2022 Fourth Quarter IRS Interest Rates (Underpayment & Overpayment)

On August 15, 2022, the IRS announced that the 2022 Fourth Quarter IRS interest rates will again increase for both underpayment and overpayment cases. This increase closely follows the Federal Reserve’s recent increases in interest rates.

This means that, the 2022 Fourth Quarter IRS interest rates will be as follows:

Six (6) percent for overpayments (five (5) percent in the case of a corporation);
Six (6) percent for underpayments;
eight (8) percent for large corporate underpayments; and
three and one-half (3.5) percent for the portion of a corporate overpayment exceeding $10,000.

Under the Internal Revenue Code, the interest rates are determined on a quarterly basis. This means that the next change in the IRS underpayment and overpayment interest rates may occur only for the 1st Quarter of 2023.

The the 2022 Fourth Quarter IRS interest rates are important for many reasons. These are the rates that the IRS uses to determine how much interest a taxpayer needs to pay on an additional tax liability that arose as a result of an IRS audit or an amendment of his US tax return. The IRS also utilizes these rates with respect to the calculation of PFIC interest on Section 1291 tax.

As an international tax law firm, Sherayzen Law Office keeps track of the IRS underpayment interest rates on a regular basis. We often amend our client’s tax returns as part of an offshore voluntary disclosure process. For example, both Streamlined Domestic Offshore Procedures and Streamlined Foreign Offshore Procedures require that a taxpayer amends his prior US tax returns, determines the additional tax liability and calculates the interest on this liability.

Moreover, we very often have to do PFIC calculations for our clients under the default IRC Section 1291 methodology. This calculation requires the usage of the IRS underpayment interest rates in order to determine the amount of PFIC interest on the IRC Section 1291 tax.

Finally, it is important to point out that the IRS will use the 2022 Fourth Quarter IRS interest rates to determine the amount of interest that needs to be paid to a taxpayer who is due a tax refund as a result of an IRS audit or amendment of the taxpayer’s US tax return. Surprisingly, we sometimes see this scenario arise in the context of offshore voluntary disclosures.

Sherayzen Law Office continues to track any changes the IRS makes to its overpayment and underpayment interest rates.