Important Tax Deadlines for 2025

It’s a good time to review your 2025 tax and compliance deadlines. Saying organized now helps prevent missed filings, penalties, and last-minute stress. Below is a summary of key federal, California, and local deadlines through January 2026.

• January 15, 2025: Fourth quarter estimated tax payments for 2024 are due.
• January 31, 2025: Quarterly California sales tax returns for Q4 2024 and electronic 1099 filings are due.
• February 28, 2025: Paper 1099 filings and Los Angeles Business Tax Renewal deadline.
• March 15, 2025: Partnerships and S Corporations file 2024 returns or request an extension.
• April 15, 2025: Individual and C Corporation tax returns and first-quarter estimated tax payments for 2025 are due.
• April 30, 2025: Q1 2025 California sales tax returns are due.
• June 17, 2025: Second quarter estimated tax payments for 2025.
• July 31, 2025: Q2 2025 California sales tax returns are due.
• September 16, 2025: Extended deadline for Partnerships and S Corporations and third-quarter estimated tax payments.
• October 15, 2025: Extended deadline for individual and C Corporation tax returns.
• October 31, 2025: Q3 2025 California sales tax returns are due.
• January 31, 2026: Q4 2025 California sales tax returns are due.

Planning ahead and using professional accounting services can help you meet these deadlines with ease. Contact us to stay on track in 2025.