Accrued Interest Calculator

What is accrued interest?

When you buy a bond between coupon payment dates, you owe the seller the interest that has accumulated since the last payment. This is accrued interest. The dirty price (what you actually pay) = clean price + accrued interest. On the next coupon date, you receive the full coupon — which includes the accrued interest you paid plus what you earned during your holding period.

For Indian G-Secs and SDLs, the 30/360 convention applies per FIMMDA rules: each month is treated as 30 days, the year as 360. Listed corporate NCDs and PSU bonds use Actual/Actual (SEBI circular CIR/IMD/DF/18/2013); under SEBI circular CIR/IMD/DF-1/122/2016, a one-year period that contains 29 February counts 366 days. This calculator's Actual/Actual splits the days by calendar year (365 or 366 each), the ISDA method; when a coupon period crosses a year end next to a leap year, its figure can differ slightly from the SEBI method.