Roth IRA calculator
Estimate Roth conversion factors in 10 questions.
The calculator compares illustrative current and retirement marginal-rate estimates, projects a hypothetical balance, and returns compliance-safe review topics.
Pure math core
Calculator logic is a side-effect-free TypeScript module.
10-question input
Only the survey questions are numbered; capture and report are not.
Educational output
Score bands are framed as discussion-worthiness, never advice.
Golden tests
The core includes the spec's Roth IRA regression cases.