Automating Tax Expertise with Custom GPT – Need Advice

Hey everyone,

I'm an accountant, and I want to build a custom GPT that specializes in tax laws. The idea is to upload all relevant tax laws, regulations, and books (in PDF format) so that when I ask a tax-related question, the AI can not only provide an answer but also cite the exact legal reference.

I want to automate this process so that whenever tax laws are updated, the AI stays current. Has anyone here worked on something similar? What’s the best way to structure and automate data ingestion for a knowledge-based AI like this? Any tools or workflows you'd recommend for making the AI more accurate and reliable in referencing legal texts?

Looking forward to your insights!