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Corporate Taxes

Corporate Tax Return Filing Deadline 2026

IMPORTANT NOTICE

CORPORATE TAX RETURN DEADLINE MARCH 17, 2026

March 17, 2026 – Tax returns are due for some business types (partnerships and S corporations). Businesses taxed as partnerships (including multi-member LLCs) and S corporations need to file Form 1065 or Form 1120-S, respectively, by March 17, 2026, if they are a calendar year business.

If you did not prepare the 1099-Misc forms for your subcontractors, we can still do it and process it electronically. Avoid penalties by calling us today! 773-509-0003.

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