Accrued Interest Calculator: Easily Compute Bond Interest Earnings

Use this calculator to find the bond interest owed between coupon dates. Enter six fields—dates, rate, par, frequency, basis—and it returns accrued interest with the formula $$text{Interest}= text{Par} times text{Rate} times frac{text{Days Accrued}}{text{Days in Year} times text{Payments}}$$. Roughly 45 % of U.S. corporate bonds pay semi-annual coupons (SIFMA, 2023).