• P = Principal amount (initial deposit)
• r = Annual interest rate (in decimal)
• n = Number of times interest is compounded per year
• t = Time in years
For example, ₹1,00,000 at 7% for 5 years compounded quarterly:
A = 1,00,000 × (1 + 0.07/4)^(4×5) = ₹1,41,477
Most banks compound interest quarterly (n=4), which gives better returns than yearly compounding.
