From Shoebox to Spreadsheet. Build an AI Tax Pipeline With Paperless-ngx and Claude

Implicator PRO Briefing / 10 Mar 2026

Same ritual every year. Cardboard box on the kitchen table, lid half off, stuffed with crumpled gas station receipts and a W-2 that nobody bothered to open. Three brokerage statements from three different firms, because of course you didn't consolidate those accounts when you said you would. Medical bills rubber-banded together. And the laptop open beside it all, TurboTax loaded, cursor blinking in an empty field, waiting.

You already know who types the numbers in.

Here's what nobody talks about with tax season: the software isn't the hard part. TurboTax works. FreeTaxUSA works. Even the IRS free file thing works, if you qualify. What eats 6 to 15 hours every spring is everything that happens before the software. Sorting. Reading faded receipts. Squinting at PDFs. Re-keying dollar amounts from one screen into another, praying you don't transpose a digit. The IRS puts the national number at 7.1 billion hours spent on compliance each year, roughly 13 hours and $290 per person. And the ugly truth is that most of those hours go toward moving paper around, not toward understanding the tax code.

This is a tutorial for building a pipeline that kills the paper-shuffling part. When you're done, three things will be running together: Paperless-ngx, an open-source system that scans, OCRs, and indexes every receipt you own; an AI layer that auto-tags each document the moment it arrives; and Anthropic's Claude wired in through the Model Context Protocol, yanking data out of your archive and dropping it straight into a Google Sheets spreadsheet. The kind of spreadsheet you can email to your accountant without embarrassment.

Monthly cost runs $10 to $20 self-hosted, maybe $25 to $35 if you pay someone to host it for you. AI fees for the whole year? Between $6 and $30 for most households. The pipeline doesn't sleep in April and wake up in January. It runs all year.