How a Recurring Deposit Grows

What does $2,000 a month turn into after two years at 7 percent? In a recurring deposit, the answer is $51,661.68, and $3,661.68 of that is interest. That extra money does not arrive evenly. Your first payment earns interest for 24 months, while your last payment earns for only one. This guide shows how that monthly rhythm builds the final payout.

What Happens to Each Monthly Payment Inside an RD?

Each payment becomes its own small savings pot that earns interest until the maturity date. Early payments sit in the account longest, so they grow the most. Late payments have little time left and add almost no interest.

Picture a two-year plan with 24 payments of $2,000 each. The first payment compounds for 24 months and grows to $2,299.61. The twelfth payment compounds for 13 months and reaches $2,157.09. The final payment gets one month of interest and ends at $2,011.67.

This is why an RD earns less than the rate suggests at first glance. A 7 percent rate on $48,000 sounds like big money. Yet the average payment spends only about half the term in the account, so the interest is far smaller.

A quick mental check makes this clear. The average payment stays in the account for 12.5 months. Simple interest on $48,000 at 7 percent for 12.5 months comes to $3,500. Monthly compounding adds another $161.68, which brings the total to $3,661.68.

Which Formula Turns $2,000 a Month Into $51,661.68?

Our calculator repeats one step every month: balance equals the old balance plus the new deposit, times one plus the monthly rate. After the last month, that balance is the maturity value.

Start by turning the yearly rate into a monthly rate. Divide 7 percent by 12 and you get about 0.5833 percent, or 0.005833 as a decimal. Each month, the new $2,000 joins the balance, and the whole amount grows by that small rate.

The loop has a shortcut. Maturity equals D x (1 + i) x ((1 + i)^n – 1) / i. Here D is the deposit, i is the monthly rate, and n is the number of months. With D = 2,000, i = 0.005833 and n = 24, the result is $51,661.68.

Notice the extra (1 + i) at the front. It appears because each deposit earns interest in the same month it arrives. That timing matches how our calculator runs the loop, so the shortcut and the loop give the same answer.

How Quickly Does the Interest Build Over the Term?

Interest starts slowly and speeds up, because the balance it works on keeps getting bigger. In the 24-month example, the first year earns $929.75. The second year earns $2,731.92, almost three times as much.

The payment size scales the result in a straight line. Doubling the deposit to $4,000 a month doubles the interest to $7,323.35. The rate matters too: the same plan matures to $50,581.72 at 5 percent and $52,769.77 at 9 percent.

Time has the strongest pull. Our tool page also runs $1,000 a month for 60 months at 8 percent, which matures to $73,966.70. That plan earns $13,966.70 of interest on $60,000 of deposits. To test your own amount, rate and term, open the recurring deposit maturity calculator and watch all three results update as you type.

Does Monthly or Quarterly Compounding Change the Payout Much?

The difference is small, usually a few dollars on a short plan. Our calculator compounds monthly. Some banks compound quarterly, which gives a slightly lower maturity value on the same deposits and rate.

Here is the gap for the 24-month example. Monthly compounding gives $51,661.68. A quarterly method, where each payment grows at 1.75 percent per quarter for its time in the account, gives $51,639.56. The difference is $22.12 over two years.

Small gaps like this explain most mismatches between a calculator and a bank statement. Banks also round interest each period and may count days rather than months. The SEC’s free investor calculator lets you switch between monthly and quarterly compounding to see this effect. Treat any calculator result as a close estimate, and confirm the exact figure with the bank before you commit.

Compounding frequency is one part of a bigger idea. For a full walk through interest earning interest, read our guide on how compound interest works.

Why Does a Lump Sum Beat the Same Money Paid Monthly?

A lump sum earns interest on the full amount from the first day. Monthly payments reach that full amount only at the very end. So at the same rate and term, the lump sum always earns more.

A certificate of deposit works the lump-sum way, holding a fixed amount for a fixed period. Compare the two with $48,000 in both cases. Deposited at once for 24 months at 7 percent, compounded monthly, it grows to $55,190.69. That is $7,190.69 of interest, against $3,661.68 from the monthly plan.

The gap grows with the rate and the term, since the lump sum has more time to pull ahead. That comparison only matters when you already hold the full amount. Most people choose an RD because the money arrives from each paycheck. For a side-by-side look at other fixed-term savings choices, see our guide to high-yield savings vs CD accounts.

How Is the Interest on a Recurring Deposit Taxed?

In the United States, most interest is taxable income in the year it becomes available to you. The IRS guidance in Topic 403 (reviewed September 2026) applies to deposit interest like RD earnings.

Our calculator shows the maturity value before any tax. Your take-home gain depends on your own tax rate, so treat $3,661.68 as the pre-tax interest. Rules in other countries differ, and some banks withhold tax at the source.

Timing matters on a multi-year plan. In the 24-month example, $929.75 of interest builds in year one and $2,731.92 builds in year two. Each tax year may then carry its own share, so check the statements your bank sends.

The IRS says a payer should send Form 1099-INT when your interest reaches $10 or more. You still report interest below that level. Safety is a separate question: federal deposit insurance covers at least $250,000 of your deposits at each insured bank.

FAQs About Recurring Deposits

Sources

This article explains how recurring deposits grow and is general education, not financial or tax advice. Rates, compounding and tax rules vary by bank and country. Reviewed for accuracy by Prof. Dr. Khalil Mudassar, PhD. Last updated September 27, 2026.