2021 Tax Deadlines

  • Jan. 15, 2021: Deadline to pay the fourth-quarter estimated tax payment for tax year 2020
  • Feb. 1, 2021: Deadline for employers to mail out W-2 Forms to their employees and for businesses to furnish 1099 Forms reporting non-employee compensation, bank interest, dividends, and distributions from a retirement plan
  • Feb. 1, 2021: Deadline for financial institutions to mail out Form 1099-B relating to sales of stock, bonds, or mutual funds through a brokerage account, Form 1099-S relating to real estate transactions; and Form 1099-MISC, if the sender is reporting payments in boxes 8 or 14
  • Feb. 1, 2021: Deadline for catching up on unpaid fourth-quarter estimated taxes without additional penalties by filing 2020 tax returns
  • March 1, 2021: Deadline for businesses to mail Forms 1099 and 1096 to the IRS
  • March 2, 2021: Deadline for farmers and fishermen to file individual income tax returns
  • March 15, 2021: Deadline for corporate tax returns (Form 1120-S) for tax year 2020, or to request an automatic six-month extension of time to file (Form 7004) for corporations that use the calendar year as their tax year
  • March 15, 2021: Deadline for partnership tax returns (Form 1065) for tax year 2020 or to request an automatic six-month extension of time to file (Form 7004) for partnerships that use the calendar year as their tax year
  • March 31, 2021: Deadline for businesses to e-file Forms 1099 and 1096 to the IRS, except Form 1099-NEC
  • April 15, 2021: Deadline to file individual tax returns (Form 1040) for the tax year 2020 or to request an automatic extension (Form 4868) for an extra six months to file your return, and for payment of any tax due
  • April 15, 2021: Deadline to file corporate tax returns (Form 1120) for tax year 2020, or to request an automatic six-month extension of time to file (Form 7004) for corporations that use the calendar year as their tax year
  • April 15, 2021: Deadline for filing fiduciary tax returns (Form 1041) or to request an automatic five and one-half month extension of time to file (Form 7004) for estates/trusts that use the calendar year as their tax year
  • April 15, 2021: Deadline for household employers who paid $2,200 or more in wages in 2020 to file Schedule H for Form 1040
  • April 15, 2021: Deadline for first-quarter estimated tax payments for the 2021 tax year
  • June 15, 2021: Deadline for second-quarter estimated tax payments for the 2021 tax year
  • June 15, 2021: Deadline for U.S. citizens living abroad to file individual tax returns or file Form 4868 for an automatic four-month extension
  • Sept. 15, 2021: Deadline for third-quarter estimated tax payments for the 2021 tax year
  • Sept. 15, 2021: Final extended deadline to file S corporation and partnership tax returns for tax year 2020 Forms 1120-S or Form 1065)
  • Sept. 30, 2021: Final extended deadline to file fiduciary tax returns for tax year 2020 (Form 1041)
  • Oct. 15, 2021: Final extended deadline to file calendar year C corporation (Form 1120) and individual tax returns for the year 2020 (Form 1040)
  • Oct. 15, 2021: Deadline for taxpayers who earned $69,000 or less in adjusted gross income (AGI) for tax year 2020 to use Free File to prepare and file their returns