State Form Finder

Form SS-4 (EIN)

Official IRS Application for Employer Identification Number.

IRS Form 1065 (Partnership Return)

Official IRS U.S. Return of Partnership Income. Used by partnerships to report income, gains, losses, deductions, credits, and other information from the operation of the partnership. The partnership itself does not pay federal income tax; instead, each partner reports their share on their individual returns.

IRS Form 1120 (C Corporation Tax)

Official IRS U.S. Corporation Income Tax Return. Used by C corporations to report income, gains, losses, deductions, and credits, and to figure the income tax liability of the corporation. Covers all domestic corporations subject to federal corporate income tax.

IRS Form 1120-S (S Corporation Return)

Official IRS U.S. Income Tax Return for an S Corporation. S corporations use this form to report income, gains, losses, deductions, credits, and other items. The S corporation is a pass-through entity — each shareholder reports their share of corporate income on their individual returns.

IRS Form 2553 (S Corporation Election)

Official IRS Election by a Small Business Corporation (S Corp Election). Required for corporations that wish to be taxed as S corporations under Subchapter S of the Internal Revenue Code. Must be filed timely to take effect for the intended tax year.