Coast FIRE Calculator

Find when retirement contributions can stop

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When to use it

You want to estimate when new retirement contributions could stop while the current portfolio continues growing.

Inputs

current_age
retirement_age
current_portfolio
monthly_investment
annual_spending
return_rate
inflation_rate
withdrawal_rate
compounds_per_year

Outputs and preview

Coast number today
Estimated coast age
Real retirement target and projected portfolio

The result rail summarizes the primary conclusion. Open Preview for the complete theme-aware presentation and Playground controls. Simulation changes runtime overrides only; authored source stays untouched.

Worked example

Live calculation

Coast FIRE Calculator starter

Edit the starter here, or open it as a new local Continuum document for the full preview.

Editable source

Live results

1—
2—
335
465
5$120,000.00
6$1,200.00
7$40,000.00
80.07
90.02
100.04
1112

A rich template preview is ready in the full workspace.

Interpret with care

The result depends heavily on return, inflation, and withdrawal assumptions.
This is a model, not financial advice or a guaranteed retirement date.