I Asked ChatGPT How To Become a Millionaire by 40 — Here's What a CFP Said It Got Right (and Wrong)
Certain life goals are more achievable than others. Your odds of becoming an astronaut, for instance, aren’t very high at this stage in the game. You probably won’t buy your own island, either. But becoming a millionaire by 40? That might actually be doable, with the right plan and expectations.
So where do people turn for guidance? Increasingly, many ask ChatGPT for generalized advice about hypothetical scenarios, like how to make your first million by the time you hit the big 4-0. That can be a helpful starting point, but it doesn’t compare with the expertise of a professional financial advisor.
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So, I made the comparison for you: After asking the AI for its take, I ran its advice by John Jones, CFP, EA, and investment advisor representative at Heritage Financial, to see what it got right — and where it fell short.
1. Know the Actual Target
First, ChatGPT wants you to understand what being a millionaire actually means: “Millionaire usually means a net worth of $1 million (assets minus debt), not just cash in the bank,” the AI wrote. “That includes investments, retirement accounts, maybe real estate.”
It’s not a bad place to start. Jones agrees, saying that, on the whole, “AI can be an excellent tool when used within context and taken at face value.” He found ChatGPT’s response to be “very foundational and practical.”
2. Time and Investing Do Most of the Work
Next, ChatGPT broke down a hypothetical example of how compounding returns can build wealth over time.
If you start at:
Age 25: Investing about $600–$800 per month at about a 7% annual return can get you close to $1 million by 40.
Age 30: You may need $1,200–$1,600 per month.
Age 35: It jumps to $2,500 or more per month.
“Not exact, but directionally accurate,” it wrote. “The earlier you start, the less painful it is.”
Jones is generally a fan of this advice because it echoes much of what he’s told his own clients. “A saying I use often with clients is, ‘Time in the market beats timing the market,’ which the response emphasized,” he said.
However, he’s concerned about the way the AI presents wealth creation as a simple, linear calculation. In reality, financial planning evolves alongside real-life circumstances.
“One of the items I like to reference when considering digital adviser solutions is that the human connection — and the dynamic of go-go, slow-go and no-go years — are difficult for a model or calculator to comprehend,” he said. “These are real experiences individuals walk through.”
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3. Earn More (This Matters More Than People Admit)
ChatGPT had some blunt words for people who want to become millionaires while they’re still young: “You can only cut so much spending. Increasing income is the real lever.”
To that end, it suggested a few approaches for boosting income:
Build compounding skills (such as tech, sales, finance, health care or trades with ownership potential)
Switch jobs strategically every few years
Negotiate salary — this alone can add hundreds of thousands over a career
Jones doesn’t object to the goal of earning more, especially since “increasing income is important for additional contributions and compounding.” Still, he finds this advice overly simplistic and, frankly, unrealistic. He’s worried that it sets standards that can make people feel like failures for reasons beyond their control.
“What about income ceilings or earning capacity? Sometimes a person cannot simply ‘earn more,’” he said. “I wish everyone could, and it is a good aspiration to work toward, but sometimes it’s impossible.”
4. Invest Consistently (Not Creatively)
Unsurprisingly, ChatGPT also advised against flashy or “exotic” investing strategies and instead emphasized consistency. According to the AI, many millionaires rely on a few core principles:
Low-cost index funds that track the S&P 500
Tax-advantaged retirement accounts, such as a 401(k) or IRA
Automatic monthly contributions
Jones agrees with the overall message but says it leaves out a critical human factor: emotions. For instance, the AI doesn’t describe how people should handle extended market downturns.
“It’s easy to say, ‘ride the wave and stay invested,’ but human reactions to volatility, risk and the tendency to sell in moments of panic can impact an individual’s potential goals and objectives,” he said.
He also noted that ChatGPT glossed over portfolio structure and adjustment.
“How you manage drawdowns can be almost as important as growth,” he said.
5. Control Lifestyle Creep
ChatGPT also warned aspiring millionaires against lifestyle creep. It describes this phenomenon as “a common trap: Income rises, spending rises just as fast.”
The AI says you should combat lifestyle creep in a few ways:
Increase your savings rate as your income grows
Save or invest 20% to 40% of your income, if possible
Avoid high-interest debt (especially credit cards)
Jones agrees with this take, saying that lifestyle creep is important to avoid.
6. The Biggest Thing the AI Misses
While Jones didn’t have heavy critiques of the AI’s general advice, he was critical of one major omission: tax planning.
It’s a major oversight since building wealth isn’t just about earning money, but also about what you get to keep.
“Wealth management should be built around tax efficiency to maximize potential net returns and wealth over time,” he said. “Small inefficiencies in tax planning can add up and represent a significant cost to investment returns.”
The Bottom Line
OK, ChatGPT had some reasonable, high-level guidance for aspiring millionaires. But Jones’ review of the AI’s advice only underscores why you need a more personalized plan.
“The response didn’t place as much importance on actual implementation,” he said. “Without a structured plan and ongoing adjustments, a TVM calculation and the advice provided can fall significantly short over time.”
AI can help frame the conversation. A human adviser helps adapt it to real life.
This article was provided by MoneyLion.com for informational purposes only and should not be construed as financial, legal, or tax advice.
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