Tax Due Dates

Tax due dates are crucial for individuals and businesses alike, as they ensure compliance with tax regulations and help avoid penalties. Meeting these deadlines allows taxpayers to manage their finances effectively and plan for future expenses. Staying informed about due dates also helps in maintaining a good relationship with tax authorities. Below are the key tax due dates to keep in mind.

2026 Tax Due Dates

September 2026

September 15th: Partnerships - Last day for calendar-year partnerships to file for 2025 income tax return (form 1065) if they obtained an automatic six month filing extension.
September 30th: Estates and Trusts - Last day for filing 2025 income tax return (form 1041) for calendar year estates and trusts that obtained an automatic 5 1/2 month filing extension.

October 2026

October 15th: Individuals - Last day for filing 2025 income tax return (form 1040 or form 1040-SR) by calendar year individuals that obtained a six month extension.
October 15th: C Corporations - Last day for filing 2025 income tax return (form 1120) by c corporations that obtained an automatic six month extension.

November 2026

November 2: Employers' taxes - Employers of non-agricultural and non-household employees must file return on form 941 to report income tax withholding and FICA taxes for the third quarter of 2025

December 2026

December 10: Individuals - Report November tip income of $20 or more to employers (Form 4070).
December 16: Calendar-year corporations - Pay the fourth installment of 2024 estimated income taxes, completing Form 1120-W for the corporation’s records.
December 16: Employers - Deposit Social Security, Medicare and withheld income taxes for November if the monthly deposit rule applies.
December 16: Employers - Deposit nonpayroll withheld income tax for November if the monthly deposit rule applies.