From the PA Department of Revenue | Pennsylvania Bulletin Doc. No. 18-2018 |  December 29, 2018

Pennsylvania announced 2019 interest rates on tax underpayments and overpayments. The interest rates increased by 2% per year in each category. 

Interest Rate on Underpayments

The 2019 interest rate on underpayments of all Pennsylvania taxes is 6% per year, up from 4% in 2018.

Interest Rates on Overpayments

The 2019 interest rates for overpayments of taxes are:

  • 6% per year for personal income tax, up from 4% in 2018; and
  • 4% per year for all other taxes, up from 2% in 2018.