The due date to file your California state tax return and pay 5 any balance due is April 15, 2025. We offer the following options to help you pay your bill.Payment Extension: Extend your bill's due date to give yourself more time to pay. By enrolling in this reliable service your bill will be paid automatically on your due date each billing period. ✓ NO checks to write! The June 17, 2024, deadline applies to individual income tax returns and payments normally due on April 15, 2024. "Online payments will be accepted until midnight on April 10. The new deadline for tax payments and tax filings that fall between January 21st and June 17th is now June 17, 2024. You may pay your Business Tax billing statement online using Visa, MasterCard, and Electronic Fund Transfer (eCheck). Payments processed after p.m.