What’s New: 2025 & 2026 Tax Deadlines
Tax laws and filing deadlines change, and staying informed is essential. Below is an overview of key tax deadlines for the 2025 and 2026 tax seasons.
Tax Filing Start Date
Tax filing officially begins January 26th.
Extension Deadline
The deadline to file for an extension is April 15. Filing an extension does not extend the deadline to pay taxes owed. Interest and penalties begin accruing on any unpaid balance after April 15.
Key Tax Filing Deadlines
Individuals & Married Couples
Filing deadline: April 15
S-Corporations & Partnership LLCs
Filing deadline: March 15
C-Corporations
Filing deadline: April 15
California Registered Businesses (LLCs, S-Corps, C-Corps)
$800 Annual Franchise Fee Due March 15, 2026
Non-Profit Corporations
Deadlines depend on fiscal year-end:
Fiscal year ending June 30 → Filing deadline November 15 of the same year
Example: Year ending June 30, 2026 → Filing deadline November 15, 2026
Fiscal year ending December 31 → Filing deadline May 15