Small Business Tax Tools LLC

What is the penalty fee for filing in 2026?

The IRS penalty for filing Form 1120-S late is now $255 per shareholder, per month.

If you have a 3-shareholder corporation and you're 2 months late, that’s a $1,530 fine just for the delay.

Make sure to hit the March 16, 2026 deadline or file for an extension to protect your bottom line!

⏰ Business Tax Deadline – March 16

If you own an S-Corporation or Partnership, your 2025 business tax return is due March 16, 2026.

Even if your business had little or no activity, the IRS still requires the return to be filed. Missing the deadline may result in penalties for each shareholder or partner.

If your documents are not ready yet, an extension can still be filed to give you additional time.

Small Business Tax Tools LLC/NW Tax Choices
Helping small businesses stay compliant and avoid IRS penalties.

📞 Contact us today if you need help filing your return or requesting an extension.

If you miss the deadline to file Form 1120-S, and F1065 (September15), the IRS charges a monthly penalty—up to 12 months—based on the number of shareholders/partners. 📅 For 2024 returns, it's $235 per shareholder/partner per month.
💡 Penalties grow with interest.

✅ Avoid it: File on time.

More details on IRS.gov

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Explore the tools and resources available on our website to elevate your business success. Don't miss out on the expert guidance that can simplify your financial journey today.