Massachusetts Corporate Tax Deadline 2025: What Happens If You Missed It?
Q: When were Massachusetts corporate tax returns due in 2025? A: For C corporations that filed for an extension, the due date for Form 1120 was October 15, 2025. This is the standard extended deadline for calendar-year corporations. Many Massachusetts businesses rely on extensions to gather documents, finalize financials, or resolve bookkeeping issues. However, once…
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