come back throughout the year and make changes to better match your situation. Social Security maxes out at 85% taxable. The program will calculate the taxable amount for you.

Reference:

Calculating taxable Social Security