Ca Estimated Taxes -TT shows all due in one payment rather than quarterly

Hello,

I am self employed and must pay estimated taxes to Ca for 2025. I have had to pay estimated taxes for a number of years and Turbo Tax has always shown them spread out quarterly or in 3 payments. This year for the first time; Turbo Tax has only offered me one estimated payment; due in full by April 15 of this year -2025.

Why did it do this? Why can't I make smaller payments over the year? Such as April; June; & Sept? Or April June, Sept & January?

Is this required by the State of Ca because I owed taxes on top of my estimated payments for 2024? I have already filed. What will happen if I pay the estimates in smaller amounts?

posted