My wife and I applied for Social Security Retirement payments on May 5th, but as yet have not received call back for meeting. Since I was born in 1952 I am planning on taking 1/2 of the payment my wife is due until I turn 70 in 2022. I want all of my payments until I start getting my payment to withheld for taxes. Also we are planning on going back 6 months before this date to get benefits. So:
1) How do I file withholding on W-4 to get entire amount of my spousal benefit taken as taxes?
2) Since this involves going back into December 2020 for a benefit do I need to revise 2020 taxes or since it won't be paid until 2021 will it count as withholding or taxes for 2021 or 2020 (since that is when the check will be issued).
I am trying to pay extra taxes in 2021 since I am making some IRA conversions to Roth accounts in 2021.
