Macro Stress Test Engine

Fed Rate Hike Impact Lab

Simulate how aggressive Federal Reserve interest rate shocks contract valuation multiples, depress bond principal, stress debt obligations, and boost money market yield.

Asset Stress & Return Impacts

Calculated via Macaulay modified duration, discounted earnings equity compression, and debt servicing delta.

Net Portfolio Impact
-$3,845
-3.85% total asset value
Bond Principal Loss
-$1,024
-3.41% via duration
Equity Multiple Shock
-$2,970
-5.40% valuation contraction
Added Cash Income
+$113/yr
From 4.75% to 5.50%

Asset Class Value Trajectory Under Rate Shock

Baseline
Shocked Outcome
Segment Starting Value Rate Shock Mechanism Post-Shock Value Net Change
Floating Debt Burden Warning +$150 / yr

On $20,000 of floating debt (HELOC, variable mortgages, credit lines), this rate hike increases annual debt service by $150.00.

Simulation updated: Ready to export audited stress report.

The Mechanics Behind Rate Shock Transmissions

Why Wall Street fears "something more substantial" when Federal Reserve rhetoric turns hawkish:

1. Fixed Income Duration Drag

Bond prices move inversely to yields. When interest rates rise by Δy, bond price declines by approximately -Duration × Δy + ½ × Convexity × (Δy)². A 7-year duration bond loses ~5.25% in market value for every 75 bps increase in benchmark yield.

2. Equity Multiple De-Rating

Higher risk-free rates raise the discount hurdle rate (WACC) applied to future cash flows. High P/E growth stocks suffer highest sensitivity (long equity duration), compressing market multiples from 24x down to 18x–20x even if underlying earnings remain flat.

3. Variable Debt Squeeze & Money Market Tailwind

Credit card APRs, SOFR-pegged business credit lines, and adjustable mortgages adjust upward immediately, dampening disposable income. Concurrently, cash and Treasury bills benefit from higher reinvestment yield, forming a flight-to-safety buffer.

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