Maturity Value Calculator

Calculate the Final Maturity Value of Your Investment

Maturity Value Formula

Formula

\[ A = P \times \left(1 + \frac{r}{100}\right)^{n} \]

Where:

$A$ — maturity value of the investment at the end of the term
$P$ — principal amount (the initial investment)
$r$ — annual interest rate (in percent)
$n$ — number of years the money stays invested

This formula applies compound interest with annual compounding: each year the interest earned is added to the balance, and the following year's interest is calculated on the larger amount.

Maturity Value – Calculation Example

Example: you invest $10,000 at an annual interest rate of 5% for 5 years, with interest compounded once per year.

\[ A = 10{,}000 \times \left(1 + \frac{5}{100}\right)^{5} = 10{,}000 \times 1.05^{5} \approx 12{,}762.82 \]

Result: the maturity value is approximately $12,762.82, meaning the investment earned $2,762.82 in interest over 5 years.

How to Use the Maturity Value Calculator

Enter the Principal Amount — the initial sum you invest or deposit.
Enter the Annual Interest Rate as a percentage (for example, enter 5 for 5%, not 0.05).
Enter the Number of Years the money will remain invested until maturity.
Read the Maturity Value — the total amount you will have at the end of the term, including all compounded interest.

What Is Maturity Value?

Maturity value is the total amount an investment is worth at the end of its term. It consists of the original principal plus all the interest accumulated over the holding period. When interest compounds annually, the interest earned in each year is added to the balance, so subsequent interest is earned on an increasingly larger base — this is what distinguishes compound interest from simple interest, where interest is always calculated on the principal alone.

The concept applies to many financial products: fixed deposits and certificates of deposit that pay out at maturity, zero-coupon bonds, savings bonds, and growth-oriented investment accounts. If you know the maturity value in advance, you can compare offers from different institutions and plan around a known future payoff.

How to interpret the result: the difference between the maturity value and the principal is your total interest income. For instance, in the example above, $10,000 grows to $12,762.82, so $2,762.82 is earned interest. A useful sanity check is the Compound Annual Growth Rate, which expresses the same growth as a smoothed yearly rate and lets you compare investments of different lengths.

Assumptions, Limitations and Practical Tips

Annual compounding only. The calculator compounds interest once per year. If your deposit compounds monthly, quarterly, or daily, the actual maturity value will be slightly higher. To compare rates quoted with different compounding frequencies on a like-for-like basis, convert them first with the Annual Percentage Yield calculator.
Fixed rate assumed. The result is exact only if the interest rate stays constant for the whole term. Variable-rate products and market-linked investments will not follow this projection.
No taxes, fees, or withdrawals. The calculation assumes interest is reinvested and nothing is withdrawn before maturity. Early withdrawals usually reduce the effective return through penalties or rate cuts.
Interest is not inflation-adjusted. The maturity value is a nominal figure. To understand what it will buy in the future, consider the erosion of purchasing power separately.
Single lump sum only. This calculator handles one initial deposit. For products that pay out or receive regular amounts, see the Monthly Income Deposit or the Bond Present Value calculators.

As a rule of thumb, the maturity value is most sensitive to the interest rate and the time horizon: doubling the term more than doubles the interest earned, because compounding accelerates over time. That is why even a small rate difference matters a lot for long-term deposits.

Frequently Asked Questions

How do I calculate maturity value by hand?

Use the compound interest formula $A = P \times (1 + r/100)^n$. Take the annual growth factor $1 + r/100$, raise it to the power of the number of years, then multiply by your principal. For example, $5,000 at 4% for 10 years: $5{,}000 \times 1.04^{10} \approx 7{,}401.22$. A calculator with an exponent key (usually labeled $x^y$ or ^) makes this quick, or you can multiply the factor by itself n times.

What is the difference between maturity value and simple interest?

With simple interest, interest is calculated only on the original principal: $A = P \times (1 + r \times n / 100)$. With compound interest, each year's interest is added to the balance, so later years earn interest on interest. Over the same term, compounding always produces a higher maturity value, and the gap widens as the term lengthens. At 6% for 20 years, $10,000 grows to $22,000 with simple interest but about $32,071 with annual compounding.

Can I use this calculator for monthly or quarterly compounding?

Not directly — this tool assumes interest compounds once per year. If your bank compounds monthly, quarterly, or daily, the actual maturity value will be slightly higher. For other frequencies, use $A = P \times (1 + r/(100m))^{n \times m}$, where $m$ is the number of compounding periods per year (12 for monthly, 4 for quarterly, 365 for daily). Alternatively, convert the quoted rate to an annual percentage yield first.

What is a good maturity value for my investment?

There is no universal "good" value — it depends on your principal, rate, and term. A useful benchmark is the Rule of 72: dividing 72 by your interest rate approximates the years needed for your money to double. At 6%, money doubles in roughly 12 years. Compare maturity values against prevailing rates for similar products, such as government bonds or certificates of deposit, to judge whether an offer is competitive. Rates above inflation mean real growth in purchasing power.

Does the maturity value include the principal?

Yes. Maturity value is the total amount you receive at the end of the term: the original principal plus all accumulated interest. To find just the interest earned, subtract the principal from the maturity value. For example, if $8,000 grows to $9,769 over 4 years at 5%, the interest income is $1,769. Keep this in mind when comparing offers — a headline "payout" figure often includes the principal, not only the profit.

Why is my bank's maturity value different from the calculator's result?

Common reasons include a different compounding frequency (monthly or daily instead of annual), a variable rate that changed during the term, taxes withheld from interest, fees, or an early withdrawal penalty. Also check whether the rate is quoted as a nominal annual rate or as an annual percentage yield (APY) — these differ whenever compounding happens more than once a year. Verify all terms in your deposit agreement.

How does inflation affect the maturity value?

The calculator returns a nominal figure — it ignores inflation. To estimate real purchasing power, discount the result: divide the maturity value by $(1 + i/100)^n$, where $i$ is the average annual inflation rate. For instance, $12,000 after 5 years at 3% inflation is worth about $10,341 in today's money. If your interest rate barely exceeds inflation, your real gain may be small even though the nominal number looks impressive.