財務上の意思決定decision

金融意思決定エンジン

Weigh liquidity buffers, debt obligations, income volatility, and opportunity cost before committing to a major life or money decision.

入力パラメータ

ブラウザ内処理のみ

Decision Context

Nature of Financial Decision

Can this decision be reversed with minimal penalty?

Financial Metrics

Total Upfront Outlay or Capital at Risk

Net Change in Ongoing Monthly Expenses

Risk Profile

Emergency Fund Remaining Post-Decision

months

Current Debt-to-Income Ratio (DTI)

Employment & Income Stability

リアルタイムで即時再計算

計算結果と分析

計算準備完了 (¥0)

左側の入力フォームに数値を入力すると、リアルタイムで計算結果と推移グラフが生成されます。

Decision Confidence: Ready to Evaluate ($0)

Decision Confidence Score100 / 100

Liquidity Runway0 Months

Current Debt Burden0.0%

Exit ReversibilityReversible

戦略的インサイト

主な洞察と次のアクション

Stress-tests major purchases, career pivots, real estate transactions, and debt payoff choices.
Quantifies risk across liquidity runway, debt-to-income limits, and reversibility.
Generates a step-by-step risk mitigation checklist tailored to your score.

セクション1: 計算の仕組み

この計算の仕組み（わかりやすい解説）

The Financial Decision Engine applies institutional risk management frameworks to household finances. It runs your numbers through 4 core filters: (1) Liquidity Defense (does your emergency runway remain above 3-6 months?), (2) Debt Fragility (is your DTI under 36%?), (3) Cash Flow Margin (can your budget absorb the recurring drag?), and (4) Asymmetric Downside (is the decision easily reversible?).

セクション2: 数式と計算前提

アルゴリズム数式と計算根拠

計算式:

R = f(X_1, X_2, \dots, X_n) \quad \text{subject to standard actuarial bounds}

モデルの前提条件:

Evaluates solvency risk and downside vulnerability.
Assumes accurate self-reporting of debt payments and emergency reserves.

セクション3: 実践的なシミュレーション

Comparative Impact Modeling

戦略的な調整によって将来の推移がどう変わるか確認してください:

戦略 A

Baseline Minimum Strategy

Making scheduled minimum payments without additional principal allocation.

Outcome: Maximum lifetime interest accrual and delayed financial freedom.

戦略 B（最適化）

Accelerated Decision Strategy

Allocating strategic monthly surplus directly to principal reduction.

Outcome: Significant interest reduction and exponential acceleration toward goals.

戦略のポイント: Even modest monthly adjustments create substantial compound savings over multi-year horizons.

セクション4: 例外・境界条件

モデルの制限事項と境界条件

While this engine calculates standard actuarial and consumer finance metrics, real-world finance introduces nuances that no automated model can fully predict:

Assumes tax rates, inflation indices, and APR rates remain static across modeled projections.
Educational estimate; not a formal underwriting commitment from lending institutions.
Excludes localized municipal surtaxes, insurance rider surcharges, or variable-rate APR triggers.

よくあるご質問

よくある質問: 金融意思決定エンジン

What is a "Type 1" vs "Type 2" financial decision?

Borrowing from Jeff Bezos’ mental models: Type 1 decisions are irreversible (buying a house, co-signing a loan, quitting a job without an offer). They require extreme caution. Type 2 decisions are reversible (trying a new subscription, small equipment purchase). They can be executed quickly with minimal downside.

When should I delay a financial move regardless of score?

If executing the move reduces your liquid cash to under 30 days of survival expenses, pause immediately. Liquidity is king during unexpected life emergencies.