Recurring Deposits Calculator Online – PlanYour Savings Smartly

What Does This Calculator Do?

A recurring deposit is one of the most disciplined and reliable ways to build savings — you commit to depositing a fixed amount every month and let it grow with interest over a defined period, walking away at the end with a lump sum that’s larger than what you put in. The challenge is knowing exactly how much that lump sum will be before you commit, especially when interest compounds quarterly the way most RD accounts operate. This Recurring Deposit Calculator gives you that answer instantly — showing your total amount invested, total interest earned, and final maturity amount all at once.

It’s useful whether you’re evaluating an RD offer from your bank, planning how much to set aside each month to reach a specific savings goal, or simply want to understand how much your regular savings habit will actually be worth at the end of a given tenure.

The Formula Behind It

An RD is not a single lump-sum deposit — it’s a series of monthly installments, each of which earns compound interest for a different length of time depending on when it was deposited. The first installment earns interest for the full tenure, the second earns interest for one month less, and so on. This means the total maturity amount is the sum of compound interest calculations for each individual installment separately.

The formula applied to each monthly installment is the standard compound interest formula:

A = P × (1 + r/n)^(n × t)

Where:

• A = Maturity value of that individual installment
• P = Monthly deposit amount
• r = Annual interest rate as a decimal (e.g., 6% = 0.06)
• n = Compounding frequency per year — 4 for quarterly compounding, which is the standard used by most RD accounts
• t = Time in years that this particular installment remains invested

Since each of the monthly installments is deposited at a different time, t is different for each one. The first installment is invested for the full tenure (say, 5 years), the second for (5 years minus 1 month), the third for (5 years minus 2 months), and so on down to the final installment which earns interest for just one month.

Total Maturity Amount = Sum of A for all monthly installments

Total Invested = Monthly Deposit × Total Number of Months

Interest Earned = Total Maturity Amount − Total Invested

For example, a monthly deposit of $500 at 6% annual interest compounded quarterly over 1 year (12 installments):

• Installment 1: $500 × (1 + 0.06/4)^(4 × 1) = $500 × (1.015)^4 = $500 × 1.06136 = $530.68
• Installment 2: $500 × (1.015)^(4 × 11/12) = approximately $527.55
• …continuing down to the 12th installment which earns interest for just one month
• Total Invested = $500 × 12 = $6,000
• Maturity Amount = Sum of all 12 installment values = approximately $6,163.50
• Interest Earned = $6,163.50 − $6,000 = approximately $163.50

The exact result depends on the precise t value for each installment in the chain, which the calculator computes accurately for every month in the tenure.

How to Use It

Getting your maturity projection takes just seconds:

1. Enter your Monthly Deposit — the fixed amount you plan to deposit each month (e.g., $500)
2. Enter the Annual Interest Rate as a percentage (e.g., 6 for 6%)
3. Enter the Tenure in years (e.g., 3)
4. Click Calculate Maturity
5. View your Total Invested, Interest Earned, and Maturity Amount instantly

Why It’s Worth Using

Recurring deposits are popular precisely because they combine the discipline of regular saving with the guaranteed growth of compound interest — but most people open an RD without really knowing what the final number will be. Knowing the exact maturity amount upfront lets you make a more informed decision: whether the tenure and rate combination matches your savings goal, whether you need to increase your monthly deposit to reach a target amount, or whether a different financial product might give you better returns for the same monthly commitment.

The calculator is also useful for comparing different RD scenarios side by side. You can run it once for a 2-year tenure and again for a 3-year tenure to see exactly how much extra interest the additional year generates — which is often more than people expect and makes a compelling case for slightly longer tenures when the funds aren’t urgently needed.