How this calculator works
The annual return and compounding frequency become an equivalent monthly rate. Each month the balance grows at that rate and your contribution is added. The breakdown separates your starting amount, contributions and investment growth.
Worked example
With the example values below: Ending balance, $300,851 (after 20 years). Change any number above to run your own.
What you enter
| Input | Example |
|---|---|
| Starting amount | $10,000 |
| Monthly contribution | $500 |
| Annual rate of return | 7% |
| Years | 20 yrs |
| Compounding | Monthly |
Grow what this calculator projects.
TruthSayer AI sends quantitative stock signals across valuations, earnings and dark-pool activity, each one traded in its own funded account first.
Estimates for planning only, not financial, tax or legal advice. Tax tools use 2026 federal figures (brackets, $16,100 / $32,200 standard deduction, $19,000 gift exclusion, $15M lifetime exemption). Rates shown as defaults are examples; replace them with quotes you actually receive.