Latest / The Financial Freedom Podcast with Fexingo: Quitting Your Job, Living Off Investments, Independence / The 4 Percent Rule After a Lost Decade in Stocks
Transcript
- Lucas: You retire early with a million dollars. You plan to withdraw four percent a year — forty thousand dollars, adjusted for inflation. And then the stock market does nothing for ten years. Luna: That's the nightmare scenario. The 'lost decade' that sequence of returns risk is all about. Lucas: Right. And we talk about sequence risk a lot on this show, but I want to drill into something specific today: what actually happens to the four percent rule when you hit a lost decade right out of the gate. Not a crash — a slow, grinding stagnation. Luna: Before we dive in — and I know we say this every so often — but the reason we can keep talking about these retirement scenarios without interruption is that we don't run ads on this show. If you find that valuable and want to support it, the link is buy me a coffee dot com slash fexingo. No pressure, just a way to keep it ad-free. Lucas: Appreciate that, Luna. Okay, back to the lost decade. Let's use a concrete example. Someone retires in early 2020 with a million-dollar portfolio, sixty percent stocks, forty percent bonds. They take forty thousand dollars that first year, adjusted up with inflation each year. Luna: And we're now in mid-2026, so they're about six and a half years in. Lucas: Exactly. If stocks had a lost decade from 2020 to 2030 — say the S&P 500 returns about one percent nominal annually, which is roughly what happened from 2000 to 2009 — then by year ten, their portfolio is in serious trouble. Luna: How much trouble? Run the numbers for us. Lucas: I'll use the conservative end. Assume bonds return three percent nominal. Inflation at two and a half percent. With a constant sixty-forty allocation and annual rebalancing, after ten years of withdrawals, the portfolio drops to about six hundred and twenty thousand dollars in nominal terms. In real terms, adjusting for inflation, it's closer to four hundred and ninety thousand. Luna: So they've lost more than half their purchasing power. That's brutal. Lucas: And the withdrawal amount in year ten is now about fifty thousand dollars — because of inflation adjustments — but the portfolio is barely earning anything. The withdrawal rate on the remaining portfolio is over eight percent. That's unsustainable. Luna: So the classic four percent rule fails in this scenario. But isn't the four percent rule based on the worst historical period — the 1960s and 1970s? Lucas: It is. The Trinity Study, which popularized the four percent rule, looked at thirty-year retirement periods starting in 1926. The worst case was someone retiring in 1966. They had a mixed bag — inflation spiked, stocks were flat for a decade, bonds got crushed. That retiree barely survived thirty years with a four percent withdrawal rate. Luna: But our hypothetical retiree is in a similar boat, maybe worse because bond yields were higher in the 1970s than they are now. Lucas: That's the key difference. When you retired in 1966, ten-year Treasuries yielded around four and a half percent. In 2020, ten-year Treasuries were below one percent. So the bond portion of the portfolio provided much less income and less cushion. A lost decade today could be even more punishing. Luna: So what can an early retiree do if they're facing this? Just hope it doesn't happen? Lucas: Hope is not a strategy. There are a few levers. The most obvious one is flexible spending. If the retiree can cut back spending during the lean years, the portfolio survives much longer. The classic example is Guyton and Klinger's 'guardrails' approach — if the portfolio drops more than twenty percent from the starting value, you cut withdrawals by ten percent. If it surges, you give yourself a raise. Luna: And that's been shown to improve success rates significantly. But it requires discipline. Lucas: Massive discipline. Because the temptation is to keep spending — you planned for this lifestyle. But if you can trim ten percent, you're not cutting to the bone. It's the difference between a vacation to Europe and a road trip. Luna: Another lever I've seen work well is a small side hustle. Not out of desperation, but as a buffer. Even ten or fifteen thousand dollars a year from consulting, freelancing, or a part-time job can turn a failing withdrawal plan into a successful one. Lucas: Absolutely. There's research from Wade Pfau and others showing that even modest part-time income in early retirement dramatically reduces the risk of portfolio failure. Because it reduces the amount you need to withdraw, and it gives the portfolio more time to recover. Luna: So the takeaway isn't that the four percent rule is dead. It's that you need to build flexibility into your plan. A rigid rule without adjustments is fragile. Lucas: Exactly. And I think that's the honest conversation early retirees need to have. The four percent rule is a starting point, not a guarantee. If you're retiring early with a thirty-plus year horizon, you need to stress-test your plan against a lost decade, know how you'll respond, and have a few levers to pull. Luna: And understanding the math behind those levers — that's what gives you confidence when the market isn't cooperating. Lucas: Exactly. Because the worst thing you can do is panic and abandon your plan. But if you've already planned for the lean years, you can ride them out.