Your AI Tax Assistant Might Cost You More Than You Think

46% of Americans trust AI for tax advice. 21% plan to actually use it for filing this year. Free and fast sounds great, but tax professionals are sounding the alarm: it's riskier than you think.

The Hidden Costs of Free AI Help

Ask ChatGPT or Claude about tax deductions, and you'll get confident, detailed answers. The problem? Those answers might be confidently wrong.

First, there's the hallucination problem—AI tools can fabricate information that sounds authoritative. Second, their training data is months or years outdated. ChatGPT-4o knows tax law through June 2024, while Claude stops at August 2025. Tax codes change constantly.

"There's a lot of nuance that generative AI simply doesn't understand," explains Patrick Runyen, director of advisory at Modera Wealth Management. "It won't be able to gauge secondary impacts specific to your situation."

Your Data Is No Longer Yours

The bigger risk? Data security. Upload your W-2 or type in your Social Security number, and that information becomes part of the AI's learning process—potentially forever.

"You should never, ever upload any kind of sensitive personal information into a public forum like that," warns Laura Carruba, accounting instructor at George Mason University. "It is now public information."

With new tax law changes affecting overtime and tip income reporting, using generic AI for complex situations could trigger costly mistakes.

The Professional Alternative

Not all AI tax help is created equal. Companies like H&R Block and Intuit offer AI-powered assistants built specifically for taxes:

Generic AI Chatbots:

• Outdated training data
• No data protection
• Generic responses
• No accountability

Professional AI Tools:

• Trained on current tax law
• IRS-certified data security
• Context-aware responses
• Company liability

Intuit's Assist tool saves users an average of 50 clicks and reduces taxable income by an average of $12,000, according to VP Keela Robison.

The IRS Won't Accept "AI Made Me Do It"

Here's the bottom line: you're responsible for what's on your tax return, regardless of who or what helped you prepare it.

"The alibi can't be that ChatGPT told me to do it," Runyen notes. "If you underpay on a tax liability, there's likely to be interest and penalties. Trying to cut corners to save a few dollars may cost you much more down the road."