The U.S. government uses a federal tax identification number to identify businesses and companies. The federal tax ID number is also known as a federal employer identification number (FEIN). Any business with employees or that operates as a corporation or partnership is required to have an federal tax ID number. There are a number of ways to find a federal tax ID number for a business you own or for one you are working with.
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Look for the notice sent to you by the IRS when you applied for the federal tax ID number. The IRS sends an electronic notice after you apply for one.
Review company documents and financial information. Business tax returns are required to have the federal tax ID number on them.
Contact your financial institution. Banks require a social security or federal tax ID number when opening a business account.
Call the IRS at 800-829-4933 and choose the option to speak to a customer service representative. After correctly answering the IRS security questions, the representative will be able to provide your existing federal tax ID number to you.
Contact the accounting, purchasing or credit department of a company you are working with. Most companies have a standard credit form they use which often features the company's federal tax ID number.
Visit the company website. Some companies include their federal tax ID number in the financial and credit information posted on their website.
Review any documentation received from the company. Tax documents such as W-2 or 1099 forms will have the business federal tax ID number on them.
Search for a company's federal tax ID number by using a database such as FEIN Search (feinsearch.com). The website offers a free trial search when you register on their website.
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