H&R Block taps OpenAI and Microsoft for an AI tax prep assistant

Tax season is practically designed to give people a headache, and for most filers, the first stop when confusion hits has always been a messy Google search.

H&R Block wants to change that routine. The tax prep giant just rolled out AI Tax Assist, a conversational chatbot integrated directly into its paid DIY tax filing software to answer confusing tax questions on the fly.

A walled garden built on tax code

Tax filing leaves zero room for AI hallucinations, so H&R Block took a guarded approach.

Built on models from OpenAI and Microsoft, the assistant doesn't crawl the open web. Instead, it was trained strictly on H&R Block’s proprietary tax library and refined by its in-house accountants and attorneys. The company says the model only pulls answers from vetted company data.

During a demo, the company showed how a gig worker could start their return and simply ask, "What can I deduct as business expenses as an Uber driver?" The bot spit out eligible deductions, letting the filer pick what applied to them. It also handles questions on exemptions and messy topics like crypto taxes.

The feature sits behind H&R Block’s paid tiers starting at $35, with no price hike attached, though free-tier filers are left out. If users don't trust an answer or hit a wall, they can escalate the query to a live human tax expert via phone.

Why it matters

We think turning generative AI into an in-workflow explainer is the smartest way to deploy LLMs in finance right now. Taxpayers don't necessarily want an autonomous black box submitting their return, but they desperately need a translator for bureaucratic tax codes. For gig workers and side-hustlers trying to figure out valid deductions, having an immediate, plain-language assistant cuts down massive friction.

The competitive landscape is also pushing this shift. Rival TurboTax has already integrated AI to flag missing information and optimize deductions. At the same time, the IRS is testing its own government-run Direct File pilot. Commercial tax prep giants spent decades lobbying to keep the tax code complex and defend their turf; now, they have to deliver genuine software value to prevent users from ditching them for free state alternatives or standard search engines.

The lingering question is accountability. While H&R Block walled off the model from the open internet and staffed an accuracy monitoring team, it didn't provide a concrete answer when pressed on liability if the bot delivers inaccurate advice. Double-checking with a human expert is still an option, but for now, the ultimate legal responsibility remains entirely on the filer.