Planning explainer

How to build useful calculator scenarios

Illustrative examples for comparing assumptions without treating projections as forecasts.

Owner: Wealth Planner editorialReviewed: 10 July 2026

Use a range, not one answer

For a long-term goal, save a conservative, base, and optimistic scenario. Change only a small number of assumptions at a time so the reason for the result difference remains visible.

Investment example: compare return and annual contribution step-up separately.
Loan example: compare rate, tenure, and prepayment strategy separately.
Retirement example: compare inflation, retirement age, and post-retirement return separately.

Name the decision

A scenario is useful when it answers a decision such as how much to contribute, what EMI remains comfortable, or whether a withdrawal lasts. Save the report locally, compare its key inputs and results, then delete it when it is no longer needed.

Keep estimates private

Saved scenarios remain in this browser. Share links can contain scenario values, so review the URL before sending it and avoid including sensitive personal details in list labels or public channels.