HR
2026 HR Compliance Calendar
Key federal HR, payroll, tax, and benefits deadlines for 2026. Use the arrows to move between months, or filter by category.
Calendar›2026›September
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September deadlines (1)
- 15Q3 estimates & extended pass-through returns dueTax Filing
Third-quarter 2026 estimated tax payment, and extended S-corp / partnership returns are due.
Informational only: not legal or tax advice. Dates reflect federal statutory deadlines for calendar-year filers and roll to the next business day when they fall on a weekend. State and local deadlines vary. Always confirm with a licensed professional.
