Cost of Waiting to Invest Calculator
“I’ll start next year” is expensive. See what a few years’ delay costs your ending balance — the price of lost compounding.
Example: with Monthly investment $500 · Years you wait before starting 5 yrs · Expected return 7% · Years from today until you stop 35 yrs → Cost of waiting: $290,542.
- Start now → ending balance$900,527
- Wait → ending balance$609,985
- You’d also contribute this much less$30,000
Computed by the calculator below using its default values. Change any input to see your own numbers.
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Learn moreWhy early dollars win
Compounding rewards time more than amount. The dollars you invest earliest have the most years to grow, so a delay near the start lops off the most valuable growth at the end. Waiting even a few years can cost six figures — far more than the contributions you skipped.
How it’s calculated & sources
We compute the future value of your monthly investment compounded at the expected return for the full horizon (start now) versus a shorter horizon (after the delay). The difference is the cost of waiting.
Benchmark: time in the market beats timing the market — the gap grows exponentially with the delay (standard compounding math).
Results update as you type and are general estimates, not personalized financial, tax, medical or legal advice. Verify with a professional.
Frequently asked questions
What if I invest more later to catch up?
You usually can’t fully catch up — the lost years compounded the most. Starting smaller now typically beats starting bigger later.
Is 7% realistic?
It’s a common long-run stock estimate before inflation. Use a lower real rate (~5%) if you want results in today’s dollars.