RETIREMENTdecision model
Retirement planning, made inspectable.v3.1.1 (2026 IRS/SSA Rules)Browser-only planning model

Build a retirement scenario

One-person model · your retirement inputs

2 items need attentionYour entries · saved in this browserPrivate by default

Step 1 of 6

Build the timeline first

Dates, not just years. Months change what a benefit is worth, so this is where the report earns the right to compare claiming ages.

The household timeline

These two years establish the starting point of the model.

A date, not a year. Social Security is worked out to the month, so a January and a December birthday in the same year are different amounts.

Retirement spending begins from here. If you have already stopped, use the month you did.

Your headline result is a snapshot of one date. Most people pick the day they retire; some pick a birthday a few years out.

Choose whether to include a spouse's timing and benefits.

Used for state tax on the projected income, and to place you in the right health-coverage context before Medicare. It does not model local taxes or any state-specific benefit rules.

Used only when Other / custom rate is selected.

Calculator inputs are processed locally in your browser.