Important Tax Dates

January 15, 2026 - 4th Quarter 2025 estimated tax payment due

February 2, 2026 - Due date for employers to send W-2 forms

February 2, 2026 - 1099 forms are sent

April 15, 2026 - Tax day

April 15, 2026 - Deadline to file Form 4868 and request an extension

April 15, 2026 - Deadline to make IRA and HSA contributions for the 2025 tax year

April 15, 2026 - First quarter 2026 estimated tax payment due

June 15, 2026 - Second quarter 2026 estimated tax payment due

September 15, 2026 - Third quarter 2026 estimated tax payment due

October 15, 2026 - Deadline to file your extended 2025 tax return

January 15, 2027 - Fourth quarter 2026 estimated tax payment due

February 2, 2026 - Employers send W-2 forms to employees

February 2, 2026 - Send 1099 forms

March 16, 2026 - Tax returns are due for calendar year Partnerships and S Corporations

April 15, 2026 - Tax returns for calendar year C Corporations are due

September 15, 2026 - Deadline for extended Partnership and S Corporations returns

October 15, 2026 - Deadline for extended C Corporation returns