A calculator that shows its work
Move the sliders. See if your money outlasts you.
You already have savings and investments. Slide when you claim Social Security and what you budget monthly, and watch the number move in real time.
Start your plan — freeAbout 2 minutes. Nothing you enter leaves your browser.
This is the real engine. Move the sliders — it's running the same math your actual results page will.
Move the sliders — will it last?
On track to 100
$693K left at age 100
Current state
Today
Projection
Age 100
Two of the levers your full plan tunes — withdrawal order, taxes, and Medicare are handled automatically. Example household: $2,800/mo benefit at 67, $800K saved, retiring in 2029.
How it works
Answer 5 short steps
Birth year, Social Security, savings, coverage. About 2 minutes, not 2 hours.
See your real numbers
Your best claiming age, how long your money lasts, what you'll pay in tax and Medicare surcharges along the way.
Know what to fine-tune, and with whom.
Every number traces to a real formula, on the Methodology page. Where it shows something needs attention, that's your sign to bring in a professional.
Built for two moments, not one big dashboard
Still working
Planning a few years out and want to see what claiming at 65 looks like against 67, or 70 — without opening a spreadsheet.
At the decision
At or near retirement, need an actual answer: claim now, or wait? Does the money last either way?
Nothing you enter ever leaves your browser
RetiSquare runs entirely on your device. There's no account to create and no server holding your numbers. Close the tab and it's gone. Open it again and start fresh.
No Cloud Storage
Your data stays in your browser's local memory.
No Accounts
We don't want your email, name, or identity.
Zero Tracking
No third-party scripts watching your math.
Built for the number you can check, not the one you're asked to trust
Most tools make you choose: fill out 200 fields for something precise, or answer five questions for something vague. RetiSquare asks for the handful of things that actually move your number, and tucks the rest behind an optional "refine this" — so you go deeper only if you want to, and can see exactly why the number moved when you do.
Pricing
Free
$0
Free, full stop, for a single-scenario plan. See your number without creating an account.
- Single individual scenario
- Standard deterministic projection
- Local browser storage
Premium
$99/year
For complex households and advanced modeling.
- Couples & Joint planning
- Unlimited Monte Carlo simulations
- Long Term Care consideration
Ready to see your number?
Take 2 minutes to answer 5 short questions. See what actually decides if your money outlives you.
Start your plan — freeFree, full stop, for a single-scenario plan. Premium adds couples, unlimited Monte Carlo, and more — see what's included.