September 24th, 2023 Posted in Budget, Accounting

Taxation: A Guide to 1065, 1120, and 1120S Forms

At SRG Advisors LLC, we understand that taxation can be a complex and often confusing subject. For business owners, choosing the right tax form is crucial to ensure compliance and minimize liabilities. In this article, we'll shed light on three important tax forms: the 1065, 1120, and 1120S. By the end of this guide, you'll have a clearer understanding of which form is right for your business.

1. Form 1065: Partnership Return

What is Form 1065?
Form 1065, officially known as the "U.S. Return of Partnership Income" is used by partnerships to report their income, deductions, and distributions to the IRS. A partnership is defined as an association of two or more individuals or entities who share the profits and losses of a business.

Key Features of Form 1065:
- Pass-through taxation: Partnerships themselves do not pay federal income tax. Instead the income deductions and credits are passed through to the individual partners, who report this on their personal tax returns.

- Information return: Form 1065 is primarily an information return, providing the IRS with a snapshot of the partnership's financial activities.

2. Form 1120: Corporate Income Tax Return

What is Form 1120?
Form 1120, or the "U.S. Corporation Income Tax Return," is used by C corporations to report their income, deductions, and tax liability. C corporations are separate legal entities from their owners.

Key Features of Form 1120:
- Separate entity taxation: C corporations are subject to double taxation. The corporation pays taxes on its income and shareholders also pay taxes on dividends received.

- Various schedules and attachments: Depending on the complexity of the corporation's financial activities, additional schedules, and forms may be required to accompany Form 1120.

3. Form 1120S: S Corporation Income Tax Return

What is Form 1120S?
Form 1120S, officially known as the "U.S. Income Tax Return for an S Corporation," is used by S corporations to report their income, deductions, and tax liability. S corporations are a unique entity type that combines the limited liability of a corporation with the pass-through taxation of a partnership.

Key Features of Form 1120S:
- Pass-through taxation: Similar to partnerships, S corporations pass income, deductions, and credits through to their shareholders who report this on their personal tax returns.

- Single taxation: Unlike C corporations, S corporations are not subject to double taxation. They are only taxed at the shareholder level.

- Limited liability: Shareholders enjoy limited liability protection, making S corporations an attractive option for small to medium-sized businesses.


Choosing the right tax form for your business is crucial to managing your tax liability effectively. Form 1065 is ideal for partnerships, while Form 1120 is used by C corporations, which are subject to double taxation. Form 1120S on the other hand is tailored to S corporations, offering the benefits of pass-through taxation and limited liability. At SRG Advisors LLC, we are here to help you navigate the complexities of tax forms and ensure your business remains compliant with the IRS. Feel free to reach out to us for personalized assistance and expert guidance on your tax needs.

*Disclaimer: This article is intended for informational purposes only and does not constitute legal or financial advice. Consult with a qualified tax professional for advice specific to your situation.*

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