Important Tax Deadlines
Ensure timely compliance and strategic tax planning for the 2026 fiscal year with our comprehensive guide to key federal and state filing dates.
January 15
Fourth Quarter 2025 Estimated Tax Payments due. Final payment period for the previous fiscal year to avoid underpayment penalties.
March 15
Income Tax Returns due for S-Corporations and Partnerships. Deadline for entities operating on a calendar year basis.
April 15
Individual Income Tax Returns due for 2025. This is also the deadline for First Quarter 2026 Estimated Tax payments.
June 15
Second Quarter 2026 Estimated Tax Payments due. Applicable for business owners, self-employed individuals, and investors.
September 15
Third Quarter 2026 Estimated Tax Payments due. Mid-annual review of tax liabilities to ensure appropriate withholdings.
October 15
Final deadline for filing extended 2025 Individual Income Tax Returns. All extension forms must be completed by this date.
Corporate Deadlines
Navigating reporting requirements requires meticulous planning. Stay ahead of your 2026 compliance obligations with our detailed reporting calendar.
Information Returns
JAN 31
Deadline for filing Form 1099-NEC for non-employee compensation and mailing annual income statements to contractors and vendors.
S-Corp & Partnership Returns
MAR 15
Calendar year S-Corporations (Form 1120-S) and Partnerships (Form 1065) must file returns or request a 6-month extension.
C-Corporation Returns
APR 15
Federal income tax returns for C-Corporations (Form 1120) are due, along with the first quarter estimated tax payments for the current year.
CTA Reporting
ONGOING
Beneficial Ownership Information (BOI) reports must be filed within 90 days of formation for new entities under the Corporate Transparency Act.