The September 540-ES is missing from my tax file. Does this mean I do not need to file that form and payment? The 1040-ES was in my tax file, so why the difference?

[VolvoGirl]

There is no California 3rd quarter estimated payment.  They don't want one.  They want 30%  40%  0%  30%.  Scroll down and see When to Pay here,

https://www.ftb.ca.gov/pay/estimated-tax-payments.html

[toddjp6937]

The Mint community answer was what I expected.  Leave it to CA to get as much money as possible up front!  I thought they would have four equal quarterly ES payments like most rational people would expect.  Thanks for the answer.