One of the biggest challenges retirees face isn't just accumulating enough money — it's knowing how much they can sustainably spend each year without running out. The traditional 4% rule, while a useful starting point, doesn't account for the reality that markets (and life) don't follow straight lines.
The Guardrails Approach
Guardrails strategies provide a framework for adjusting spending based on portfolio performance. Rather than a fixed withdrawal rate, you establish upper and lower boundaries that trigger adjustments:
- Upper guardrail: When your portfolio performs well and your withdrawal rate drops below a threshold, you can give yourself a raise.
- Lower guardrail: When markets decline and your withdrawal rate rises above a threshold, you make modest spending reductions.
Why This Works
The beauty of a guardrails approach is that adjustments are typically small and infrequent. Research by financial planners Jonathan Guyton and William Klinger (Journal of Financial Planning, 2006) found that a willingness to make modest 10% spending adjustments when guardrails are hit can support a higher sustainable withdrawal rate.
Combining Guardrails with an Income Floor
One approach combines guardrails with a guaranteed income floor. Your essential expenses are covered by guaranteed income, and the guardrails strategy applies only to discretionary spending funded by your portfolio. This means even when a guardrail triggers a spending reduction, your essential expenses are not the ones being cut. Guarantees are backed by the claims-paying ability of the issuing insurance company.
Interested in building a flexible retirement spending strategy? Let's discuss how guardrails can give you more confidence in retirement.