... taken out automatically, but as yet, have not requested Federal taxes be taken out. When planning our budget, I need to know if the Federal taxes will be on the full amount of his monthly benefit, or the amount after Medicare premiums are deducted. Since he plans to continue working for at least this year, we know his SS benefits will definitely be taxed. The answer to this will help us decide at what percentage to request the Federal tax deduction. Thank you for any help you can give us