If the additional information is not provided within 60 days after the date on which the request is made, the election, consent, or refusal may, at the discretion of the Commissioner, be held invalid.
26 C.F.R. § 18.1379-2
If the additional information is not provided within 60 days after the date on which the request is made, the election, consent, or refusal may, at the discretion of the Commissioner, be held invalid.
26 C.F.R. § 18.1379-2