What is the interest rate for Federal Stafford loans?
Calculate the interest rate for the in-school, grace, or authorized deferment periods by adding 1.7% to the Bond-equivalent rate for 91-day T-bills, not to exceed 8.25%. During periods of repayment the formula is the Bond-equivalent rate for 91-day T-bills plus 2.3%, not to exceed 8.25%. For the period July 1, 2006 to June 30, 2007, the new rate of interest is 6.8% while in school. The new rates of interest are determined on July 1st of every year.