The 2020 tax year filing was submitted by TurboTax eFile prior to the filing deadline in April 2021. The IRS processed the 2020 tax return in or after April 2021. The return was accepted with in a day of the eFile in April 2021 and there was no further communications. The 2021 tax year filing was submitted by TurboTax eFile in April 2022. The IRS sent a letter accepting my total tax liability but indicated I did not pay the full amount. The difference they calculated is equal to the 2020 tax year refund that I applied to the 2021 tax year filing.
