Daily Interest Calculator

Daily Interest Compounding is the most frequent compounding method used by banks in India, particularly for savings accounts. Unlike quarterly (FD) or annual (NSC) compounding, daily compounding calculates interest every single day and adds it to your principal, so the next day's interest is calculated on the increased amount. This creates the fastest wealth acceleration among regular compounding methods. The difference is subtle for short periods: ₹1L at 5% for 1 year grows to ₹1.05129L with daily compounding vs ₹1.05127L with quarterly compounding (₹2 difference). But over 30 years, daily compounding accumulates to 2-3% more wealth than quarterly. Many savings accounts (especially those earning 3-4% interest) use daily compounding to attract savers with competitive rates. However, the compounding frequency is often oversold as a benefit—the interest RATE matters far more than frequency. 5.5% quarterly beats 5% daily every time. This calculator lets you experiment with different timeframes and rates to understand how daily compounding accelerates wealth. Most savers can ignore this calculator (frequency doesn't move the needle), but those with large amounts in savings accounts (earning 4% daily compound) might see meaningful differences vs quarterly.