Since 1991 the IRS has had a program allowing plan sponsors to correct administrative errors and, over the years the IRS has expanded the availability of this program and the ability to “self-correct” errors without an IRS filing. SECURE 2.0 took this trend--of expanding the availability of self-correction--to the next level by directing the IRS to allow self-correction for a broad range of “inadvertent” errors. IRS Notice 2023-43 clarifies the rules for this expanded self-correction opportunity.