Information For...

For you and your family
Standard mileage and other information

Forms and Instructions

Individual Tax Return
Instructions for Form 1040
Request for Taxpayer Identification Number (TIN) and Certification
Request for Transcript of Tax Return


Employee's Withholding Allowance Certificate
Employer's Quarterly Federal Tax Return
Employers engaged in a trade or business who pay compensation
Installment Agreement Request

Popular For Tax Pros

Amend/Fix Return
Apply for Power of Attorney
Apply for an ITIN
Rules Governing Practice before IRS

Line of Business Defined

This term generally refers either to an entire industry or to all components of an industry.  For exemption purposes, a line of business is a trade or occupation, entry into which is not restricted by a patent, trademark, or other means that allow private parties to restrict the right to engage in the business.  It does not include a group composed of businesses that market a particular brand within an industry.  Thus, for example, an organization that served the needs of users of a specific brand of computer or assisted franchise owners of a particular brand of products promoted only a segment of a line of business and so was not exempt under section 501(c)(6).


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