After you file


@troubled too wrote:

My turbo tax return for 2020 has remained the same as submitted.  I have not received any notice from turbo tax as to why the reduction in refund.  I do NOT have any of the reasons for reducing the refund as you suggested.  Please advise.


TurboTax would not be sending a reason for the reduction in your federal tax refund.  Only the IRS would be sending a notice in the mail explaining why the tax refund was reduced.   The amount of tax refund on the TurboTax Tax Home web page and on the tax return will not change since TurboTax receives no information whatsoever from the IRS concerning a tax refund.

The IRS usually mails those notices within a few weeks after the tax refund has been issued.