📖 Overview
This calculator demonstrates how early market losses can permanently damage retirement sustainability.
It simulates withdrawal pressure after bad opening years and projects balance durability.
🧪 Example Scenarios
Use these default and higher-pressure example inputs to explore how sensitive this calculator is before using your real numbers.
| Input | Base Case | Higher Pressure Case |
|---|---|---|
| Portfolio Starting Balance ($) | 1,000,000 | 1,150,000 |
| Withdrawal Rate (%) | 4 | 4.8 |
| Stock Allocation (%) | 70 | 84 |
| Year 1 Return (%) | -18 | -21.6 |
| Year 2 Return (%) | -9 | -10.8 |
⚙️ How It Works
Simulates retirement drawdown with adverse early returns to quantify sequence risk and compare against a smoother baseline return path.
The Formula
Each year: Balance = Balance × (1 + Return) − InflationAdjustedWithdrawal
| Starting Balance | Portfolio at retirement start |
| Withdrawal Rate | First-year draw as percent of start balance |
| Stock Allocation | Determines baseline long-run expected return |
| Year 1 Return | First stress year market return |
| Year 2 Return | Second stress year market return |
💡This calculator is scenario-based. Better input quality leads to better decision quality.
⚠️Sequence stress testing is scenario-based and not a guarantee. Real retirement outcomes depend on spending flexibility taxes and future market paths.
Quick Reference
| Opening Shock | Typical Impact |
|---|---|
| Mild drawdown | Lower ending balance but often survivable |
| Deep year-1 loss | Large permanent capital impairment |
| Two-year crash start | Highest depletion risk at fixed spending |
When To Use This
- Use this tool when you need a fast decision during active planning or execution.
- Use this before committing money, time, or tradeoffs that are hard to reverse.
- Use this to compare options using the same assumptions across scenarios.
Edge Cases To Watch
- Results can be misleading if key inputs are missing, stale, or unrealistic.
- Very small or very large values may amplify rounding effects and interpretation risk.
- If assumptions change mid-decision, recalculate before acting.
Practical Tips
💡 Stress the first years hardest since early losses are most damaging.
💡 Model spending flexibility rather than fixed withdrawals only.
💡 Evaluate cash and bond buffers for early-sequence protection.
Frequently Asked Questions
❓ Why are first retirement years so critical?
Withdrawals during early drawdowns lock in losses before recovery compounds.
❓ Does a 4% rule always hold?
No. Success depends on valuations return sequence and spending behavior.