Does good financial advice have a shelf life?

Sometimes those questions shape our lives, and sometimes they shape the way we show ourselves to the people around us—the way we parent, the way we support our spouses, the way we earn a living, and the way we think about money. I find myself doing this more as I get older, but nowhere more than with my daughter.

For me, it’s less about questioning the past and more about questioning whether the advice we’ve inherited has kept pace with the world around us. The question I always dwell on is simple: what was true then, and what is true today?

Sometimes those questions are cultural, sometimes they are happening, and sometimes they are simply the result of new research and a better understanding of the world. They all have one thing in common, namely that they force us to separate timeless principles from advice that was perfectly relevant at a different time.

Parenting advice has changed—does it have financial advice?

One parenting debate seems to arise in every generation. Should you let the children cry, or should you answer them every time they cry?

For years, many parents have been encouraged to let their children cool down. Today, child development experts emphasize responsive parenting, arguing that constant responsiveness to a child’s needs helps build secure attachment. Like most parenting debates, it’s not entirely black and white, but it’s a useful reminder that our understanding is changing. What one generation accepts as conventional wisdom, the next is willing to question.

That made me wonder what parenting advice and financial advice really have in common, and the answer, I think, is a lot. Both are passed down from generation to generation as if they were universal truths. Both are based on the economic and social reality of their time. And both deserve to be questioned every time—not because previous generations were wrong, but because the world is changing. And when things change, perhaps the better question is not whether the advice was good or bad, but whether it is still relevant to the context in which we live today.

A conversation I will never forget

I graduated from Cardiff University when I was 20 and was lucky enough to get a job at General Motors right away, which meant moving from Cardiff to Dubai. For the first time in my life, I was not a poor university student. I had access to a real salary and, with it, the freedom to make real financial decisions.

Shortly after signing my application, I had an incredibly frustrating conversation with my parents. They wanted me to set up a savings account and automatically transfer a significant portion of every paycheck to it before I had a chance to spend it or do whatever frivolous thing they thought I might do with it. The underlying message seemed to be that I couldn’t be trusted to make good financial decisions on my own, and that my new freedom needed supervision. Ironically, I continued to make many financial mistakes anyway.

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Looking back now, I don’t think the advice itself was wrong. In fact, I think saving consistently is one of the healthiest financial habits anyone can develop. But I also don’t think I’ll have the same conversation with my daughter when she gets her first job. I probably wouldn’t talk so much about managing her money and more about helping her learn to make good decisions about it.

The goal still feels right, but the delivery feels like it belonged to a different generation. And that’s what made me wonder how much of the financial advice we keep repeating today hasn’t been questioned for a long time.

What financial advice has reached its expiration date?

Take home ownership, for example. For decades, buying a home was almost synonymous with financial success. It was how families built wealth, built stability, and measured their progress. Is that still true?

House prices have changed dramatically, career paths look different, people are moving to cities more often, remote work has changed where we live, and investment opportunities have expanded far beyond real estate.

A few weeks ago, I was talking to my financial advisor, who suggested that we may be the last generation to see home ownership as important, attainable, or socially desirable, and that renting for life may become the norm. I’m not sure you’re right; I’m also not sure you’re wrong.

Then there is the old advice of saving 10% of your salary. Or 15%. Whatever number your parents taught you. Also, the principle is difficult to argue with, because saving always never goes out of style. But perhaps the surrounding conversation has changed.

If you’re just starting out in your career and your earning potential is still growing, is it really better advice to focus more on saving another 2% of your salary? Or is it to use that energy to create another income stream, start a side hustle, work freelance on the weekends, or create something that will meaningfully increase your earning potential over the next ten years? None of this is financial advice, and saving isn’t what I’m asking. What I’m asking is the strategy, the fixed percentages, and whether we’ve become so attached to it that we’ve stopped asking if that same force can do more elsewhere.

A similar thought crossed my mind when I considered the advice to never finance a car. That rule made perfect sense when financing meant paying high interest on an asset that lost value year after year. Today, however, zero percent financing exists, there are low-interest promotional financing options, keeping your money invested while borrowing cheap money can sometimes be a smart decision, and building a credit history has real value as well.