The IRS announced today that it is keeping interest rates the same for the first quarter of 2010 (Jan-March). These interest rates have remained the same since the 2nd Quarter of 2009. For taxpayers, businesses, and corporations the interest rates pertinent to IRS underpayment interest are as follows:
- 4% for underpayments – this is calculated by adding the Federal Short Term Rate (1% + a 3% individual taxpayer underpayment interest rate)
- 3% for small businesses or businesses who owe less than $10k
- 6% for corporations with large underpayments (above $10k). This is calculated by taking the Federal Short Term rate (1%) and adding 5% to it.
For more information visit IRS.gov or if you have a problem with an underpayment reach out to us today.
Related posts:
- IRS Interest Rates Remain Unchanged for Q1 2012
- IRS Interest Rates Q3 2011: Rates for Overpayments & Underpayments
- IRS Interest Rates Raised Q2 2011 on Late Payments & Underpayments
- Capital Gains Rates For Long Term/Short Term 2010, 2011, 2012, 2013+
- Tax Law Changes for 2010 that Impact Small Businesses



