3 Dated Rules of Thumb Retirees Should Think Twice About
The tried-and-true investing and saving rules of thumb retirees depend on may no longer be as reliable as they hoped. Don’t let dated “rules” steer your retirement wrong.
Profit and prosper with the best of Kiplinger's advice on investing, taxes, retirement, personal finance and much more. Delivered daily. Enter your email in the box and click Sign Me Up.
You are now subscribed
Your newsletter sign-up was successful
Want to add more newsletters?
Delivered daily
Kiplinger Today
Profit and prosper with the best of Kiplinger's advice on investing, taxes, retirement, personal finance and much more delivered daily. Smart money moves start here.
Sent five days a week
Kiplinger A Step Ahead
Get practical help to make better financial decisions in your everyday life, from spending to savings on top deals.
Delivered daily
Kiplinger Closing Bell
Get today's biggest financial and investing headlines delivered to your inbox every day the U.S. stock market is open.
Sent twice a week
Kiplinger Adviser Intel
Financial pros across the country share best practices and fresh tactics to preserve and grow your wealth.
Delivered weekly
Kiplinger Tax Tips
Trim your federal and state tax bills with practical tax-planning and tax-cutting strategies.
Sent twice a week
Kiplinger Retirement Tips
Your twice-a-week guide to planning and enjoying a financially secure and richly rewarding retirement
Sent bimonthly.
Kiplinger Adviser Angle
Insights for advisers, wealth managers and other financial professionals.
Sent twice a week
Kiplinger Investing Weekly
Your twice-a-week roundup of promising stocks, funds, companies and industries you should consider, ones you should avoid, and why.
Sent weekly for six weeks
Kiplinger Invest for Retirement
Your step-by-step six-part series on how to invest for retirement, from devising a successful strategy to exactly which investments to choose.
Wouldn’t it be great if following just a few “one-size-fits-all” financial formulas really could make planning a successful retirement less problematic?
Unfortunately, there’s no such thing.
Oh, sure, there are theories and guidelines and strategies. And some can be helpful as a starting point for financial planning. But there also are some widely used rules of thumb that can end up pointing retirees in the wrong direction, leading them toward a bumpy future.
From just $107.88 $24.99 for Kiplinger Personal Finance
Become a smarter, better informed investor. Subscribe from just $107.88 $24.99, plus get up to 4 Special Issues
Sign up for Kiplinger’s Free Newsletters
Profit and prosper with the best of expert advice on investing, taxes, retirement, personal finance and more - straight to your e-mail.
Profit and prosper with the best of expert advice - straight to your e-mail.
And this is not just because we’re all different, with different challenges, goals and paychecks. (Although that’s a big part of it.) But there also is this: The world around us keeps changing, and those long-accepted approaches to investing and income planning often require updating.
Here are three investing and retirement “rules” or strategies you’ve probably heard of, along with the reasons they might not work for you.
The 60/40 Rule
Regardless of their goals, risk tolerance or other relevant factors, investors frequently are told that a generic “60/40” portfolio mix (with about 60% invested in stock and 40% in bonds) is the best way to go while they’re still working and saving for retirement. And I get it: It’s safer than overcommitting to equities. But that conservative 60/40 mix also could potentially shortchange portfolio growth in years when owning more stock might make sense.
Then, when those investors retire, financial professionals often suggest moving even more of their money to bonds — because “when you’re older, you should be more cautious.”
Though these bond-heavy allocations might have worked out just fine in the past — when interest rates were much higher, and inflation was much lower — today, it can be a recipe for trouble.
Remember: Bonds are loans. If you invest in bonds when interest rates are low (and they really don’t get any lower than they were last year), you’re basically handing over your hard-earned money for little in return. Indeed, with the current rate of inflation, you could end up being paid back with dollars that are worth less than what you invested in the first place.
The amount of risk in your portfolio should be based on factors besides your age, including your retirement income requirements, your desire for growth or a combination of both. Your portfolio mix should be carefully chosen — and adjusted over time — to suit your individual needs.
The 4% Rule
Another troublesome old-school formula is the “4% rule,” which suggests you can safely withdraw 4% from your portfolio when you retire and, from that point on, continue to withdraw 4% annually while adjusting for inflation.
This rule of thumb has been around for decades, and backtesting has shown the concept did make sense … in the past. However, because interest rates today are dramatically lower, it’s been proposed that retirees might have more success making their money last if they lower their expectations to a 3% starting withdrawal rate. And even then, the number you decide on may need adjusting when the market is struggling.
Passive Investing Theory
If you can’t beat ’em, join ’em.
That’s the basic premise behind passive investing, which suggests that cherry-picking individual stocks is an exercise in futility. Fans of passive investing believe that since most investors won’t ever manage to reliably “beat” the market, it makes more sense to invest in an index fund built to match or track it.
And they aren’t wrong.
