🔑 Buy Pro License ($89)
⚙️ Engineered for DIY Retirees & Bogleheads

Stop Guessing Your Safe Withdrawal Rate. Engineer Your Retirement Decumulation.

Most retirement calculators stop at a single gross "Can I retire?" number. Model tax-smart 401(k)/Roth/Brokerage drawdowns, 2-year Medicare IRMAA lookbacks, CCRC housing transitions, and actual-vs-plan withdrawal throttling—100% locally in your browser with zero cloud tracking.

🔑 Buy Pro License ($89)
Already purchased Pro?
26-Period Engine
Biweekly compounding & bracket filling
Actual-vs-Plan Sync
1-click companion spreadsheet bridge
AI-Ready JSON
40+ column export for ChatGPT / Claude
Interactive Live Preview

Age 76 Snapshot: Standard Calc vs. Execution Suite

Slide Real Portfolio Return Rate (%) 6.5% Real Return
Conservative (2.0%) Baseline (5.0%) High Growth (11.0%)
Projected Portfolio
$1,920,000
incl. HSA: $2,140,000
Net Spendable
$158,400
After Tax & IRMAA
Fed Tax + IRMAA
$24,800
IRMAA Tier 2 Active
Forced RMD
$64,200
Uniform Table (23.7)
Tax-Smart Withdrawal Sequencing & IRMAA Radar ⚠ 2-Yr Lookback MAGI: $284k (IRMAA Tier 2)
401k + SS
Brok/Roth
Fed Tax
IRMAA
Why standard calculators fail here: At a 6.5% return, your growing 401(k) triggers aforced RMD at age 76 that pushes your 2-year lookback MAGI over the $218k joint IRMAA cliff—costing $5,770/yr in hidden Medicare surcharges.
Want to test your own balances & ages?
🔒

100% Client-Side Execution

Your net worth, tax brackets, and account balances never touch a remote server or cloud database.

🛡️

Zero Bank Linking Required

No Plaid credentials, no brokerage logins, and no harvesting of your family's financial data for advisor lead-gen.

💾

Portable `.json` & Offline HTML

Auto-saves to browser `localStorage` plus unlimited `.json` profile exports and a self-contained offline HTML app.

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$89 One-Time Ownership

Stop paying $120–$250/year for SaaS subscriptions. Own the simulator and companion execution spreadsheet forever.

Under the Hood

Six Decumulation Engines Built for Real-World Complexity

Every parameter—from filing status and standard deductions to biweekly contribution splits and CCRC equity refunds—is 100% editable.

01 Pro Engine

Tax-Smart Bracket Filling & Sequencing

Models 26 biweekly drawdowns per year using an institutional withdrawal hierarchy: satisfies mandatory RMDs first, fills your remaining 12% ordinary income bracket room from Pre-Tax 401(k), then taps Taxable Brokerage (tracking dynamic cost basis) and Roth before spilling back into higher tax brackets.

Supports MFJ, Single, HoH & MFS 0% / 15% / 20% Cap Gains
02 Pro Engine

Medicare IRMAA 2-Year Lookback Radar

Tracks your Modified Adjusted Gross Income (MAGI) with an authentic 2-year Medicare lookback. Automatically calculates Part B & Part D surcharges across all 5 IRMAA tiers and shades warning bands directly onto your withdrawal chart so you can spot MAGI cliffs years in advance.

1 or 2 Medicare Beneficiaries Visual Chart Shading
03 Pro Engine

CCRC Buy-In & Home Equity Downsizing

Projects compounding home value appreciation, models a downsizing cash-out infusion into your brokerage basis at any target age, and deducts Continuing Care Retirement Community (CCRC) entrance fees—complete with optional HSA funding and refundable equity contract credits (50%–100%).

Custom Appreciation Rate Refundable Equity Line
04 Pro Engine

Dedicated HSA Lifecycle & Medical Track

Separates your Health Savings Account from ordinary retirement balances. Models pre-retirement family or individual contributions, tax-free investment growth, automated late-life medical spending drawdowns (e.g., age 80+), and tax-free HSA funding for one-time LTC or housing events.

Custom Start / Stop Ages Tax-Free LTC & Medical
05 Core + Pro

Multi-Stage Accumulation & Decumulation

Retirement spending isn't flat. Chain together unlimited pre-retirement contribution stages (with per-period free-spend cash tracking) and sequential Go-Go, Slow-Go, and No-Go withdrawal phases—each with its own target percentage rate, minimum floor, and maximum spending cap.

Drag-to-Select Age Summaries Real vs. Nominal $ Toggle
06 Pro Engine

AI Advisor JSON & Full CSV Data Export

Export your entire 40+ column year-by-year projection—including account snapshots, RMD excess, ordinary vs. capital gains taxes, IRMAA tiers, and every underlying assumption—as a structured JSON or CSV file ready to drop into ChatGPT, Claude, or Gemini for deep analysis.

Schema v3.0 Structured Output 1-Click Scenario Backup
The Missing Link in DIY Retirement

How the Annual "Actual-vs-Plan" Execution Bridge Works

A static retirement plan becomes obsolete on January 2nd. The Execution Suite pairs the interactive HTML simulator with a companion spreadsheet bridge so you know exactly how much to withdraw each year.

Interactive Clipboard Bridge Demo

Click Any Age Point on the Portfolio Chart to Copy Your Annual Execution Snapshot

In the Pro Execution Suite, clicking any year on the top Portfolio Balance chart automatically formats that year's exact age, target withdrawal rate, inflated 401(k), Roth, and Brokerage balances, spreadsheet formula (=SUM(C4:C6)), floor/cap guardrails, and inflation rate directly to your clipboard.

