FD vs RD Calculator
Finance & InvestmentCompare Fixed Deposit and Recurring Deposit returns on the same investment. See whether a lumpsum FD or monthly RD deposits earn more interest at the same rate.
Fixed Deposit
Full amount upfront
₹0
Recurring Deposit
₹8,333/month
₹0
Both use quarterly compounding. RD monthly deposit = principal ÷ tenure.
What is a FD vs RD?
An FD vs RD Calculator compares the maturity amount and interest earned when the same total money is placed in a Fixed Deposit versus a Recurring Deposit at the same interest rate and for the same period. The comparison isolates the single variable that drives the difference: when your money is deployed. FD places the full principal on day one; RD spreads it monthly.
This distinction matters because the two products serve completely different use cases in Indian banking. An FD suits someone who already has a surplus — a bonus, an inheritance, proceeds from a property sale — and wants to park it safely for a fixed period. An RD suits someone who does not have that surplus yet but wants to save a fixed amount every month. Understanding the interest difference between these two structures, on the same total capital, helps you make the right choice when both options are genuinely available to you.
Both FD and RD use quarterly compounding in India, as mandated by the Reserve Bank of India's guidelines. This is an important nuance: FD interest is not calculated as simple interest on the principal. Each quarter's interest is added to the principal, and the next quarter earns interest on the new total. This compounding effect, applied to the full FD principal from day one, is precisely why FD always beats RD at the same rate.
For investors comparing these products to market-linked alternatives, the SIP vs RD Calculator allows you to compare a monthly mutual fund SIP against an RD, while the Fixed Deposit Calculator models FD maturity with payout options (monthly, quarterly, or at maturity) in detail.
How to use this FD vs RD calculator
Enter your Total Investment Amount — the full principal you plan to invest, regardless of whether you are leaning towards FD or RD. For FD, this entire amount is deployed immediately. For RD, the calculator divides this by the tenure in months to compute the monthly instalment. A common amount is ₹1,00,000 (₹1 lakh).
Set the Interest Rate — enter the interest rate your bank currently offers for the chosen tenure. Check your bank's website or FD rate card for the exact rate. Most banks offer slightly different rates for different tenure brackets (e.g., 7.1% for 1 year but 7% for 2 years). Use the same rate for both instruments — the purpose is to isolate the timing effect, not a rate difference.
Adjust the Tenure — set the investment period in months. A 12-month tenure gives a fair short-term comparison; 60 months (5 years) shows how the FD Advantage behaves over a longer period. Note that tenure in this calculator is in months, so a 2-year comparison requires entering 24.
Read the maturity amounts — compare FD Maturity Amount and RD Maturity Amount in the results. The bar chart makes the gap immediately visible. The FD Maturity is always higher; the question is whether the margin justifies choosing FD over RD given your cash-flow situation.
Evaluate the FD Advantage — if this number is significant relative to the total interest earned, and you already have the full principal available, an FD is the clearly superior choice. If the advantage is small (short tenure, low rate) and you need monthly liquidity, an RD may be the better practical option.
Formula & Methodology
FD Maturity — Quarterly Compounding on Full Principal: FD_Maturity = P × (1 + r/4)^(4 × t) Where: - P = total principal (₹) - r = annual interest rate ÷ 100 - t = tenure in years (= months ÷ 12) RD Maturity — Sum of Quarterly-Compounded Monthly Instalments: RD_Maturity = Σ (P/n) × (1 + r/4)^(4 × k/12) for k = 1 to n Where: - P/n = monthly instalment = total principal ÷ tenure in months - r = annual interest rate ÷ 100 - k = months remaining for each instalment (n − instalment number + 1) - n = total number of monthly instalments (= tenure in months) Worked example — ₹1,00,000 at 7% p.a. for 12 months: - Monthly RD instalment = ₹1,00,000 ÷ 12 = ₹8,333.33 - FD Maturity = 1,00,000 × (1 + 0.07/4)⁴ = 1,00,000 × 1.071859 ≈ ₹1,07,186 - RD Maturity = Σ 8,333.33 × (1.0175)^(4 × k/12) for k = 1 to 12 ≈ ₹1,04,604 - FD Interest = ₹7,186 | RD Interest = ₹4,604 | FD Advantage = ₹2,582 Key assumptions: - Both instruments use quarterly compounding (as per RBI guidelines for Indian banks) - FD modelled as cumulative (interest reinvested, not paid out monthly) - RD instalment = total principal ÷ tenure; actual bank RDs require a fixed monthly amount, not a derived fraction - No TDS, penalty, or premature withdrawal modelled - Interest rate is assumed constant for the full tenure (no step-up or floating rate) For detailed FD planning with monthly interest payout, non-cumulative options, and different compounding frequencies, use the Recurring Deposit Calculator for the RD side and the Fixed Deposit Calculator for the FD side separately.