AI Can’t Be Your Financial Advisor—Yet. Here’s Why

AI is getting smarter every day. It can write, code, analyze data—even help you pick stocks. But can it replace your financial advisor?

According to MIT finance professor Andrew Lo, the answer is complicated.

“The problem that we have to solve is not whether AI has enough expertise,” Lo said. “The answer right now is, clearly, AI has the financial expertise. What they don’t have is that fiduciary duty.”

Here’s the issue: A human financial advisor has a legal obligation to put your interests first. Break that rule, and they face real consequences—regulatory penalties, lawsuits, even criminal charges.

AI? Not so much.

Large language models like ChatGPT, Claude, and Gemini can deliver sophisticated financial answers. But they have no skin in the game. If they give you bad advice, there’s no accountability. No one gets fined. No one gets sued.

And people are using them anyway. A Credit Karma poll found that 66% of Americans who’ve used AI have asked it for financial advice. Among millennials and Gen Z, that number jumps to 82%.

Even more striking: 85% of those who got AI financial advice actually acted on it.

Sebastian Benthall, a senior research fellow at NYU School of Law, calls this “a big open regulatory question.” Who’s responsible when AI gives advice that loses you money? The answer: unclear.

Lo says AI can be useful for basic financial concepts—like understanding Medicare or learning about investing. But when it comes to your specific situation—calculating taxes, planning retirement, deciding on a rollover—AI is dangerous.

“One of the things about LLMs that I find particularly concerning is that no matter what you ask it, it’ll always come back with an answer that sounds authoritative, even if it’s not,” Lo said.

Surprisingly, AI isn’t even good at financial calculations. So if you’re relying on ChatGPT to crunch numbers for your 401(k)? Double-check. Triple-check.

Of course, human advisors aren’t perfect either. Not all of them are fiduciaries. Stockbrokers, insurance agents, and some financial intermediaries don’t owe you that same legal duty.

But at least with humans, there’s a face. A license. A trail. With AI, it’s a black box.

Until regulators step in and impose fiduciary standards on AI platforms, treat them like a research assistant—not your advisor.