Form 1120-S (2025), U.S. Income Tax Return for an S Corporation Completed Form Examples and Samples
View detailed, filled-out examples and samples of IRS Form 1120-S for the 2025 tax year. Our guide provides a clear walkthrough on how to complete the U.S. Income Tax Return for an S Corporation, covering income, deductions, and ordinary business income calculations. Perfect for small business owners and tax professionals.
Form 1120-S (2025) Example – Consulting S Corporation
How this form was filled:
This example shows a completed Form 1120-S for a fictional consulting firm, 'Innovate Solutions Inc.' for the 2025 tax year. It details gross receipts of $800,000 and total deductions of $480,000, resulting in $320,000 of ordinary business income. Key deductions include officer compensation, salaries, and rent. This income passes through to the shareholder(s) via Schedule K-1.
Information used to fill out the document:
- Corporation Name: Innovate Solutions Inc.
- Employer Identification Number (EIN): 98-7654321
- Business Address: 123 Tech Avenue, Suite 100, Silicon Valley, CA 94043
- Date of S Corp Election: 01/15/2020
- Business Activity Code: 541611 - Management Consulting
- Total Assets: $250,000
- Gross Receipts: $800,000
- Cost of Goods Sold: $0
- Gross Profit: $800,000
- Compensation of Officers: $120,000
- Salaries and Wages: $150,000
- Rent: $60,000
- Taxes and Licenses: $15,000
- Depreciation: $20,000
- Advertising: $25,000
- Total Deductions: $480,000
- Ordinary Business Income: $320,000
- Filing Date: 03/15/2026
What this filled form sample shows:
- Demonstrates the calculation of Ordinary Business Income (Line 21) for a service-based business with no cost of goods sold.
- Includes common deductions for a small corporation, such as Officer Compensation, Salaries and Wages, and Rent.
- Shows the correct use of a Business Activity Code for a consulting firm, a critical detail for IRS classification.
- Illustrates a completed first page, providing a clear sample of how to report key financial totals for an S Corp tax return.
- The resulting income flows through to shareholders on Schedule K-1 (not shown), which is a key feature of S Corporations.
Form specifications and details:
| Form: | Form 1120-S, U.S. Income Tax Return for an S Corporation |
| Tax Year: | 2025 |
| Filing Year: | 2026 |
| Use Case: | Consulting Firm operating as a single-shareholder S Corporation |
Created: January 29, 2026 07:41 AM
