Business Tax Deadlines

Tool

Deadline finder

Pick an entity type and a state to land on the pages that carry your dates.

Worked example: sole proprietor, 2026

  1. JAN15Thu
    Individuals & Sole Proprietors
    Q4 2025 estimated tax payment (Form 1040-ES)
  2. APR15Wed
    Individuals & Sole Proprietors
    Form 1040 return with Schedule C, tax year 2025
  3. APR15Wed
    Individuals & Sole Proprietors
    Q1 2026 estimated tax payment (Form 1040-ES)
  4. JUN15Mon
    Individuals & Sole Proprietors
    Q2 2026 estimated tax payment (Form 1040-ES)
  5. SEP15Tue
    Individuals & Sole Proprietors
    Q3 2026 estimated tax payment (Form 1040-ES)
  6. OCT15Thu
    Individuals & Sole Proprietors
    Form 1040 extended return (Form 4868), tax year 2025

This example is rendered at build time so it reads without JavaScript.