all IRS forms are available in fillable PDF at www.irs.gov
That includes Form 2210.
you have two choices:
amend your return such that Form 2210 is attached and shows no penalty or a smaller penalty.
Get Form 2210 and fill it out yourself showing no penalty or a smaller penalty.
This usually involves checking one of the options A, C,, or D.
submit via Form 1040-X that you mail in yourself.
You must have a good Explanation to submit the Form such that is shows IRS calculation was wrong and you are right
OR, you can request a waiver by amending to attach the TurboTax Form 2210 with Box A checked.
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