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Investment Calculator

Use this investment calculator to model growth, return, or time-value scenarios for investment.

Primary answer
Future value
Inputs to verify
Initial investment, Contribution per period, and Contribution frequency
Use type
Use as a review-only estimate; verify before relying on it.
Keyword intent
investment calculator

Calculator

Investment Calculator

Calculates future value from initial investment, contribution per period, contribution frequency. Defaults are filled in so you can review a working example before changing inputs.

USD

Starting amount already invested. Use the same currency for all money inputs.

USD

Fixed contribution made at each selected period.

Frequency used for both contributions and effective period conversion.

%

User-entered annual return scenario. Enter 6 for 6%, not 0.06.

years

Time horizon. It must resolve to a whole number of selected contribution periods.

Whether each contribution is made at the beginning or end of the period.

Result

Result reflects the current submitted inputs.

  • Risk C
  • Reviewed 2026-05-26
  • 5 sources
Future value99,145.2 USD
Total contributed70,000 USD
Investment growth29,145.2 USD
Effective period rate0.48675506%
Periods120

Breakdown

Periods per year
12
Contribution timing
end
  • The annual return is a fixed user-entered scenario assumption, not a forecast or guarantee.
  • The contribution frequency is also the period used for effective rate conversion.
  • Contributions are equal and occur at either the beginning or end of each period.
  • Taxes, inflation, fees, withdrawals, volatility, and market data are excluded.
  • This is educational scenario math, not investment, tax, or financial advice.

Accuracy notes

Risk level
C
Reviewed
2026-05-26
Sources
5
Primary result
Future value

Formula logic is kept in a pure calculator module with fixtures, source notes, and page-visible assumptions.

High-risk estimate

Educational estimate, not advice

This finance calculator is for educational estimates only. It is not financial advice, a lender quote, investment advice, tax advice, legal advice, or a substitute for reviewing actual contracts, disclosures, rates, fees, and local rules.

Check the reviewed sources, assumptions, and formula limits before using this result for a financial, health, or safety decision.

Review cadence: 12 months; next review due 2027-05-26.

Categories

What the result means

Future value is the number to carry forward from this investment calculation. Estimated value at the end of the scenario. Read the projected value or rate first, then use contribution, period, and return outputs to explain why it changed. Use total contributed, investment growth, and effective period rate to explain why future value moved when an input changed. Change one assumption at a time so you can see which input is driving the projection.

Future valueEstimated value at the end of the scenario.
Total contributedInitial investment plus all periodic contributions.
Investment growthFuture value minus total contributed.
Effective period rateAnnual return converted to the selected contribution period.

Use the result this way

  1. Start with Future value, then use supporting outputs only to explain the primary answer.
  2. Verify initial investment, contribution per period, and contribution frequency before copying the result.
  3. Choose the mode or method first because it can change which formula is applied, keep units consistent with the labels shown in the form, and stay within the documented minimum and maximum ranges.
  4. Change one assumption at a time so you can see which input is driving the projection.

User job

How to use this calculator

Use Investment Calculator when you need future value, then use total contributed and investment growth to check the context for planning conversations, quote comparisons, payment checks, and scenario review.

Best for

  • Comparing one financial scenario with another
  • Preparing questions for a lender, advisor, or statement review
  • Reviewing a default example before entering your own initial investment and contribution per period.

Check before relying

  • Verify rates, fees, timing, taxes, and local rules against official documents before acting.
  • The annual return is a fixed user-entered scenario assumption, not a forecast or guarantee.
  • The contribution frequency is also the period used for effective rate conversion.
  • Source context: OpenStax, reviewed 2026-05-26.

Next useful step

  • Mutual Fund CalculatorUse next when you need ending value after costs from initial investment and contribution per period after checking future value.
  • Annuity CalculatorUse next when annuity uses starting amount and payment per period after checking future value.
  • Annuity Payout CalculatorUse next when you need payout per period from present value and annual rate assumption after checking future value.

Limits of this estimate

  • Supports compound-growth scenario math only; it excludes market forecasts, volatility, inflation, taxes, fees, withdrawals, product selection, and investment suitability.
  • The result depends on user-entered inputs and the documented assumptions; defaults are examples only.
  • Search indexing approval does not downgrade this page from risk level C or turn the result into professional advice.

Formula

Future value equals the compounded initial investment plus the future value of equal periodic contributions using an effective period rate derived from the user-entered annual return. Key assumptions: The annual return is a fixed user-entered scenario assumption, not a forecast or guarantee. The contribution frequency is also the period used for effective rate conversion. Contributions are equal and occur at either the beginning or end of each period.

  • Future value equals the compounded initial investment plus the future value of equal periodic contributions using an effective period rate derived from the user-entered annual return.
  • The annual return is a fixed user-entered scenario assumption, not a forecast or guarantee.
  • The contribution frequency is also the period used for effective rate conversion.
  • Primary source context: OpenStax.

