I received a letter from the IRS for a penalty

[Critter]

TT calculates an estimated underpayment penalty based on your entries in the program  however the feds & state reserve the right to access a final underpayment penalty, late filing penalty or late paying penalty ( plus interest ) based on the info they have and when the balance due was actually paid.      https://www.irs.gov/individuals/understanding-your-cp14-notice

[Hal_Al]

This is a user to user forum. You can probably get help from this forum by providing more detail on what the IRS notice says.
If you purchased Audit Defense for your tax return, call Tax Resources, Inc. at 877-829-9695, or report your notice on their web site at <a rel="nofollow" target="_blank" href="http://intuit.taxaudit.com/">http://intuit.taxaudit.com/</a>. Do not contact the IRS. Let Tax Resources contact them for you.
If you did not purchase Audit Defense, start by downloading and running the Audit Support Center at the following link.
<a rel="nofollow" target="_blank" href="https://turbotax.intuit.com/best-tax-software/why-choose-turbotax/audit-support.jsp">https://turbota...>
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