Investment Calculator

See how your investment could grow with regular monthly contributions.

How this calculator works

The balance compounds monthly and contributions are added at the end of each month. Real returns vary and are not guaranteed.

Frequently asked questions

What return should I assume?

Long-run US stock market returns have averaged roughly 7% to 10% a year before inflation, but future returns are uncertain.

Figures use 2026 US federal tax parameters. Results are estimates only.