Taxation for small businesses may be simple or complex, depending on the size and business structure. Specific tax liability for each type of business is different and you should consult your attorney and accountant regarding comprehensive tax planning for your business.
The IRS requires that every employer who pays wages to one or more employees file an application for an Employer Identification Number or EIN.
You may apply online (Form SS-4) or contact the IRS. Internal Revenue Service Center: Toll-free: (800) 829-4933.