Data + methodology
Coast FIRE number by age
Compare illustrative Coast FIRE numbers from age 25 to 60 for a $1.5 million target at a 5% real return and retirement at 65.
Reuse the numbers
RetireFire research and data
Explore our retirement planning tables, see how we calculated the numbers, and download the data. You may reuse the tables if you name RetireFire and link to the source page.
Data + methodology
What one more year can change on the path to FIRE
See how one additional year of contributions and 5% real growth changes portfolios from $100,000 to $1 million, with the assumptions kept visible.
Data + methodology
Retire at 50 vs 55 vs 60: which bridges change?
Compare planning horizons, Medicare gaps, Social Security bridges, and account-access considerations when retirement begins at 50, 55, or 60.
Data + methodology
Why FIRE calculators disagree
Seven assumptions that make FIRE calculators produce different answers, plus a checklist for comparing tools without mistaking precision for truth.
Methodology before headlines
Educational illustrations, not forecasts. Assumptions stay visible so readers can reproduce, challenge, and replace them.