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


有關特定企業的資訊,請見行業/職業網頁(Industries/Professions Web page)。

每一州都有關於開辦和經營企業的額外規定。有關開辦和經營企業的州級規定,請參閱您的州網站(your state's website)。

也請參閱小型企業管理局的開辦企業步驟(Steps to Starting a Business)。