Business Tax Deadlines

In 2021, your tax calendar should include these important Small business tax dates:

• 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

• February 28: Deadline for companies to file their information return using a 1099 or 1096 on paperIf filing electronically, the deadline is April 1

• March 15: Partnerships, S corporations, and multimember LLCs must file their return by this date

• 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

• April 15: First estimated tax payment due

• June 15: Second estimated tax payment due

• September 15: Third estimated tax payment due

• January 15: Final estimated tax payment due