What Is the Monthly Interest Payout Deposit Calculator?
A monthly interest payout deposit is a savings or fixed deposit product where the interest you earn is paid out to you every month rather than being reinvested. This calculator helps you quickly estimate how much income you will receive each month from a given deposit amount at a stated annual interest rate.
How to Use It
Enter the deposit amount (your principal) and the annual interest rate as a percentage. The calculator instantly shows your monthly interest payout, along with the equivalent total annual interest for reference.
The Formula Explained
The calculation uses simple interest spread evenly across the year. First, the annual rate percentage is converted to a decimal (for example, 6% becomes 0.06). The annual interest equals principal times rate. Dividing that annual interest by 12 gives the monthly payout:
$$\text{Monthly Interest} = \dfrac{P \times r}{12}$$
Worked Example
Suppose you deposit 100,000 at an annual rate of 6%. The annual interest is \(100{,}000 \times 0.06 = 6{,}000\). Dividing by 12 gives a monthly payout of \(6{,}000 \div 12 = 500\). So you would receive 500 each month while your principal stays intact.
Monthly Payout Across Different Deposits and Rates
The monthly interest payout on a fixed deposit is calculated by applying the annual rate to the principal and dividing by 12:
$$\text{Monthly Interest} = \frac{P \times \dfrac{r}{100}}{12}$$The table below shows the gross monthly payout for several common principal amounts at annual rates of 4%, 6%, and 8%. For example, a deposit of 100,000 at 6% pays 500.00 per month.
| Principal | 4% / year | 6% / year | 8% / year |
|---|---|---|---|
| 50,000 | 166.67 | 250.00 | 333.33 |
| 100,000 | 333.33 | 500.00 | 666.67 |
| 500,000 | 1,666.67 | 2,500.00 | 3,333.33 |
| 1,000,000 | 3,333.33 | 5,000.00 | 6,666.67 |
Notice that the monthly payout scales linearly: doubling the principal doubles the payout, and so does doubling the rate. Each figure is simply the annual interest \(P \times r/100\) spread evenly across 12 months.
Interpreting Your Monthly Payout
The amount shown by this calculator is a gross, pre-tax figure. It is the simple interest generated by your principal at the stated nominal annual rate, divided evenly into 12 equal monthly payments. A few important points to keep in mind:
- Taxes and withholding are not included. Many jurisdictions deduct tax at source (for example TDS in India or withholding tax elsewhere) before crediting interest. Your actual net receipt may be lower than the gross figure shown here.
- Nominal rate vs effective yield. Because a monthly-payout deposit pays interest out each month rather than reinvesting it, the quoted nominal rate is the relevant figure here. A deposit that instead compounds the interest would produce a higher effective annual yield on the same nominal rate. If you want to compare against a reinvesting product, see a compound interest calculator.
- The principal is returned at maturity. Monthly-payout deposits pay only the interest each month; the original principal stays on deposit and is returned to you when the term ends. The payout does not reduce your balance.
- Rates may differ from advertised yields. Institutions sometimes advertise an annual percentage yield (APY) that already accounts for compounding. Enter the plain nominal annual rate here for an accurate monthly payout.
This section is general information only and is not financial, tax, or investment advice. Confirm rates, payout terms, and applicable taxes with your financial institution.
Key Terms Explained
- Principal
- The original sum of money you deposit. Interest is calculated on this amount, and it is returned to you in full at maturity (for a payout-style deposit).
- Nominal annual interest rate
- The stated yearly rate of interest, expressed as a percentage, before any compounding or tax effects are considered. It is the rate entered into this calculator.
- Monthly interest payout
- The interest credited to you each month, equal to the annual interest \((P \times r/100)\) divided by 12. Because it is paid out rather than reinvested, the monthly amount stays constant for the term.
- Fixed deposit (FD)
- A deposit placed with a bank or institution for a fixed term at a fixed rate. A monthly-payout FD pays interest each month while keeping the principal locked until maturity.
- Maturity
- The end of the deposit's agreed term, when the contract concludes and the principal is returned. For a payout deposit, all interest has already been paid out month by month.
- Simple vs compound interest
- Simple interest is calculated only on the original principal, so each period earns the same amount — this is what a monthly-payout deposit uses. Compound interest adds earned interest back to the balance so future interest is calculated on a growing total, producing a higher effective yield over time.
FAQ
Does the principal change? No. In a monthly payout deposit the interest is withdrawn each month, so the principal remains the same throughout the term.
Is this simple or compound interest? This calculator assumes simple monthly payouts, since the interest is paid out and not reinvested. If interest were reinvested, compounding would apply.
What rate should I enter? Use the nominal annual interest rate quoted by your bank or financial institution, entered as a percentage.
