Estimate how an investment may grow over time with recurring contributions
| Item | Result |
|---|---|
| Starting Investment | $0.00 |
| Total Contributions | $0.00 |
| Total Invested | $0.00 |
| Investment Gain | $0.00 |
| Return on Invested Money | 0.00% |
| Inflation-Adjusted Balance | $0.00 |
This projection assumes a constant rate of return and does not include taxes, investment fees, or market volatility.
Investment Growth Schedule
| Year | Starting Balance | Contributions | Investment Gain | Ending Balance |
|---|
Estimate investment growth responsibly
An investment projection combines the starting balance, contributions, time, and an assumed return. It can illustrate how consistency and compounding may affect a long-term goal, but it is not a forecast of what a market account will earn. Actual returns vary from year to year and losses are possible.
Use several scenarios. A conservative estimate can test whether the plan still works with weaker returns, while a higher scenario shows sensitivity rather than a promise. Compare the ending value with total contributions to understand how much of the projection comes from assumed growth.
How to use this calculator
- Enter the current investment value and planned recurring contribution.
- Select a time horizon that matches the goal rather than the product being considered.
- Use a net return assumption after considering likely fees.
- Review nominal value, inflation-adjusted value, contributions, and estimated gain separately.
How the calculation works
A lump sum can be modeled as A = P(1+r/n)^(nt). Regular contributions are added as a future-value series, adjusted for whether deposits occur at the beginning or end of each period. Inflation-adjusted value discounts the future amount by an assumed inflation rate.
A practical example
Starting with $10,000 and adding $300 monthly for 20 years produces total contributions of $82,000. At a steady 7% annual return, the projected balance is roughly $183,000 before taxes and fees. The actual path would not be smooth and may finish above or below that amount.
How to use the result in a real decision
Judge the projection by whether the plan remains workable under less favorable assumptions. If the goal succeeds only with an unusually high return, increase contributions, extend the timeline, or reduce the target instead of relying on additional risk. Match the investment horizon to the goal and preserve cash needed soon. The result should support a diversified, cost-aware plan; it should not be used to select a security or to imply that past market averages will repeat.
Ways to make the estimate more useful
- Use returns after recurring fund and advisory fees when possible.
- Test the effect of starting earlier or increasing contributions gradually.
- Keep short-term money out of volatile investments if it will be needed soon.
- Consider diversification, taxes, inflation, and risk tolerance alongside projected return.
Frequently asked questions
Is the investment return guaranteed?
No. The return is an assumption used to explore a scenario, and market investments can lose value.
Why show an inflation-adjusted result?
It estimates the future balance in today's purchasing power, which can be more useful for long-term goals.
Should fees be deducted from the return?
Using an estimated return after fees usually produces a more realistic projection.
NumbersHub educational guide. Review calculator assumptions before relying on an estimate.