Your accountant sure will.

I'm for sure reinventing the wheel here but I've had an LLM generate an app that walks me through my existing tax routine I've been running with for years. Thus no real numbers go to any LLM I just give it my situation and it fills out the form.

The plan now is to retrieve the current year's tax forms then have an LLM compare them to stored versions from last year, and look for variances (e.g. new field, new form requirements, etc) all of which an LLM would excel at (whilst basic math it historically did not).

Some inference providers have a Zero Data Retention policy

Worst case scenario what does OpenAI do with your tax return?

Oh look, yet another reason to use local inference.

In Germany, there are companies like Buhl data that let you do your tax return very easily and give a live estimate of your return based on the data you provided. From my experience over the past 5 years, its prediction error is less than 5%.

Not yet, and not completely.

Some accountants need to make judgement calls. LLMs are not great at many judgement calls yet.

10% of the time it works every time