Can we raise our Safe Withdrawal Rate when inflation is low? – SWR Series Part 41

October 26, 2020

A few weeks ago I wrote the post “Do we really have to lower our Safe Withdrawal Rate to 0.5% now?” about the pretty ridiculous claim that the Safe Withdrawal Rate should go all the way down to just 0.5%, in light of today’s ultra-low interest rates. The claim was transparently false and it was great fun to debunk it. But recently I came across another proclamation of the type “We have to rethink the Safe Withdrawal Rate” – this time proposing to raise it all the way up to 5% and even 5.5%! Well, count me a skeptic on this one, too. Though I’d have to tread a bit more cautiously here because the 5.5% SWR claim doesn’t come from some random internet troll but from the “Father of the 4% Rule” himself, Bill Bengen. He’s been doing the rounds recently advocating for a 5% and even 5.5% Safe Withdrawal Rate:

  • In September in a piece he wrote for FA-mag with a recommendation to raise the SWR to 5%.
  • On October 1, the same article, reprinted almost verbatim under a different title in the same magazine: “Choosing The Highest Safe Withdrawal Rate At Retirement”
  • On October 13 on Michael Kitces’ podcast, Bengen made another explicit SWR recommendation: “[I]n a very low inflation environment like we have now, if we had modest stocks, I wouldn’t be recommending 4.5%, I’d probably be recommending 5.25%, 5.5%” It’s not clear what made him raise the SWR by another 0.25-0.50%, though.

And the whole discussion was quickly picked up in the personal finance  and FIRE community:

The main rationale for increasing the SWR: inflation has been really tame recently and will stay subdued over the coming years and even decades. That’s his forecast, not mine! Hence, Bengen makes the case that we’d have to make smaller “cost-of-living adjustments” (COLA) to our withdrawals. Smaller future aggregate withdrawals afford you larger initial withdrawals, according to Bengen. But as you might have guessed, the calculations that justify the significantly higher withdrawal rate don’t appear so convincing once look at the details…

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Inflation Risk for Early Retirees – Part 4: Hedging

Here’s the next installment of the inflation series, joint with my blogging buddy Actuary on FIRE. Check out the other parts here:

Today’s post is about one issue I raised in the post last month: What asset classes – if any – are useful in hedging against inflation? Simple question, not an easy answer. It all depends on the horizon!

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Inflation Risk for Early Retirees – Part 2

February is “Macroeconomics Month” on the ERN blog! And the topic of inflation fits right in. My blogging buddy Actuary on FIRE suggested doing a series on the “Inflation Risk for Early Retirees” and I like that idea because this topic hasn’t gotten all that much attention in the FIRE community. Even though inflation is a top concern for 78% of retirees, according to this recent article.

In addition, the topic is not just extensive enough to span multiple blog posts, but it also greatly benefits from the viewpoints of two experts in their respective fields: An actuary and an Econ Ph.D. each with their own expertise in number crunching. AoF started the series last week with the introductory post, Part 1, and this week it’s my turn. Just like AoF, I like to start setting the stage and give a little bit of an overview – think of this as another introduction to the inflation topic, just by a different kind of numbers geek. So, today I’ll take a brief look at the U.S. inflation history and the different ways inflation can ruin our retirement. Let’s jump right into this…

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