Work out 401k growth instantly with clear inputs, formula shown and shareable results.
A workplace retirement account grows from two sources: the existing balance compounding and each year's new contribution compounding for the years remaining. Over a long career investment growth usually dwarfs the contributions.
Account projection
FV = B(1+r)^n + C × [((1+r)^n - 1)/r] × (1+r)
Figures are estimates for planning only. Market returns are not guaranteed, and rates, limits and tax rules change. This is not financial or tax advice — speak to a qualified adviser before acting.
Yes if possible — contribution limits are usually indexed, and a rising contribution keeps the plan on track in real terms.
Use a conservative long-run figure net of fund fees, and re-test the plan at a lower rate.