CRITICAL Deadlines
Every Business Owner Should Have On Their Calendar
Missed another deadline?!
You’ve got enough on your plate with running your business – it’s easy to forget a due date or miss a filing, but that can add up to penalties and fees! Let us give you a hand with our CRITICAL Deadline checklist, and if you like the idea of lightening your load a bit more, give us a call and see what we can do to help!
We’ve got your back. Want to learn more? Contact Us!
Don’t Let This Be You When The Next Deadline Is Due!
Dates & Deadlines
2025 California Business Deadline Calendar
📅 January
- January 15: Q4 Estimated Tax Payment Due (Federal & CA)
- January 31: Distribute W-2s and 1099-NECs to employees and Contractors
- January 31: File Form 940 (Federal Unemployment)
💰 February
- February (varies): File BOE Sales Tax (Monthly or Quarterly, CA CDTFA)
- February 19: TBS Team Member Birthday – Jen!
📧 March
- March 15: S Corp (1120-S) and Partnership (1065) Tax Return or Extension Due
📎 April
- April 15: Individual (1040) and C Corp (1120) Tax Return or Extension Due
- April 30: Q1 Payroll Tax Form 941 Due
📃 May
- May 1: TBS Team Member Birthday – Kylie!
- May 7: CA LLC Tax ($800) due (Form 3522)
- May 15: Nonprofit Tax Returns (Form 990) Due
💸 June
- June 15: Q2 Estimated Tax Payment Due (Federal & CA)
📆 July
- July 31: Q2 Payroll Tax Form 941 Due
- July 31: File Form 5500 if applicable (retirement plans)
📝 August
- August (varies): Renew Business Licenses (City/County deadlines)
⏰ September
- September 15: Extended S Corp and Partnership Returns Due
💻 October
- October 15: Extended Individual and C Corp Returns Due
- October 21: TBS Team Member Birthday – Amber!
- October 31: Q3 Payroll Tax Form 941 Due
🎂 November
- November 24: TBS Team Member Birthday – Crystal!
📁 December
- December (varies): Prepare Year-End Bookkeeping & Close Books
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