how long does it take for the irs to process a non filers form?
Mail or fax the completed IRS Form 4506-T to the address (or FAX number) provided on page 2 of Form 4506-T. If the 4506-T information is successfully validated, tax filers can expect to receive a paper IRS Verification of Non-filing Letter at the address provided on their request within 5 to 10 days.