bulletin Internal Revenue›Introduction
SEC. 10. DEFINITION OF TERMS
Internal Revenue Bulletin 1999-49 · 2026-10-03 edition · updated 2026-10-04 · United States
Employer Generally, an employer is a person or organization for whom a worker performs a service as an employee. The employer has the right to direct and control the worker. A person or organization paying wages to a former employee after the work ends is also considered an employer.
Employee One who performs services for an employer.
EIN Employer Identification Number that has been assigned by IRS.
File For purposes of this procedure, a file consists of all magnetic/electronic records submitted by an employer or transmitter.
Special Character Any character that is not a numeric, an alpha or a blank.
Taxpayer May be either an Employer Identification Number (EIN); a Social Security Number (SSN); an IRS Identification Individual Taxpayer Identification Number (ITIN) issued to an alien individual; or an IRS Adoption Number (TIN) Taxpayer Identification Number(ATIN) assigned to children who are in the process of being adopted.
Transmitter Person or organization preparing and/or submitting magnetic/electronic file(s).
Transmitter A five-character alpha/numeric number assigned by IRS to the transmitter prior to actual filing magnetiControl Code cally/electronically. This number is inserted in Positions 319–323 of your files and must be present before (TCC) the file can be processed. An application Form 4419 must be filed with IRS to receive this number.
PART B. MAGNETIC MEDIA/ELECTRONIC SPECIFICATIONS
Get a plain-English answer with a citation back to this text.
Ask AI about this code