You might want to have a go at the wksht before you go. It might be a little intimidating at first but it's not as bad as it looks once you've done it.
A rough calculation based on little knowledge.............
Add half of your SS to your other income: 44K + half of SS
There are 2 income thresholds in the calculation 32K and 44K for married filing
jointly. Since your "income" calculated above exceeds 44K, one guess for
the taxable SS = 6K + 85% (half of SS); the alternate guess is 85% of SS.
You pick the lower of the 2 guesses.
as a check, you might want to input your info into Taxcaster
if the link doesn't work, just google for it.
btw : in your OP, you mentioned that the withdrawal from 401K was
"earned income". I'm a bit puzzled by that since normally it would not be
considered that ...........is that because you were still working this year and the withdrawal was considered a reversal of some of this year's contributions?