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Need Some Deductions for 2012?

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10 Oddball Tax Deductions

11 Most Overlooked Tax Deductions

Updated for 2012

The Purpose of Tax Identification Numbers

Tax identification numbers are used by federal, state, and local tax authorities to identify tax reporting entities such as individuals, businesses, nonprofit organizations, and trusts and to facilitate tax administration.

An individual's tax identification number is his/her social security number.

Tax Identification Numbers for Businesses

Here are the most common tax identification numbers used by businesses:

Sole Proprietors:

If you're a sole proprietor, you need an Employer Identification Number (EIN) if any of the following apply:

Other reasons an EIN may be required:

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Tax Identification Numbers: Employer Identification Number for a Sole Proprietorship; Where to Get Your Employer Identification Number

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