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RunwayFI
Build my plan

Real engine · fictional profile · zero setup

Try a real runway.Nothing to connect.

Meet Alex, a fictional planner in Illinois. Move one monthly spending input and RunwayFI recomputes the plan with the same tax, FIRE, and projection engines used in the product.

This sandbox saves nothing. Reloading restores the original profile.

Accumulation to FI · today's dollars

A runway that answers back.

Estimated FI age46
nowFI · 4695
FI target
$1,493,342
Savings rate
49%
Monthly spending
$4,500
Target retirement
Age 50

What-if lever

Monthly spending

$4,500
$2,500$7,500

If Alex keeps earning and saving, this path reaches financial independence around

age ≈46

4 years before the age-50 retirement target.

One result · deeper evidence

Stress-test the answer.

This base projection is live. An account unlocks Resilience depth, historical periods, and the full set of what-if controls for your own plan.

See my full runway

RunwayFI provides educational planning estimates, not financial advice. Consult a qualified professional before making financial decisions.