Future Value of Investment Calculator
Last Updated: March 22, 2026 · Reviewed for calculation logic · Educational use only · See methodology below
Estimate how investment growth compounds over time
Estimate how your investment could grow over time using a starting amount, recurring contributions, expected return, and compounding.
What this tool does
The Future Value of Investment Calculator helps you estimate how money may grow over time under a fixed return assumption. It shows how starting balance, recurring contributions, compounding frequency, and inflation can affect the result.
Calculator inputs
Future value setup
Calculation formulas
How this calculator is calculated
The calculator uses a fixed-return projection with recurring contributions and optional inflation adjustment.
Future value
Future value = starting balance compounded over time + recurring contributions
The calculator compounds the starting amount and adds recurring contributions on the schedule you choose.
Inflation-adjusted view
Inflation-adjusted value = future value ÷ (1 + inflation rate)^years
This shows the projected amount in today’s purchasing power using your selected inflation rate.
Data Summary
Summary: You start with US$10,000 and make US$500 monthly contributions, compounded monthly at 7% for 20 years. The projection ends at US$0.00 without inflation adjustment. Principal plus contributions total US$0.00, and growth is US$0.00.
Results
Results Overview
The projection updates as you change the inputs.
Future value
$292,465
Total invested
$130,000
Total growth
$162,465
Inflation-adjusted value
$178,483
Scenarios
Scenario comparison
Save different starting balances, contribution settings, and return assumptions to compare growth impact.
Disclaimer
This Future Value of Investment Calculator provides illustrative planning estimates only. It does not offer financial, investment, tax, or legal advice, and actual outcomes can differ because returns, contribution timing, fees, taxes, and inflation may all change the result. Read the full Financial Disclaimer and Terms of Use.
Graph Section
The chart visualizes your projected account balance, broken out by total contributions and investment growth for each period. Switch between bar, line, area, stacked bar, stepped line, and log scale line views to compare trends over time.
Yearly breakdown
Checkpoints help you see how much comes from your own contributions and how much comes from growth.
Mobile-friendly horizontal scroll
| Year | Total contributed | Estimated balance | Estimated growth | Inflation-adjusted balance |
|---|---|---|---|---|
| 1 | $16,000 | $16,890 | $890 | $16,478 |
| 2 | $22,000 | $24,263 | $2,263 | $23,094 |
| 3 | $28,000 | $32,151 | $4,151 | $29,856 |
| 4 | $34,000 | $40,592 | $6,592 | $36,774 |
| 5 | $40,000 | $49,623 | $9,623 | $43,860 |
| 6 | $46,000 | $59,287 | $13,287 | $51,123 |
| 7 | $52,000 | $69,627 | $17,627 | $58,575 |
| 8 | $58,000 | $80,692 | $22,692 | $66,227 |
| 9 | $64,000 | $92,530 | $28,530 | $74,091 |
| 10 | $70,000 | $105,197 | $35,197 | $82,180 |
| 11 | $76,000 | $118,751 | $42,751 | $90,506 |
| 12 | $82,000 | $133,254 | $51,254 | $99,082 |
| 13 | $88,000 | $148,772 | $60,772 | $107,922 |
| 14 | $94,000 | $165,376 | $71,376 | $117,041 |
| 15 | $100,000 | $183,143 | $83,143 | $126,454 |
| 16 | $106,000 | $202,153 | $96,153 | $136,175 |
| 17 | $112,000 | $222,494 | $110,494 | $146,222 |
| 18 | $118,000 | $244,258 | $126,258 | $156,610 |
| 19 | $124,000 | $267,547 | $143,547 | $167,358 |
| 20 | $130,000 | $292,465 | $162,465 | $178,483 |
How future value is calculated
This calculator keeps the method simple so the result is easy to read and compare.
Calculation formulas
Future value calculation
The calculator uses a fixed-return model and applies recurring contributions on the schedule you choose. Inflation is optional and only changes the purchasing-power view.
Starting amount
Starting balance grows at the selected return rate over time.
The initial investment is compounded from the first period until the end of the projection.
Variables
- P: starting amount
- r: annual return rate as a decimal
- n: compounding periods per year
- t: time in years
Recurring contributions
Each scheduled contribution is added on the selected schedule and then allowed to compound.
Monthly contributions are added every month. Yearly contributions are added once per year.
Inflation adjustment
Inflation-adjusted value = future value ÷ (1 + inflation rate)^years
This restates the result in today’s purchasing power. It is a planning estimate, not a forecast of real-world returns or prices.
Simple method
- Start with the initial investment amount.
- Add recurring contributions on the frequency you selected.
- Apply compound growth using the expected annual return and compounding frequency.
- Compare the final balance with your total contributions to see how much came from growth.
- Optional inflation shows the same result in today’s purchasing power.
Example scenario
A starting balance of $10,000, monthly contributions of $500, and a 7% annual return over 20 years gives a practical view of how much comes from saving and how much comes from growth.
You can use the same setup to compare shorter or longer time periods, or switch to yearly contributions if you want a simpler projection.
