🏦 RD Calculator

M = R × [(1 + i)^n - 1] / (1 - (1+i)^(-1/3)) Standard simplified formula: M = P × n + P × n(n+1)/2 × r/1200 Where: M = Maturity Amount P = Monthly deposit n = Tenure in months r = Annual interest rate Most banks use quarterly compounding: i = r/400 (quarterly rate) For each installment, compound for remaining months

Each monthly installment earns interest for a different number of months: Month 1 deposit → earns interest for n months Month 2 deposit → earns interest for (n-1) months ... Month n deposit → earns interest for 1 month Total Maturity = Sum of all installment amounts compounded for their respective durations Example: ₹5,000/month, 7% p.a., 3 years (36 months) Month 1: ₹5,000 × (1 + 0.07/4)^12 = ₹5,898 Month 2: ₹5,000 × (1 + 0.07/4)^11 = ₹5,861 ... Month 36: ₹5,000 × (1 + 0.07/4)^1 = ₹5,087 Total Maturity ≈ ₹2,02,930

Recurring Deposit (RD): Fixed monthly deposits, guaranteed returns Interest taxable, TDS applicable Best for: Regular savers, low-risk investors Fixed Deposit (FD): Lump sum invested once, guaranteed returns Higher return than RD (full compounding from day 1) Best for: Those with lump sum available SIP (Mutual Fund): Monthly investment in equity/debt funds Market-linked — higher return potential (12-15%) No capital guarantee, but inflation-beating Best for: Long-term wealth creation (5+ years)