This revenue ruling provides various prescribed rates for federal income tax purposes for December 2019 (the current month). Table 1 contains the short-term, mid-term, and long-term applicable federal rates (AFR) for the current month for purposes of section 1274(d) of the Internal Revenue Code. Updates for the corporate bond weighted average interest rate for plan years beginning April 2019; the 24-month average segment rates; the funding transitional segment rates applicable for April 2019 and the minimum present value transitional rates for March 2019. Notice 2019–21, 2019-14 I.R.B. 927 Every month, the IRS publishes a list of current Applicable Federal Rates, which reflect market conditions. For example, in June 2018, the AFR for loans of less than 3 years was 1.78%. If you loan someone money at no interest, or at 0.25%, or at any rate below 1.78%, you have to deal with imputed interest.