What this tool does
The Future Value of Investment Calculator estimates potential investment growth over time using a starting amount, recurring contributions, an assumed annual return, and a chosen time period.
It demonstrates how key factors of long-term growth interact within a single projection. These key factors are: initial investment, regular contributions, annual return, compounding frequency, investment length, and optional inflation adjustment.
- regular contributions
- annual return
- compounding frequency
- investment length
- optional inflation adjustment
The result is an estimate based on the values you enter. Next, here is how the calculator processes and arrives at these totals.
How it works
The calculator begins with the initial investment and applies the selected annual return over the specified time period.
If recurring contributions are included, they are added according to the selected frequency. Monthly contributions are distributed throughout the year, while yearly contributions are added once annually.
The calculator then estimates:
- future value
- total contributions
- total growth
- inflation-adjusted value, if inflation is used
This structure clarifies how the ending balance accumulates over time. Understanding how these calculations work highlights why changing input values affects the final result.
Why results change
The estimated future value can change significantly if any of the main inputs are adjusted. higher starting balance increases the base amount used for growth. Larger recurring contributions increase the amount invested over time. A longer time period gives compounding more time to build. A higher return rate increases projected growth, while a lower rate reduces it.
Compounding frequency also affects the estimate. More frequent compounding applies growth more often within the model.
Since these inputs interact, even small changes can lead to noticeable differences over time. Next, it's helpful to see how the calculator separates contributions from growth for further clarity.
Contributions and growth
This tool separates total contributions from estimated growth to make results easier to understand. These are the amounts added by the user, including the starting balance and any recurring investments.
Total growth is the estimated amount generated by the assumed return over time.
This hThis distinction highlights the difference between direct investments and growth generated within the projection. position-adjusted value
What the results show
If inflation is included, the calculator also provides an inflation-adjusted result.
This gives a simplified view of the estimated future value in today’s purchasing power, providing context for long-term projections by illustrating how money’s value can change over time. The figure is still based on fixed assumptions and should be read as an estimate.
Depending on the inputs used, the calculator may display:
- projected future value
- total contributions
- estimated total growth
- inflation-adjusted future value
- yearly breakdown of balance, contributions, and growth
These outputs are intended to make long-term investment growth easier to interpret and compare. Please note some important caveats regarding the calculator’s approach.e.
Important note
This calculator uses a simplified fixed-return approach. It does not account for market volatility, changing returns, taxes, fees, or irregular contribution patterns unless these are reflected in the inputs.
Results should be viewed as estimates based on the numbers entered. They are intended for general planning and educational purposes, not as guaranteed outcomes.
Related tools
If you want to compare this estimate with other planning tools, try the Compound Interest Calculator for a closely related compounding view, then use Dividend Reinvestment Projector to explore reinvested dividend growth, or Investment Fee Erosion Calculator to see how fees can affect long-term results. You can also check the Rule of 72 Calculator for a quick doubling-time estimate, or the Cost of Delay Calculator if you want to compare delayed investing outcomes. For more reading, see What Is Compound Interest and How Does It Work? for the basics, How to Use a Rule of 72 Calculator for a practical shortcut, and How to Use an Investment Fee Erosion Calculator for a closer look at fee impact.
About the author
This content was authored by Anto George, a Software Engineer at Buddy Soft Solutions Pvt. Ltd. He specialises in financial applications and finance-focused calculation tools, with experience building Windows and web applications on the .NET platform and SQL Server since 2007. These tools are designed as mathematical and educational utilities and do not provide regulated financial advice.
Sources and Methodology
This tool is based on general investing and compounding concepts commonly used in financial education. It estimates how money may grow over time using a starting balance, recurring contributions, an assumed rate of return, and compound growth logic. The sources below were used to support the calculator’s educational explanations, methodology framing, and user guidance. This tool is intended for general planning and informational use only and does not provide investment advice.
- SEC (Investor.gov) - Future Value: Investor.gov glossary entry
- SEC (Investor.gov) - Compound Interest: Investor.gov glossary entry
- SEC (Investor.gov) - Compound Interest Calculator: Investor.gov calculator and methodology reference
- FINRA - Investing: FINRA investor education overview
- FINRA - Tools and Calculators: FINRA planning tools reference
- Fidelity - What is compound interest?: Fidelity Learning Center explainer
- Fidelity - Power of compounding and consistent investing: Fidelity investor education resource
FAQs
Common questions
What is future value in investing?
Future value is the estimated amount an investment may be worth at the end of a chosen time period based on a starting balance, contributions, and an assumed return.
How does compound growth affect investment value?
Compound growth adds returns on top of earlier returns, so the balance can grow faster over time than a simple straight-line estimate.
What is the difference between contributions and investment growth?
Contributions are the money you put in yourself. Growth is the increase generated by the assumed return on top of those contributions.
Why is the result only an estimate?
Because real markets do not grow at a fixed rate every year. The calculator uses a constant return assumption so you can compare scenarios consistently.
Should I include inflation in my projection?
If you want a view of today’s purchasing power, yes. Inflation helps show what the projected value might mean in real terms instead of just nominal dollars.
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Disclaimer: These tools are for educational purposes only and do not provide financial advice.