RD Maturity Formula
RD uses quarterly compounding per RBI: A = P × (1 + r/4)4n/12 for each installment where r = annual rate/100, n = remaining months. Total maturity = sum of all installment future values.
Example: ₹5,000/month for 24 months at 7% → Total invested: ₹1,20,000. Maturity ≈ ₹1,29,200.
⚠️ Disclaimer: Rates vary by bank. Interest is taxable as income. Source: RBI.