Calendar
Key tax deadlines
When a date falls on a weekend or holiday, it moves to the next business day. Disaster relief can also change California deadlines — ask us if you're unsure.
- January 15Fourth-quarter estimated tax payment for the prior year
- January 31Employers send W-2s; most 1099s are mailed
- March 15Partnership and S-corporation returns due
- April 15Individual returns due, extension requests, and first-quarter estimated payment
- June 15Second-quarter estimated tax payment
- September 15Third-quarter estimated payment; extended business returns due
- October 15Extended individual returns due