Coast Retirement

Interactive Models And Scenarios

Full-width planning and analysis tools—upload trades, run retirement projections, optimize allocation, or open education and behavior simulators. Short guides live on Research.

Jump to Core models, Interactive scenarios, or Planning guides.

Core models

Primary Coast Retirement tools for behavioral trade review, retirement projections, portfolio mix, and Roth vs 401(k) savings.

Behavior · Analysis
Psi Fi™ Portfolio
Upload brokerage trades for behavioral persona classification, mistake flags, and what-if comparisons under value, momentum, macro, tactical, or FOMO discipline.
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Coast · Model
Retirement Modeling
Full retirement model — income, expenses, properties, and net worth projected from today through retirement and beyond.
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Investing · Allocation
Portfolio Optimizer
Historical return bands, risk/return tradeoffs, and a simple optimizer for mix ideas—not personalized advice.
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Accounts · Tax
Roth IRA vs 401(k)
Compare a traditional 401(k) with company match to the after-tax Roth IRA twin, then see leftover balances and tax now vs later.
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Interactive scenarios

Standalone simulators for education debt, risk tolerance, and lifestyle tradeoffs—each with its own inputs and charts.

Education · Budget Game
College Debt Model
Tabs for career, school, where you want to live, car, lifestyle spending, then a full editable budget and loan payoff.
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Investing · Behavior
Risk Tolerance & Market Simulator
Answer a short questionnaire, see a suggested allocation band, then stress-test a simple portfolio path in the chart engine.
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Planning guides

Short research articles with calculators and benchmarks — use these before or alongside the full retirement model.

Research · Age 40
Am I behind on retirement at 40?
Expense-based 4% rule check, monthly savings gap, and portfolio path chart — with a free calculator.
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Research hub
All research guides
FIRE types, Coast FIRE math, ACA cliff, emergency fund, Social Security timing, and more calculators.
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