| State Name | California |
| Business Entity Type | S-Corporations |
| Extension Status | Approved Automatically |
| Return Due Date | March 17, 2025 |
| Extended Due Date | September 15, 2025 |
| Other Information | * California grants you an automatic 6-month extension to file your business tax return. * The extension is NOT an extension to pay any taxes you may have due. Tax payments are due by the original return due date. * Individuals and businesses with their principal residence or principal place of business in Los Angeles County qualify for a postponement to file, and pay taxes until October 15, 2025. |
| Online Payment | California | Online Tax Extension Payment |
| Payment Voucher Form | Form 3539 | Payment for Automatic Extension for Corporations and Exempt Organizations |
| State Payment Agency | California | Franchise Tax Board |
| Mailing Address with Payment | Franchise Tax Board |
| Failure to File Penalties | 5% of unpaid tax per month up to 25%. |
| Failure to Pay Penalties | 5% of unpaid amount plus 0.5% per month up to a maximum of 25%. |
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