Taxpayers have until October 15th to file returns with CA, but payment is due on June 17, 2024 (for San Diego County taxpayers). The June 17, 2024, deadline applies to individual income tax returns and payments normally due on April 15, 2024.Remember, December 10 and April 10 are the payment deadlines for property taxes, not to be confused with the I.R.S. April 15th deadline for federal taxes. You may pay your Business Tax billing statement online using Visa, MasterCard, and Electronic Fund Transfer (eCheck). Payments processed after p.m. As a result, affected individuals and businesses will have until June 17, 2024, to file returns and pay any taxes that were originally due during this period. Affected taxpayers in certain counties will have until June 17, 2024, to file returns and pay any taxes that were originally due during this period. Cash, check, money order, debit card, Mastercard and Visa are accepted. San Diego, taxes are NOT due April 15. Start saving for June, if you owe, though.