smartfin_calculate_fire_number

shallow

fyi.smartfin/smartfin · Verify this server

Works the way SmartFin's FIRE calculator does. The FIRE number today is yearly expenses divided by a safe withdrawal rate. Each year savings grow at an assumed return with the yearly savings added, while expenses (and so the FIRE number) rise with inflation; FIRE is the first year savings reach that year's FIRE number, searched up to 60 years. Also gives the savings rate and, with a traditional retirement age, the Coast FIRE number. Use for early retirement / FIRE questions: "how much do I need to retire", "when can I retire", "what's my coast FIRE number". Do not use to test how long an existing balance lasts (use smartfin_calculate_retirement_withdrawal). Returns and inflation are assumptions; excludes taxes.

100.0/100

1 trials · measured 1 day ago

smartfin_calculate_fire_number scores 100.0/100 on Vouch's measured behaviour index, from 1 real invocation trials against fyi.smartfin/smartfin, measured 6 Oct 2026 under methodology v0.2.0. Every measured component scored 100.

Component breakdown

ComponentWeightValue
Reliability35%not applicable
Schema integrity25%100.0
Failure behaviour15%not applicable
Latency15%not applicable
Concurrency10%not applicable

Tool details

Transport
remote
Credential class
self-provisionable
Input schema
not declared
Output schema
not declared
Side-effect classification
unclassified

Score history

DayScoreTierMethodology
2026-10-06100.0shallowv0.2.0

Probe evidence

ProbeOutcomes
schema_integritypass: 1

Raw request/response logs are not archived yet — the outcome counts above are drawn directly from every recorded trial.

Embed this score

Available for every tool, scored or not — not a verification perk. Always links back to this page.

Vouch score: smartfin_calculate_fire_number
[![Vouch score](https://vouch.tools/api/tools/fa6a7907-64d0-4cf8-8dc1-e61341f00a11/badge.svg)](https://vouch.tools/tools/fa6a7907-64d0-4cf8-8dc1-e61341f00a11)
smartfin_calculate_fire_number — Vouch