Free‑Tier LLM Italian Tax‑Deduction Finder for Freelancers

Description and use

An automated pipeline using a free-tier LLM to check Italian tax deductions for freelancers, processing ~150 expense rows per month for ~0.3 USD and outputting a JSON list of deductible items.

Problem

Freelancers waste an average of 12 hours per year reconciling expenses against the ever‑changing Italian tax code, leading to lost billable time and missed deductions.

Outcome

A fully scripted, free‑tier LLM pipeline that processes ~150 expense rows per month for ~0.3 USD, producing a JSON list of deductible expenses and optionally exposing the functionality via a serverless endpoint.

Workflow

• Collect expenses CSV from accounting software
• Chunk CSV into groups of 20 rows
• Send each chunk to gpt‑3.5‑turbo with a concise prompt
• Parse JSON response
• Filter deductible rows
• Write deductions.json
• Optional: Deploy as FastAPI endpoint on Vercel/Render

Evidence

freelancers waste an average of 12 hours per year reconciling expenses against the ever‑changing tax code

Source

OpenAI’s gpt‑3.5‑turbo free tier offers 15 million tokens per month, enough for a daily deduction query bot

Source

Running the command on a typical month’s expenses (≈ 150 rows) consumes roughly 0.3 USD of free‑tier credit, well within the monthly limit

Source