@tschettini Sorry, I do not understand your issue. Are you saying you are going to tell your plan administrator who will distribute the 2022 RMD to Not withhold any federal income taxes from the distribution? And you want to make estimated taxes for the distribution yourself?
All you need to do is tell the plan administrator what percentage of taxes you want withheld from the distribution. eg 5%, 10%, 15%, etc. The taxes withheld on a Form 1099-R are treated the same way as taxes withheld from wages on a W-2, they are deemed to have been paid equally for all 12 months of the tax year.
