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Invest Now vs Later Tool

Invest Now vs Later Analysis Tool

Invest Now vs Later

Compare two contribution timelines side-by-side — quantify exactly what early action is worth at retirement.

Annual Compounding Live Updates Two-Scenario Model 📚 Educational Use Only
Outcome
— Add data

Shared Settings

Applied to both scenarios
%

Scenario A

Early start
Contribution window A
$
$
%

Scenario B

Later start
Contribution window B
$
$
%

Final Values at Target Age

Age 65
Scenario A i
—
Early start
Scenario B i
—
Later start
Difference i
—
—
Total contributed A i —
Total contributed B i —
Growth above contributions A i —
Growth above contributions B i —
Years of compounding A i —
Years of compounding B i —

Portfolio Growth Over Time

Hover to inspect
Value over time
Scenario A Scenario B
Assumptions & Methodology

This tool compares two contribution timelines over a shared horizon from the earliest start age to the target age.

Core Assumptions

  • Annual return is constant — real markets fluctuate year to year.
  • Returns compound once per year at the rate you select.
  • Monthly contributions are summed into a single annual deposit at year-end.
  • Contribution increases apply once per year after each deposit.
  • No taxes, fees, employer matches, or inflation adjustments are modeled.

How the Projection Works

  1. The model projects from the earlier start age to target age.
  2. At a scenario's start year, the lump sum is added before growth.
  3. The balance grows by the annual return rate each year.
  4. Yearly contributions are deposited at year-end once a scenario has started.
  5. The annual raise is applied after each deposit if set above 0%.

For educational planning use only. Not a forecast, guarantee, or personalized investment recommendation. Consult a qualified financial advisor before making investment decisions.

📚 Educational Use Only — This tool is designed for learning and general estimation purposes only. Results are illustrative and do not constitute financial, tax, investment, or legal advice. Individual circumstances vary significantly. Consult a qualified financial advisor, tax professional, or attorney before making any financial or investment decision. Past performance does not guarantee future results. All calculations assume constant inputs with no taxes, inflation, fees, or employer matching applied.