What Does Investing Just $100 a Month Do in 25 Years?
Investing just $100 per month for 25 years at 7% grows to approximately $81,000 — more than the $30,000 contributed.
How to use this tool
- Enter starting amount, monthly contribution, annual return rate and years in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your final balance and the full breakdown beneath it.
Even small $100 monthly contributions can grow significantly through the power of compound interest over 25 years.
Frequently asked questions
- Is the contribution added monthly?
- Yes — your monthly amount is added every month and compounds at one-twelfth of the annual rate.
- What return rate should I use?
- Long-run global stock returns have averaged roughly 7% after inflation, but future returns are not guaranteed. Try a range to see best/worst cases.