Most active stock managers can’t beat the market consistently over the long term, especially when you add in the extra cost for the work they do. Therefore, owning a wide swath of the market (i.e., an index matched by a mutual fund) can be smart and cost-efficient.
The problem is this approach doesn’t necessarily apply to bonds — or real estate or other alternative investments like commodities — in the same way it does to stocks. And yet I seldom see any distinction made among the different asset classes.
The theory also doesn’t apply across all indices.
For example, if you buy an index fund that tracks the S&P 500, you’re matching an index that always changes based on what all investors think the top 500 companies are worth. It’s “market-weighted,” and that makes sense to me.
But what about the Dow Jones Industrial Average? This index is mentioned a lot on the news, but it contains only 30 stocks — and the actual companies or stocks in this index have changed 55 times since the index was established in 1896. So, wouldn’t the index creator, in this case Dow Jones, be considered a sort of active manager?
The truth is, it doesn’t have to be an either-or argument. Many investors can benefit from blending both passive and active investing strategies. Mutual funds are easy to buy, easy to understand and offer broad market exposure. But there’s nothing wrong with using a portion of your portfolio to actively prepare for or respond to changing market conditions or to further diversify your holdings.
The key is flexibility.
The Bottom Line for Retirement Savers
Financial theories and rules of thumb are best used as general guidelines, not set-in-stone rules. Many were meant to make planning easier — but if you treat them as a mandate or force yourself into a formula that doesn’t meet your needs, risk tolerance or goals, you’ll likely find you’re making things harder than they have to be. And you could find the promised path to success has instead thrown you way off course.
Kim Franke-Folstad contributed to this article.
Investment advisory services made available through AE Wealth Management, LLC (AEWM). AEWM and F.W Miller Financial are not affiliated companies.
Insurance products are sold based on the suitability standard at both the state and insurance carrier level; this means that product recommendations must meet the stated financial needs and objectives of the client. Securities products are sold based on the best interest standard; this means that investment recommendations must be in the best interest of the client with any conflicts of interest fully disclosed to the client. Investment advisory services are required to be provided in accordance with a fiduciary standard; this means that the advice must be in the best interest of the client with any conflicts of interest fully disclosed to the client. 1413054 7/22
The appearances in Kiplinger were obtained through a PR program. The columnist received assistance from a public relations firm in preparing this piece for submission to Kiplinger.com. Kiplinger was not compensated in any way.
Profit and prosper with the best of Kiplinger's advice on investing, taxes, retirement, personal finance and much more. Delivered daily. Enter your email in the box and click Sign Me Up.

As founder and president of F.W. Miller Financial, Frederick Miller’s focus is on helping clients work toward their retirement dreams through a well-thought-out financial strategy. Fred (who made Eagle Scout at the age of 13) adheres to the fiduciary standard, providing customized advice and making decisions based on the client’s best interests. He is a graduate of the University of Louisiana at Lafayette, and he and his wife, Alexa, have three children.
-
Dow Leads in Mixed Session on Amgen Earnings: Stock Market TodayThe rest of Wall Street struggled as Advanced Micro Devices earnings caused a chip-stock sell-off.
-
How to Watch the 2026 Winter Olympics Without OverpayingHere’s how to stream the 2026 Winter Olympics live, including low-cost viewing options, Peacock access and ways to catch your favorite athletes and events from anywhere.
-
Here’s How to Stream the Super Bowl for LessWe'll show you the least expensive ways to stream football's biggest event.
-
How to Add a Pet Trust to Your Estate Plan: Don't Leave Your Best Friend to ChanceAdding a pet trust to your estate plan can ensure your pets are properly looked after when you're no longer able to care for them. This is how to go about it.
-
Want to Avoid Leaving Chaos in Your Wake? Don't Leave Behind an Outdated Estate PlanAn outdated or incomplete estate plan could cause confusion for those handling your affairs at a difficult time. This guide highlights what to update and when.
-
I'm a Financial Adviser: This Is Why I Became an Advocate for Fee-Only Financial AdviceCan financial advisers who earn commissions on product sales give clients the best advice? For one professional, changing track was the clear choice.
-
I Met With 100-Plus Advisers to Develop This Road Map for Adopting AIFor financial advisers eager to embrace AI but unsure where to start, this road map will help you integrate the right tools and safeguards into your work.
-
The Referral Revolution: How to Grow Your Business With TrustYou can attract ideal clients by focusing on value and leveraging your current relationships to create a referral-based practice.
-
This Is How You Can Land a Job You'll Love"Work How You Are Wired" leads job seekers on a journey of self-discovery that could help them snag the job of their dreams.
-
65 or Older? Cut Your Tax Bill Before the Clock Runs OutThanks to the OBBBA, you may be able to trim your tax bill by as much as $14,000. But you'll need to act soon, as not all of the provisions are permanent.
-
The Key to a Successful Transition When Selling Your Business: Start the Process Sooner Than You Think You Need ToWay before selling your business, you can align tax strategy, estate planning, family priorities and investment decisions to create flexibility.