Although, as reported in the National Taxpayer Advocate blog, the IRS suspended the automatic mailing of collection notices routinely sent when a taxpayer owes federal tax on February 5, 2022 to give the IRS an opportunity to clear its processing backlogs, such automatic mailings are likely to recur and, meanwhile, other IRS delinquent collection activities continue unabated. Statistics for fiscal year 2021, show the IRS ending inventory with a balance of assessed tax, penalties and interest exceeding $133.4 trillion, enforcement activity involving more than 500,000 taxpayers, and 3.8 million taxpayers paying tax liabilities under installment agreements.