when you send it in. as of about the end of the year 2020 the IRS had over 7 million unprocessed returns. congress has cut its budget so it was short on staffing. the pandemic cut into even that. its computers are old and really obsolete. paper returns must be entered manually and depending on their complexity could take a while to enter since it must be done by hand. also the IRS receives numerous other forms. that must be handled. all you can really do at this point is continue to check. until your return is entered into its computer system it doesn't even know it has it.
