Features

Everything a real answer needs.

Most retirement calculators ask three questions and draw a line. Calcifir models your actual life — both of you, your accounts, your taxes, your dates.

Powerful, never noisy.

Made for two

Two careers, two timelines, two sets of benefits — woven into one plan, not a calculator with a spouse field bolted on.

Every account, modeled

Pre-tax, Roth, taxable, cash — each one grows, drains, and gets taxed the way it really does.

Honest assumptions

Real returns, real taxes, real inflation. Every number shows its source, and you can change any of them.

Live what-ifs

Adjust one slider and watch the whole horizon respond, instantly. Exploring your future shouldn't feel like work.

Stress-tested

Your plan is tested against 1929, 1973, and 2008 — and thousands of simulated futures — before it ever meets the real one.

Walk the years

Scrub from today to age 90 and watch the plan unfold, year by year. Every chart moves with you.