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    • Home
    • Contact Us
    • Resources
    • Calendar
      • Individuals
      • Business
    • Services
      • Tax Planning
      • Services
  • Home
  • Contact Us
  • Resources
  • Calendar
    • Individuals
    • Business
  • Services
    • Tax Planning
    • Services

ImporTant irs dates for businesses

Jan 26, 2026

E-file Opens

IRS

Event Details

Jan 26, 2026

E-file Opens

IRS is expected to begin accepting and processing 2025 calendar-year business tax returns

IRS

March 16, 2026

Deadline for 1120-S and 1065 Filing

IRS

Event Details

March 16, 2026

Deadline for 1120-S and 1065 Filing

Deadline for calendar-year Partnerships (Form 1065) and S Corporations (Form 1120-S) to file returns or an extension


IRS

March 16, 2026

K-1 and K-3's Due

IRS

Event Details

March 16, 2026

K-1 and K-3's Due

Deadline for furnish copy of Schedule K-1 or K-3 to each partner/shareholder 

IRS

April 15, 2026

Deadline for 1120 Filing

IRS

Event Details

April 15, 2026

Deadline for 1120 Filing

Deadline for calendar-year C Corporations (Form 1120) to file returns or an extension

IRS

Sept 15, 2026

Deadline to file your extended 2025 1120-S and 1065 tax returns

IRS

Event Details

Sept 15, 2026

Deadline to file your extended 2025 1120-S and 1065 tax returns

Extended deadline for calendar-year Partnerships (Form 1065) and S Corporations (Form 1120-S) to file

IRS

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