Client received an IRS CP 2100-A which states the name/TIN (tax ID number) of a few contractors reported on Form 1099 are incorrect.
Client has W-9 of each of these contractors on file.
The notice says no response is needed, but asks the client to just take steps to make sure the name/TIN in future filings will be correct. It also states the possibility of the need to do backup withholding on these contractors.
Questions:
(1) is there a standard procedure that client needs to follow now? Does he have the right or is it legal for him to ask for the social security card of these contractors to confirm the information?
(2) The timing when backup withholding should start started in the notice is vague. So at what point should client start doing backup withholding on these contractors?
(3) is there anything that he needs to do if these contractors do not provide service for him anymore?
Thank you.