Small Business Tax Deadlines:
In 2021, your tax calendar should include these important Small business tax dates:
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January 31: Deadline to send W-2s to your employees and 1099-MISCs to independent contractorsThis is also the final day to submit copies of these tax documents to the IRS
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February 28: Deadline for companies to file their information return using a 1099 or 1096 on paperIf filing electronically, the deadline is April 1
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March 15: Partnerships, S corporations, and multimember LLCs must file their return by this date
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April 15: Single-member LLCs, sole proprietors, and C corporations (that follow the standard calendar year for accounting) must file their return by this date
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April 15: First estimated tax payment due
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June 15: Second estimated tax payment due
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September 15: Third estimated tax payment due
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January 15: Final estimated tax payment due