When Are Estimated Taxes Due 2024 California State. The california tax estimator lets you calculate your state taxes for the tax year. — in 2024, estimated tax payments are due april 15, june 17, and sept.
— for 2023, your first quarter estimated payment is due april 18, 2023, and is 30% of your anticipated tax liability. The final payment is due on january 16, 2024.