2026 Federal Income Tax Deadlines: Business Owners Take Note

As we plan ahead for 2026, here are the key federal filing deadlines to keep on your compliance calendar:

• January 15, 2026 – Q4 2025 Estimated Tax Payment
• March 16, 2026 – S-Corporation & Partnership Returns (Form 1120-S & 1065)
• April 15, 2026 – Individual & C-Corporation Returns
• September 15, 2026 – Extended S-Corp & Partnership Returns
• October 15, 2026 – Extended Individual Returns

Proactive planning prevents last-minute scrambling, penalties, and cash flow surprises. For small and mid-sized businesses, coordinating tax strategy with bookkeeping and advisory services can significantly improve year-round financial clarity.

If you're looking for strategic tax planning and preparation support in West Michigan, CB Accounting is here to help.

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