Irs Interest Rates 2024 Payment. The irs has confirmed that the interest rates for q3, beginning on july 1 of 2024, will be as follows: Corporations (payments up to $10,000):
For tax year 2024, the top tax rate remains 37% for individual single taxpayers with incomes greater than $609,350 ($731,200 for married couples. This rate was 5.55% a month ago.