To open an online store, do I need to apply for a tax ID number or can I use my social security number?

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Opinions expressed by Entrepreneur contributors are their own.

As a general rule, if your business is an entity other than a sole proprietorship (e.g., corporation, limited liability company, partnership), you will need a separate tax ID number for the entity.  If you are a sole proprietor, you may use your social security number.  Confim with a knowledgeable tax lawyer or CPA to determine what's right for your business.

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