The IRS is targeting high net worth individuals with overdue tax returns since 2017. Letters have been sent to those earning $400,000-$1 million, with future expansion targeting higher earners. The IRS urges taxpayers to fulfill their obligations, warning of penalties and interest charges for non-filers. To avoid complications, individuals are advised to seek professional assistance for tax calculations and filing. This initiative aims to recover unpaid taxes from delinquent high-income earners.