@vasile1 unless you communicate with the IRS via form 2210, the underpayment penalty calculated by Turbo Tax is the same way the IRS would calculate it.
"unless you fiddle with form 2210" ?????? THAT is the prescribed IRS process!!!
You can overrise the underpayment penalty calculated on Line 28 by completing form 2210. I think you are spilling your venom in the wrong place. Form 2210 (and form 2210ai) are a hassle to complete, but that hassle is created by the IRS and not Turbo Tax. Turbo Tax is just following the IRS rules.
DOGE really doesn't want you "discussing" it directly with the IRS, unless you complete Form 2210 first.
