AI Tax Advice: A Cautionary Tale for Taxpayers

For most of his adult life, the author maintained a straightforward tax situation, typically filing through standard tax software without complications. However, after selling shares from an employee stock purchase plan (ESPP) to fund a wedding, he turned to AI for guidance on the complex tax implications. Despite initial skepticism, the AI-generated advice seemed convincing, even prompting the author to upload a 1099 form from his brokerage. The AI suggested using a different number from the W-2 to calculate gains, which initially appeared correct. Upon review, a certified public accountant (CPA) identified the advice as potentially incomplete, noting that the W-2 check was more significant than the AI indicated and that some taxable activities on the 1099 were unaddressed. Experts like J.T. Eagan, a clinical assistant professor of accounting at Purdue University, caution that AI's persuasive delivery can mask errors, as seen in a case where a chatbot provided mechanically sound but factually incorrect tax advice to students. While the AI's mistake in this instance was minor, the broader concern is that non-experts may trust AI without verifying the details, risking costly errors. OpenAI's usage policies explicitly warn against using its models for high-stakes decisions without human review, yet the allure of AI's efficiency and clarity can lead users to overlook this caution.