Business tax I.D. numbers (or Employer Identification Number/EIN) are issued by the Internal Revenue Service for the purpose of identifying employers. Since business numbers are not issued by the State of New Hampshire*, many small businesses obtain an EIN for use in purchasing merchandise and supplies at wholesale prices. To obtain a tax I.D. number, you will need to fill out Form SS-4. You can find this form on-line (pdf) or at a CPA’s or tax preparer’s office. You may submit the form online, mail it in, or file by telephone at (978) 474-9717.
*The State of New Hampshire does assign State Employer Identification Numbers in order to process State Unemployment taxes.