๐ Category: Taxes Made Simple โ Business Entities
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Key S-Corp Filing Deadlines in 2025
S corporations must file several IRS forms to stay compliant and avoid penalties. The most common include the annual corporate tax return (Form 1120S), quarterly payroll tax filings (Form 941), annual unemployment tax return (Form 940), and K-1 distributions to shareholders.
- Deadline: March 17, 2025 (since March 15 is a Saturday)
- What to File: IRS Form 1120S + Schedule K-1s for each shareholder
- Extension Option: File Form 7004 by March 17 to extend to September 15, 2025
If your S-Corp has employees, you must withhold and report income tax, Social Security, and Medicare taxes using IRS Form 941:
| Quarter |
Reporting Period |
Filing Deadline |
| Q1 |
Jan 1 โ Mar 31 |
April 30, 2025 |
| Q2 |
Apr 1 โ Jun 30 |
July 31, 2025 |
| Q3 |
Jul 1 โ Sep 30 |
October 31, 2025 |
| Q4 |
Oct 1 โ Dec 31 |
January 31, 2026 |
- Form: IRS Form 940
- Deadline: January 31, 2025
- Grace Period: File by February 10 if taxes are paid in full and on time
โ ๏ธ Late Filing Penalties
- Form 1120S: $220 per shareholder per month (2024 rate), up to 12 months
- Form 941: 5% of unpaid tax per month (up to 25%)
- Form 940: Similar penalties if filed late or with unpaid taxes
๐ Extension Instructions
To request an extension for filing Form 1120S, submit Form 7004 by the original due date (March 17, 2025). Note: This does not extend the time to pay any taxes owed.
๐ Reminders
- Distribute Schedule K-1s to shareholders by March 17, 2025
- Ensure payroll tax deposits are made on time
- Use Zoho Expense to document all expenses, especially payroll-related costs, for IRS audit readiness
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IRS-Compliant Recordkeeping
Use Zoho Expense to:
- Record payroll costs, tax payments, and wage reimbursements
- Tag quarterly filings by quarter and form (e.g., "Q1 941 Filing")
- Attach PDF copies of filed forms and confirmation pages
- Export audit-ready reports for 1120S or state agency review
โ Service Availability Note
Gbooksโ assistance with S-Corp filing deadlines may be limited based on your service plan. Please contact your account representative to confirm coverage.
๐ค Related Articles
๐งพ FAQ
What are the main S-Corp deadlines in 2025?
March 17 (1120S + K-1), Jan 31 (Form 940), and quarterly 941 filings due April 30, July 31, October 31, and Jan 31 next year.
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