## What this models
Overriding the target retirement age and/or the planning-horizon (life-expectancy) age for the primary
and/or spouse — for example working a few years longer, or planning to a later longevity age.
## Maps to module(s)
- `retirement_age_override_v1` — set any of `target_retirement_age`, `spouse_target_retirement_age`,
`primary_longevity_age`, `spouse_longevity_age` (include only the ones the user is changing).
## Information needed
- Which age(s) to change and the new value(s).
## Defaults & assumptions
- Only include the fields the user actually changes; leave the rest off to keep the baseline.
## Prerequisites
- A completed baseline plan (spouse fields only apply when there is a spouse/partner).
## How to summarize to the user
"Retire at {AGE}{ and plan to age LONGEVITY} instead of the baseline."
Educational content only—not personalized investment, tax, or legal advice.