Instant Interest Release Notes Version

The following changes (which were not available when version was released) are included in this release effective October 1, 2022:

  • Massachusetts changed its interest rate from 6.0% to 7.0% for underpayments and from 4.0% to 5.0% for overpayments.
  • Missouri changed its interest rate from 0.4% to 0.5% for overpayments; the rate for underpayments remained unchanged at 5.0%.