What % (7%, 10%, 12%) I should select on Form W-4V telling Soc. Sec. how much to withhold from my monthy SS check? $35,500 for the total year. I know 85% is taxable.

That's up to you.  If you have a lot of other income you might want the most taken out.  Or increase your withholding on other income.  Or do like me (I have 0 taken out of SS) and send in quarterly estimated payments to cover SS and interest and dividends that don't take out withholding.  

Volvogirl, 

Thank you.  So how do you estimate the 1/4ly tax to send in?  Is there a penalty for missing the date?  Greatly appreciate your response!  Sandy

There are two thing you haven't shared:

• Other income
• Filing Status

However, if you are sure that 85% of your Social Security will be taxed:

• It would put you at 
  • 22% for a single individual
  • If married it would be
    • 12% up to $89,450
    • and 24% on higher income

If I've misunderstood your question, and this does not completely answer it, please contact us again and provide some additional details.

JohnB5677,

Thanks so much! Yes, I am married, and we file jointly.  Your message made me understand that I should be looking not just at the Soc. Sec.  amount but the total income, including pensions and RMD's, dividends, etc.    How stupid can I be?  Thanks for getting me to look at the big picture.  I was just focused on SS and that form.

Thanks so much!  Sandy