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Internal Revenue Manual Part 25. Special Topics · 2026-10-03 edition · updated 2026-10-04 · United States
Current programming for the CP 01 will generate a copy of the notice to a POA that is on file. If sufficient documentation has been received to validate a POA, but it is not yet on file, then issue the POA a closing letter. This ensures the taxpayer’s right to retain representation and the POA’s right to be informed.
Address Letter 4674C to both taxpayers when issuing Letter 4674C under the primary SSN if the valid filing status for the impacted tax year(s) is Married Filing Joint (MFJ). For tax years with an Invalid Joint Election (IJE), MFJ scheme, or tax years not filed MFJ, address Letter 4674C to each impacted taxpayer individually.
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