California LLC Tax Deadlines 2026
Complete guide to LLC filing dates, extensions, estimated payment schedules, and required forms in California for the 2026 tax year. California imposes a state income tax, so LLC entities must file both federal and state returns.
California LLC filing deadline
LLC returns follow the partnership calendar-year due date.
Due: Mar 16, 2026
Extension: Oct 15, 2026
Form: Form 568
Estimated payments
No state estimated payment schedule listed.
Due: N/A
California LLC Tax Calendar at a Glance
| Event | Date |
|---|---|
| Filing deadline | Mar 16, 2026 |
| Extension deadline | Oct 15, 2026 |
FAQ
When is the LLC tax filing deadline in California for 2026?
The California LLC tax return is due Mar 16, 2026 for the 2026 tax year. An extension is available until Oct 15, 2026.
Does California require LLC estimated tax payments?
Estimated payments are not typically required at the entity level for LLC in California, but confirm with California Franchise Tax Board.
What form do I file for a LLC in California?
LLC entities in California file using Form Form 568. You can download the form from California Franchise Tax Board at https://www.ftb.ca.gov.
Can I get an extension for my California LLC tax return?
Yes. California allows an extension for LLC returns until Oct 15, 2026. Note that an extension gives you more time to file, not more time to pay — any tax owed is still due by the original deadline of Mar 16, 2026.
What are the penalties for filing late in California?
California typically charges a failure-to-file penalty (usually 5% of unpaid tax per month, up to 25%) and a failure-to-pay penalty (usually 0.5-1% per month). Interest also accrues on unpaid balances. Filing for an extension by the original deadline avoids the failure-to-file penalty but not the failure-to-pay penalty.
Where can I file California LLC taxes?
File through California Franchise Tax Board. Visit https://www.ftb.ca.gov for e-filing options, downloadable forms, and payment portals.
California Estimated Tax Payments
View the full quarterly estimated payment schedule for California, including all entity types and payment methods.
View California estimated payments →