To find your company's federal tax identification number, call the Internal Revenue Service, check the notice the IRS sent after the initial application for the number or search your banking statements, according to the Houston Chronicle. A company's business tax ID number is also available in previous tax returns and applications for permits and licenses.
As of 2015, the IRS Business and Specialty Tax Line, 800-829-4933, provides a business's tax ID number if you provide essential information such as the name and Social Security number of an authorized person and the address of the business as first listed on the application for the tax ID number, reports the Houston Chronicle. The number is also on the letter that the IRS sent as a response to the original application. This is a computer-generated notice that confirms the business has applied or the tax ID number and provides the number. When your company opened its business bank account, the tax ID number was submitted as part of the application, and the number is henceforth listed on any bank statements.
The tax ID number is required when a company seeks to establish new business relationships with other companies or entities such as vendors or clients, says the Houston Chronicle. Thus, it could also be found on such previous paperwork,.