Internal Revenue Service
Electronic Federal Tax Payment System®
Apply for an EIN
Oregon Department of Revenue Online
Oregon Secretary of State Business Guide
Forms and Instructions:
W-9: Request for Taxpayer Identification Number and Certification
W-4: Employee’s Withholding Certificate
OR-W-4 (2022): Oregon Withholding Statement and Exemption Certificate
Form 2553: Election by a Small Business Corporation (S-Corp election)
Form 9465: Installment Agreement Request
W-7: Application for IRS Individual Taxpayer Identification Number
Circular 230
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