After you file

TurboTax does not track a tax refund.  The dates shown on the Tax Home page are only estimates based on the IRS target of sending a refund within 21 days after receiving the tax return.  This would only be for the original tax return.

There are no estimates for an amended return.

Go to this IRS website for the status of an amended tax return - https://www.irs.gov/filing/wheres-my-amended-return

The IRS will take up to 20 weeks or longer to process an amended tax return.