# FIRE Planner — Context

A personal FIRE engine: a Monte-Carlo retirement-success simulator plus a live
"can I retire yet?" countdown that tracks net worth against per-life-stage targets.

## Language

**Case**:
A named life-stage the countdown tracks. Solo (Viktor only), Household (Viktor +
Anca), Family (Household + 2 kids). Each Case is a real-GBP annual spend.
_Avoid_: scenario (reserved for the Cartesian simulator row — jurisdiction ×
strategy × leave-year × glide).

**FIRE number / Target NW**:
The smallest liquid net worth (real GBP, country-specific) at which a Case's
Guyton-Klinger plan reaches the bar. Computed by Monte-Carlo threshold, not a
fixed SWR multiple.
_Avoid_: goal, magic number, the number.

**The bar**:
The Monte-Carlo success probability that counts as "can retire" — 99%.

**Countdown**:
Target NW − current liquid NW, in real GBP (today's money). Rendered with
progress %, projected date, and runway.

**Bridge pot / liquid NW**:
Assets spendable before the workplace pension unlocks (~57). Funds the early
sequence-risk years. The pension is excluded from it and modelled as a tranche
that joins later.
_Avoid_: net worth (which includes the locked pension).

**COL-driven spend**:
Spend that re-scales by a country's cost of living — rent (by 1-bed rent ratio)
and non-rent essentials (by the no-rent basket ratio), plus kids' costs.
_Contrast_: **Fixed spend** — Holidays, globally priced, unchanged by country.

**Safety multiplier**:
The ×1.5 padding Viktor applies on top of measured real spend.

**Re-entry trigger**:
The written rule — take paid work if the portfolio is below £1.0M for two
consecutive quarters. A guardrail, surfaced on the dashboard, not a failure.