Financial
Investment Calculator
Project investment growth with regular contributions.
Inputs
Adjust the assumptions to match your scenario. Results update instantly.
Results
Primary outputs and comparison insights are built from the current inputs.
End balance
$58,785.61
Projected portfolio value.
Total deposited
$34,000.00
Initial plus all monthly additions.
Total earnings
$24,785.61
Growth from investment returns.
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How this Investment Calculator works
The Investment Calculator projects portfolio growth using an initial deposit, regular contributions, and expected returns. Enter initial investment, monthly addition, and annual return to estimate end balance, total deposited, and total earnings. The calculator updates instantly and adds a comparison table plus chart so you can test the sensitivity of the result before you use it in a decision.
Quick guide
Jump to the section you need, then return to the investment calculator.
Inputs
- Starting investment amount.
- Amount added every month.
- Expected annual rate of return.
- Investment time horizon.
Outputs
- Projected portfolio value.
- Initial plus all monthly additions.
- Growth from investment returns.
Assumptions
- Constant monthly addition and annual return.
- Returns are reinvested.
Tips
- Reinvesting dividends boosts compounding.
- Longer horizons tolerate more volatility.
Investment Calculator formula guide
Use these investment calculator formulas to audit the output or explain it to someone else.
1 formulas
Investment Calculator examples
Review a ready-made investment calculator scenario, copy it, then tweak inputs to match your case.
Example
Decade growth plan
Inputs
- Example input Initial investment: $15,000.00
- Example input Monthly addition: $300.00
- Example input Annual return: 7%
- Example input Years: 15
Outputs
- Example result End balance: $137,822.89
- Example result Total deposited: $69,000.00
- Example result Total earnings: $68,822.89
Most of the growth comes in the second half of the investment period.
Balance by time horizon
| Years | End balance | Total earnings |
|---|---|---|
| 5 | $29,593.83 | $7,593.83 |
| 10 | $58,785.61 | $24,785.61 |
| 15 | $102,276.86 | $56,276.86 |
| 20 | $167,072.11 | $109,072.11 |
| 25 | $263,607.04 | $193,607.04 |
Compounding accelerates over longer periods.
Growth over time
Focus point
5
$29,593.83
Position
#1 of 5
Original order
Share of total
4.76%
Total: $621,335.45
Compounding accelerates over longer periods.
References
- Future value of annuity formula
- Investment growth projection models
Learn more
Guides connected to the investment calculator
Use these short guides when you want the decision framework behind the numbers, not just the raw output.
Category guide
Financial Calculator Guide
Understand when to use payment, return, tax, and budgeting calculators so you can make cleaner money decisions.
Directly related
Articles that mention this calculator
FAQ
Investment Calculator FAQ
What does the Investment Calculator do?
The Investment Calculator projects portfolio growth using an initial deposit, regular contributions, and expected returns. Enter initial investment, monthly addition, and annual return to estimate end balance, total deposited, and total earnings. The calculator updates instantly and adds a comparison table plus chart so you can test the sensitivity of the result before you use it in a decision. It is part of our financial toolkit.
What inputs do I need?
Typical inputs include Starting investment amount., Amount added every month., Expected annual rate of return..
How are the results calculated?
We follow the formulas and assumptions outlined in the "How this calculator works" section. You will see outputs like Projected portfolio value., Initial plus all monthly additions., Growth from investment returns..
Can I share or download the results?
Use the Copy link or Print buttons to share your results. If a table or chart appears, you can download the data as CSV.
Is my data stored?
No. Calculations run in your browser and we do not store your inputs.
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