@AL618 If this was a TurboTax calculation error then they will pay for any penalties and interest but not taxes owed. The taxes owed are the responsibility of the taxpayer.
Go to this TurboTax support FAQ for how to file an Accuracy claim - https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-account-billing/submit-claim-turb...
