California State Tax Due Date 2025

California State Tax Due Date 2025. Disaster relief information — property owners affected by california fires or other california disasters may be eligible for property tax relief, please refer to our disaster relief webpage for. The deadline to file a tax extension is april 15, 2025.

Mailing addresses are listed below—is october. Deduct the amount of tax paid from the tax calculation to provide an example of your 2025/26 tax refund.