electronic payment of balance due

Great question, wondering same.

Can we efile now and will the balance due just not be withdrawn until July 15th Federal and June 15th CA?   

Does this include 2020 Est tax payments?

I don't trust anything about CA as they couldn't even piggy back off the federal, so two sets of rules

Anyone have any guidance here?

I am assuming that you are both referring to some news that has just come out about abating penalties and interest. 

For the 1040 and California there are separate "Electronic payment date [O]" entries. If you press each one you will see that with the current system, the date can not be after the filing date of the return. Possibly Lacerte will modify that information, but I sure would not count on it. 

If you really want to game the system, file on time to avoid late filing penalty (as of right now there is no provision for a later file date.) Override the amount being paid with a -1, then go to https://directpay.irs.gov/directpay/payment?execution=e1s1 for Fed and https://www.ftb.ca.gov/pay/bank-account/index.asp for CA and set up your late payment to gain your few days of free money out of the government.

Personally, I wouldn't play that game.