Tax underpayments will have interest applied to them daily. The rates below apply to tax underpayments of income and excise taxes including:
| Interest Rates for NYC Income & Excise Taxes | |||
| October 1, 2024 | through | December 31, 2024 | 12% |
| July 1, 2024 | through | September 30, 2024 | 12% |
| April 1, 2024 | through | June 30, 2024 | 12% |
| January 1, 2024 | through | March 31, 2024 | 12% |
| October 1, 2023 | through | December 31, 2023 | 12% |
| July 1, 2023 | through | September 30, 2023 | 11% |
| April 1, 2023 | through | June 30, 2023 | 11% |
| January 1, 2023 | through | March 31, 2023 | 11% |
| October 1, 2022 | through | December, 31, 2022 | 10% |
| July 1, 2022 | through | September 30, 2022 | 9% |
| April 1, 2022 | through | June 30, 2022 | 8% |
| January 1, 2022 | through | March 31, 2022 | 7.5% |
| October 1, 2021 | through | December 31, 2021 | 7.5% |
| July 1, 2021 | through | September 30, 2021 | 7.5% |
| April 1, 2021 | through | June 30, 2021 | 7.5% |
| January 1, 2021 | through | March 31, 2021 | 7.5% |
| October 1, 2020 | through | December 31, 2020 | 7.5% |
| July 1, 2020 | through | Sept 30, 2020 | 7.5% |
| April 1, 2020 | through | June 30, 2020 | 9% |
| July 1, 2019 | through | March 31, 2020 | 9% |
| January 1, 2019 | through | June 30, 2019 | 10% |
| April 1, 2018 | through | December 31, 2018 | 9% |
| April 1, 2016 | through | March 31, 2018 | 8% |
| October 1, 2011 | through | March 31, 2016 | 7½% |
| April 1, 2011 | through | September 30, 2011 | 8% |
| January 1, 2011 | through | March 31, 2011 | 7½% |
| July 11, 2009 | through | December 31, 2010 | 8% |
| April 1, 2009 | through | July 10, 2009 | 6% |
| January 1, 2009 | through | January 1, 2009 | 7% |
| October 1, 2008 | through | December 31, 2008 | 8% |
| July 1, 2008 | through | September 30, 2008 | 7% |
| April 1, 2008 | through | June 30, 2008 | 8% |
| January 1, 2008 | through | March 31, 2008 | 9% |
| July 1, 2006 | through | December 31, 2007 | 10% |
| October 1, 2005 | through | June 30, 2006 | 9% |
| April 1, 2005 | through | September 30, 2005 | 8% |
| October 1, 2004 | through | March 31, 2005 | 7% |
| July 1, 2004 | through | September 30, 2004 | 6% |
| April 1, 2004 | through | June 30, 2004 | 7% |
| October 1, 2003 | through | March 31, 2004 | 6% |
| July 1, 2003 | through | September 30, 2003 | 7% |
| January 1, 2002 | through | June 30, 2003 | 6% |
| July 1, 2001 | through | December 31, 2001 | 7% |
| April 1, 2001 | through | June 30, 2001 | 8% |
| April 1, 2000 | through | March 31, 2001 | 9% |
| April 1, 1999 | through | March 31, 2000 | 8% |
| January 1, 1999 | through | March 31, 1999 | 7% |
| April 1, 1998 | through | December 31, 1998 | 8% |
| Archived Interest Rate Notices on Tax Underpayments | |||