Future Value Calculator
Quick answer
Provide starting amount, return assumption, time horizon, and any recurring contributions. Inspect how ending value shifts when you tweak each input.
For a related estimate, see 401k Calculator.
Explore further: Compound Interest Calculator · Gdp Calculator
Drivers of ending value
Time and return dominate for lump sums; contribution rate dominates early in a career when balances are small.
Explore further: Investment Calculator · Ira Calculator
Future value answers “what is this worth later?” for investments and savings plans. It is the mirror image of present value — same discounting ideas, forward instead of back.
How to use this calculator
- Anchor the horizon: Match the timeline to the goal — house down payment vs retirement use different frames.
- Model contributions honestly: Skip contributions you will not sustain — optimistic savings rates mislead.
- Stress-test returns: Run below-average returns to see if the plan still clears minimum needs.
Real-world examples
- Example: contribution lift: Raising monthly savings a modest amount can rival chasing an extra percent of return — both levers matter.
- Sensitivity check: Nudge the rate by about +0.5% and the principal by about −5%. If the payment, break-even, or target amount moves enough to change your decision, you are still on a steep part of the curve where small inputs matter.
Explore further: Savings Rate Calculator
Interpretation
If future value falls short, extend time, raise contributions, or reduce the goal — returns are not a dial you fully control.
FAQ
Are growth projections guaranteed?
No. Returns are uncertain; use ranges and stress tests rather than a single optimistic path.
Should I compare pre-tax and Roth using the same return?
You can, but spendable dollars differ at withdrawal — tax location matters for net outcomes.
How accurate is this calculator?
It applies standard math to the inputs you enter. Real lenders, payroll rules, and rounding can differ—use results for planning and comparison, not as binding quotes.