1040-ES does not work with PayPal at this time.
I did answer the question - it doesn’t work when applying it to 2021. But it will work when applying it as a 2020 payment. That’s the whole problem, the only reason I brought it up in the first place!
They only charge 1.96% for paypal? That’s less than paypal charges for anything these days…
They may have negotiated lower fees, since tax payments are typically large transactions.
I did not actually finish the process, but the PayPal window works now.
Thanks for the update, I had decided to wait until later in the quarter to try again. But it is in fact back to working order - net gain of $46.13 on a [just under] $1500 total charge.