Maturity Value Calculator
Enter your principal, annual interest rate, term, and compounding frequency to find the maturity value of a fixed deposit, certificate of deposit, savings bond, or promissory note. Choose between simple and compound interest, and switch between annual, semiannual, quarterly, monthly, or daily compounding. The result updates instantly, with a full worked-step panel and a year-by-year growth chart.
What is maturity value?
Maturity value is the total amount returned to an investor or depositor at the end of a fixed term. It equals the original principal plus all the interest accumulated during the holding period. You encounter it whenever you open a certificate of deposit, a fixed deposit account, a savings bond, or any other instrument that pays a stated rate over a defined term. The maturity value is what the bank, issuer, or counterparty agrees to pay you on a specific date in the future.
Simple interest vs compound interest
With simple interest, interest is calculated only on the original principal for every period. The formula is MV = P x (1 + r x t), where P is the principal, r is the annual rate as a decimal, and t is the term in years. With compound interest, the interest earned in each period is added to the balance, and future interest is calculated on the new, larger amount. The formula is MV = P x (1 + r/n)^(n x t), where n is the number of compounding periods per year. For a given rate and term, compound interest always produces a higher maturity value than simple interest.
Compounding frequency and APY
The more often interest is compounded, the higher the effective annual yield (APY). A 5% nominal rate compounded monthly produces an APY of about 5.116%, while the same rate compounded annually yields exactly 5.000%. The difference grows with both the rate and the term. Comparing accounts using their APY rather than their stated nominal rate is the fairest apples-to-apples measure. The APY formula is: APY = (1 + r/n)^n - 1.
Common uses of this calculator
This tool is designed for fixed-term instruments where the rate, term, and principal are all known in advance. Common examples include fixed deposits and recurring deposits at banks, US Treasury bills, savings bonds and premium bonds, short-term commercial notes, and held-to-maturity corporate bonds. It is not intended for variable-rate products, floating-rate notes, or instruments with irregular cash flows such as mortgage-backed securities. For equity-type investments, a compound annual growth rate or future value of a series calculator is more appropriate.
Compounding frequency and effective annual rate (APY)
| Frequency | Periods/year | Effective Rate (5% nominal) |
|---|---|---|
| Annually | 1 | 5.000% |
| Semiannually | 2 | 5.063% |
| Quarterly | 4 | 5.095% |
| Monthly | 12 | 5.116% |
| Daily | 365 | 5.127% |
How a 5% nominal annual rate translates into an effective annual rate at different compounding frequencies.
Frequently asked questions
What is the maturity value formula?
For compound interest: MV = P x (1 + r/n)^(n x t), where P is the principal, r is the annual rate as a decimal (e.g. 0.05 for 5%), n is the number of compounding periods per year, and t is the term in years. For simple interest: MV = P x (1 + r x t). Both formulas give the total amount you receive at the end of the term, including principal.
What is the difference between maturity value and face value?
Face value (also called par value or principal) is the original amount deposited or the stated denomination of a bond. Maturity value is face value plus all accumulated interest. For a zero-coupon bond or a non-interest-paying note, the two can differ significantly. For a bank fixed deposit, the maturity value is what you receive when the FD matures.
How does compounding frequency affect the maturity value?
More frequent compounding increases the maturity value because interest is calculated on a growing balance more often. Daily compounding produces the highest maturity value for a given nominal rate, while annual compounding produces the lowest. The difference is captured by the effective annual rate (APY): a 5% nominal rate compounded monthly has an APY of about 5.116%, not exactly 5%.
Does this calculator account for taxes or inflation?
No. The result shown is the gross maturity value before any tax deducted at source, income tax, capital gains tax, or inflation adjustment. Interest income is usually taxable in the year it is credited or at maturity, depending on the instrument and your jurisdiction. Always consult a tax professional for the after-tax return.
Can I use this for a fixed deposit in months?
Yes. Select 'Months' from the term-unit dropdown and enter the number of months (e.g. 18 for an 18-month FD). The calculator converts it to years internally and applies the correct compounding logic. Fractional years such as 1.5 also work if you prefer to enter the term as years.
What is the effective annual rate (APY)?
The effective annual rate, also called the annual percentage yield (APY), is the actual return per year after compounding is applied. It equals (1 + r/n)^n - 1, where r is the nominal rate and n is the number of compounding periods per year. For simple interest, the APY equals the nominal rate because there is no compounding. The APY is the most transparent way to compare products with different compounding schedules.