The post explains that e‑invoicing success hinges on technical validation, especially schematron rules, rather than just electronic transmission. It highlights how failures in these rules can delay payments, increase DSO, and create manual intervention for AP teams. The author plans to share deeper insights into validation and integration in future posts.

The article explains how usage‑based billing models in AI and SaaS create VAT compliance challenges, including timing of tax points, prepaid credits, hybrid pricing, tiered pricing, and the need for visibility into billing systems. It stresses that tax teams must engage early with product, billing, and finance to manage risk.