On September 16, 2021, we notified the Director, Submission Processing, Wage and Investment Division, that the IRS needed to identify when to stop coding and editing9 prior year tax returns to prevent having to rework these returns (a situation that occurred during the 2020 Filing Season). For example, the IRS needed to send 822,994 business tax returns back to the Code and Edit function at the beginning of Processing Year 2021 to be re-edited to allow for processing. This occurred because these tax returns, although edited, had not been entered into the IRS’s tax processing system by the end of Processing Year 2020. This resulted in an inefficient use of the IRS’s resources because IRS employees needed to re-edit the tax returns. We recommended that the IRS develop a plan to not only limit the number of returns that would require rework, but also any potential downtime in the Code and Edit function so that resources can be maximized for processing tax returns.