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How can I obtain a federal tax ID number?

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How can I obtain a federal tax ID number?
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It's either your soc. sec. number if you are your own small business, or you get one assigned to you when you apply for a business license.
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personal tax id = social security number. . business tax id = begins with a 36- in Illinois.
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It's your social security number in most cases.
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If you are looking for the tax ID of a former employer, it should be on your W2 form. Just ask. If you need to obtain one, you simply file. You can do it on line.
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