Tax trackers: the all-seeing eye of the Treasury

Published on May 14, 2026 | Translated from Spanish

Tax authorities are sharpening their aim. The use of fiscal trackers—systems that cross-reference bank data, electronic invoicing, and cryptocurrency movements using artificial intelligence—enables real-time transaction monitoring. Governments defend this as a tool against fraud, but critics warn of privacy risks and potential algorithmic errors that affect innocent people.

A digital cybernetic eye over a financial map, with bank data and cryptocurrencies cross-referenced by AI in real time.

Big data and AI: the new eye of the tax authority 🔍

These systems process millions of transactions per second, analyzing spending patterns, income, and transfers. Machine learning algorithms detect anomalies such as undeclared income or circular movements in crypto assets. Electronic invoicing and banking information are cross-referenced in real time, creating a detailed tax profile. The goal is to reduce the shadow economy, but the accuracy of these models depends on data quality and algorithm design.

The tax authority loves you so much it even watches your crypto savings 😅

Now it turns out that buying a coffee with Bitcoin isn't as anonymous as you thought. The fiscal tracker not only knows you paid for that coffee, but also calculates how much you should have declared from selling your NFTs. The good news: if the algorithm makes a mistake, you'll have to explain to an official why your income is so low. The bad news: that official will use the same system to verify your story.