Recommended by IRS

About Form, 1120 U.S. Corporation Income Tax Return

Information about Form, 1120 U.S. Corporation Income Tax Return, including recent updates, related forms and instructions on how to file.

Form 1120 PDF
PDF version of Form 1120.
Instructions for Form 1120 PDF
Instructions explaining how to file Form 1120.

SOI Tax Stats US Possessions Corporations

International Tax Statistics U.S. Possessions Corporations
About IRS

Form 1120-POL – Final return

Form 1120-POL – Final Return (527 organizations).
General Information
Charities and Nonprofits

Federal tax obligations of nonprofit corporations

Nonprofit status may make an organization eligible for certain benefits, such as state sales, property, and income tax exemptions; however, this corporate status does not automatically grant exemption from federal income tax. To be tax exempt, most organizations must apply for recognition of exemption from the Internal Revenue Service to obtain a ruling or determination letter recognizing tax exemption.
General Information
Charities and Nonprofits

Composite corporate bond rate table

This table provides the monthly corporate bond weighted average interest rates.
General Information
Administrators

S corporation stock and debt basis

The amount of a shareholder’s stock and debt basis is very important.
General Information
Small Businesses

Entities engaged in the corporate practice of medicine

Guidelines for analyzing professional service corporation cases involving the Corporate Practice of Medicine (CPOM).
General Information

Form 1120-POL - Contents of return

Overview of information reported on Form 1120-POL.
General Information
Charities and Nonprofits

Underpayment of Estimated Tax by Corporations penalty

Calculate, pay or remove the underpayment of estimated tax by corporations penalty when you don’t pay estimated tax accurately or on time.
General Information

Instructions for Form 1120-IC-DISC, Interest Charge Domestic International Sales Corporation Return

Form 1120-IC-DISC, Interest Charge Domestic International Sales Corporation Return, is an information return filed by interest charge domestic international sales corporations (IC-DISCs), former DISCs, and former IC-DISCs.
Forms and Instructions

Schedule H (Form 1120), Section 280H Limitations for a Personal Service Corporation (PSC)

Schedule H (Form 1120) is used by personal service corporations that elected to have a tax year other than a calendar year to report if they met the minimum distribution requirement and, if not, the limits on deductions.
Forms and Instructions