Each month, the IRS provides various prescribed rates for federal income tax purposes. These rates, known as Applicable Federal Rates (or AFRs), are regularly published as revenue rulings. The list below presents the revenue rulings containing these AFRs in reverse chronological order, starting with January 2000.. Enter a term in the Find Box. Below-market loans. Imputed interest comes into play when someone makes a "below-market" loan. That's a loan with an interest rate below a certain minimum level set by the government, known as the Applicable Federal Rate, or AFR.. Every month, the IRS publishes a list of current Applicable Federal Rates, which reflect market conditions. Download a free AFR report by month and year. PPC’s 1040 Deskbook provides detailed, easy-to-understand, and affordable tax return focused guidance, complete with real-life examples and illustrations of filled-in forms, so owners and/or staff can quickly and easily resolve the key issues encountered when preparing individual tax returns.