Calculator
Enter your starting balance, rate, years, and contribution settings. Use the table to see growth over time.
Inputs
Contribution timing affects results: beginning-of-period
contributions grow longer.
Inflation shows today’s-dollar values. Tax drag is a
simplified once-per-year estimate.
Related reading: if that monthly contribution is competing with high-APR credit card debt and a real employer match, see pay off debt or grab the 401(k) match for a worked $200/month comparison.