📅 Important Tax Dates
Individual Tax Deadlines (2026)
January 15, 2026Q4 2025 estimated tax payment due
January 31, 2026Employers must furnish W-2s; 1099-NEC due
March 15, 2026S-Corp (1120-S) and Partnership (1065) returns due (or extension)
April 15, 2026Individual (1040) returns due (or extension); Q1 2026 estimated tax due; IRA/HSA contribution deadline for 2025
June 15, 2026Q2 2026 estimated tax payment due
September 15, 2026Extended S-Corp/Partnership returns due; Q3 2026 estimated tax due
October 15, 2026Extended individual (1040) returns due
January 15, 2027Q4 2026 estimated tax payment due
Business Tax Deadlines (2026)
January 31, 2026W-2s and 1099-NEC filing deadline
March 15, 2026S-Corp and Partnership returns due
April 15, 2026C-Corp (1120) returns due; Q1 estimated tax
September 15, 2026Extended S-Corp/Partnership returns due
October 15, 2026Extended C-Corp returns due
State Tax Deadlines
April 15, 2026Most state individual returns due; Q1 state estimated tax (CA, NY, NJ, CT, IL, MA, OR, PA, and most others)
June 15, 2026Q2 state estimated tax payments due
September 15, 2026Q3 state estimated tax payments due
January 15, 2027Q4 state estimated tax payments due
Payroll Deadlines (2026)
Monthly/Semi-weeklyFederal payroll tax deposits (varies by schedule)
January 31, 2026Form 940 (FUTA) due; Q4 Form 941 due
April 30, 2026Q1 Form 941 due
July 31, 2026Q2 Form 941 due
October 31, 2026Q3 Form 941 due
📌 Note: TX, FL, WA, NV, WY, SD, AK have no state income tax. Contact us for your specific state requirements.
Dates may change due to weekends or holidays. Contact us for personalized deadline tracking.