Click a Sample Age Below to Inspect the Live Clipboard Payload:
Companion Execution Sheet • Cells C2:C10 Ready to Paste (Ctrl+V)
Cell C2 Execution Age 70
Cell C3 Planned Withdrawal % 10.0%
Cell C4 401(k) Balance (Nominal $) 942180.45
Cell C5 Roth Balance (Nominal $) 298410.12
Cell C6 Brokerage Balance (Nominal $) 41290.00
Cell C7 Total Portfolio Formula =SUM(C4:C6)
Cell C8 Min Spending Floor ($) 112970.55
Cell C9 Max Spending Cap ($) 145247.85
Cell C10 Assumed Inflation Rate 2.5%
Transparent Feature Matrix

Free Web Edition vs. Pro Execution Suite

Use the Free Edition as long as you like for high-level trajectory planning, or unlock the full Pro Execution Suite for tax, healthcare, housing, and annual spreadsheet execution.

Capability / Module Free Edition ($0) Pro Suite ($89 One-Time)
Custom Start/End Ages, Filing Status & Today's vs. Future Nominal $ Toggle ✓ Included ✓ Included
Interactive Chart Hover Breakdowns & Drag-to-Select Age Range Summary Popup ✓ Included ✓ Included (w/ Tax & IRMAA)
Pre-Retirement Accumulation Stages & Sequential Withdrawal Phases 1 Stage & 1 Phase Unlimited Dynamic Stages
Tax-Smart 12% Bracket Filling, Brokerage Cost Basis & Uniform Table RMDs 🔒 Gross Only ✓ Full Multi-Account Tax Engine
Medicare IRMAA 2-Year Lookback Surcharges & Visual Chart Warning Bands 🔒 Pro Only ✓ All 5 Tiers + Chart Shading
Home Equity Downsizing Cash-Out & CCRC Buy-In + Refundable Equity Credits 🔒 Pro Only ✓ Included
Dedicated HSA Projection Track, Age 80+ Medical Spend & One-Time Liquidity Events 🔒 Pro Only ✓ Included
Companion Execution Spreadsheet Sync (`Copy Expected Balances` + Chart Click-to-Copy) 🔒 Pro Only ✓ Included
AI Advisor 40+ Column JSON/CSV Export, `.json` Scenario Save/Load & Offline HTML File 🔒 Pro Only ✓ Included
No Recurring SaaS Subscriptions

Choose Your Planning Edition

Start immediately in your browser for free, or unlock the complete Decumulation Execution Suite for a single one-time payment.

Free Web Edition No Sign-Up Required
$0 / forever

Ideal for quick retirement trajectory checks and testing gross portfolio longevity across return rates.

  • ✓ Customizable Start/End Ages, Initial Portfolio & Real Return Slider
  • ✓ Primary & Spouse Social Security Income Timeline
  • ✓ 1 Pre-Retirement Contribution Stage & 1 Withdrawal Phase
  • ✓ Today's Real Dollars vs. Future Nominal Dollars Toggle
  • ✓ Interactive Charts with Drag-to-Select Age Range Totals
Most Popular • Complete Toolkit
Pro Execution Suite Instant License + Offline Zip
$89 one-time license (own forever)

Everything in Free, plus the full tax-sequencing engine, Medicare IRMAA lookback radar, CCRC housing model, and companion execution spreadsheet.

  • ★ Tax-Smart Bracket Sequencing: Auto-fills 12% bracket, tracks brokerage cost basis, and enforces Uniform Table RMDs
  • ★ Medicare IRMAA 2-Year Lookback Radar: Tier 1–5 surcharge deductions & visual orange chart cliff bands
  • ★ Housing & CCRC Transition Suite: Home equity downsizing cash-out, CCRC buy-in & refundable equity credit
  • ★ Dedicated HSA Track & Unlimited Stages: Unlimited contribution/withdrawal phases + one-time liquidity events
  • ★ Companion Execution Spreadsheet + AI Exports: 1-click baseline & chart sync + 40-column JSON/CSV export
🔑 Buy Pro License ($89)
Questions & Answers

Frequently Asked Questions

Where is my financial data stored? Is anything sent to the cloud? +

100% of calculations happen locally inside your browser's JavaScript engine. Your inputs are saved automatically to your browser's local storage (`localStorage`) so they persist between sessions on your machine, and Pro users can export portable `.json` scenario files or run the self-contained `.html` file completely offline on an air-gapped computer.

What happens when tax brackets, standard deductions, or IRMAA thresholds change in future years? +

Every tax and healthcare parameter in the simulator—including the Standard Deduction, Senior Bonus Deduction, 12% Ordinary Income Bracket Ceiling, 0%/15% Capital Gains thresholds, RMD Start Age, and IRMAA Tier 1 threshold—is exposed right in the Core Assumptions, HSA, RMD & Tax/IRMAA panel. You never have to wait for a software vendor to push an update.

Does this work for Single filers, Head of Household, or Married Filing Separately? +

Yes. Selecting your filing status in the Personal & Timeline Profile panel automatically reconfigures the standard deduction, senior deduction count, ordinary income tax brackets, capital gains thresholds, Medicare IRMAA thresholds, and spouse Social Security toggle—and you can still fine-tune any individual number afterward.

How does the Pro license key and offline download delivery work? +

Checkout is handled securely via our Merchant of Record. Immediately upon purchase, you receive a license key that unlocks all Pro modules in the web simulator plus a downloadable `.zip` bundle containing the pre-unlocked offline HTML application and the Companion Execution Spreadsheet.