Inputs

Enter initial investment, contribution per period, contribution frequency, and annual return assumption for planning conversations, scenario checks, and lender or statement comparison. Before calculating, choose the mode or method first because it can change which formula is applied, keep units consistent with the labels shown in the form, and stay within the documented minimum and maximum ranges. Initial investment: Starting amount already invested. Use the same currency for all money inputs. Contribution per period: Fixed contribution made at each selected period. Contribution frequency: Frequency used for both contributions and effective period conversion.

Initial investmentStarting amount already invested. Use the same currency for all money inputs.
Contribution per periodFixed contribution made at each selected period.
Contribution frequencyFrequency used for both contributions and effective period conversion.
Annual return assumptionUser-entered annual return scenario. Enter 6 for 6%, not 0.06.
YearsTime horizon. It must resolve to a whole number of selected contribution periods.
Contribution timingWhether each contribution is made at the beginning or end of the period.

Example

Using the default inputs, Investment Calculator returns future value of 99,145.2 USD. Adjust initial investment, contribution per period, contribution frequency, and annual return assumption to match your own scenario.

FAQ

How is future value calculated here?

Future value equals the compounded initial investment plus the future value of equal periodic contributions using an effective period rate derived from the user-entered annual return. The first assumption to check is: The annual return is a fixed user-entered scenario assumption, not a forecast or guarantee.

What does Future value mean for investment?

Read the projected value or rate first, then use contribution, period, and return outputs to explain why it changed. Secondary values such as total contributed, investment growth, and effective period rate are there to explain the primary answer, not to replace it.

What should I enter for Initial investment?

Starting amount already invested. Use the same currency for all money inputs. Use USD for this field. Choose the mode or method first because it can change which formula is applied, keep units consistent with the labels shown in the form, and stay within the documented minimum and maximum ranges.

How does Contribution per period change future value?

Fixed contribution made at each selected period. Changing it can alter future value because the formula uses the submitted inputs together. Also compare nominal versus effective rate, contribution timing, compounding frequency, inflation, fees, and tax treatment.

Why does the investment example show 99,145.2 USD for future value?

The default inputs produce 99,145.2 USD for future value. Treat that as a format and scale check, then replace every default value with your own inputs.

Can the investment result replace financial advice?

No. Use the investment result as comparison context only. Market returns, taxes, fees, legal terms, and personal constraints can change the real outcome.

Sources

Last reviewed: 2026-05-26

  • academicReviewed 2026-05-26 · Source Undated page, accessed 2026-05-26
    Principles of Finance: Time Value of Money BasicsOpenStax. Future value of a present amount and period-rate compounding assumptions.
    Scope
    Open educational finance reference for future value and compounding concepts.
    Supports
    Future value of a present amount and period-rate compounding assumptions.
    Limits
    Supports compound-growth scenario math only; it excludes market forecasts, volatility, inflation, taxes, fees, withdrawals, product selection, and investment suitability.
  • academicReviewed 2026-05-26 · Source Undated page, accessed 2026-05-26
    Principles of Finance: AnnuitiesOpenStax. Future value of a fixed stream of equal periodic contributions.
    Scope
    Open educational finance reference for ordinary annuity and annuity due timing.
    Supports
    Future value of a fixed stream of equal periodic contributions.
    Limits
    Supports compound-growth scenario math only; it excludes market forecasts, volatility, inflation, taxes, fees, withdrawals, product selection, and investment suitability.
  • reputableReviewed 2026-05-26 · Source Undated page, accessed 2026-05-26
    FV functionMicrosoft Support. Input contract for rate, number of periods, payment, present value, and payment timing.
    Scope
    Spreadsheet function reference for future value from constant payments and constant rate.
    Supports
    Input contract for rate, number of periods, payment, present value, and payment timing.
    Limits
    Supports compound-growth scenario math only; it excludes market forecasts, volatility, inflation, taxes, fees, withdrawals, product selection, and investment suitability.
  • officialReviewed 2026-05-26 · Source Undated page, accessed 2026-05-28
    Compound Interest CalculatorInvestor.gov, U.S. Securities and Exchange Commission. Compound-growth framing, scenario assumptions, and investor-facing educational scope.
    Scope
    Investor education calculator reference for compound growth scenarios with contributions and user-entered assumptions.
    Supports
    Compound-growth framing, scenario assumptions, and investor-facing educational scope.
    Limits
    Does not forecast returns, recommend investments, model taxes or fees, or provide market data for this calculator.
  • officialReviewed 2026-05-26 · Source Undated page, accessed 2026-05-28
    What is Risk?Investor.gov, U.S. Securities and Exchange Commission. Risk rationale and disclaimer boundaries for user-entered investment return scenarios.
    Scope
    Investor protection reference explaining uncertainty and potential financial loss in investment decisions.
    Supports
    Risk rationale and disclaimer boundaries for user-entered investment return scenarios.
    Limits
    Used for risk context only; it does not validate any expected return, product allocation, or suitability decision.

Disclaimer

This finance calculator is for educational estimates only. It is not financial advice, a lender quote, investment advice, tax advice, legal advice, or a substitute for reviewing actual contracts, disclosures, rates, fees, and local rules.