Claude Is Doing Taxes for Americans, Sparking Angst Among CPAs

Martijn Lancee has an accountant, but he still hates doing his taxes. They’re complicated: He and his wife have a mortgage on a home in the Bay Area, she owns a small business, and he makes money consulting for companies on artificial intelligence. Each year his tax adviser sends him a long list of tedious requests for information on business expenses, bank statements, bills. In February, Lancee had an idea. “Hey,” he typed into Claude Code, “how can you help me file my taxes?”

At the chatbot’s instruction, Lancee downloaded a bunch of his tax documents as PDFs on ...