Poland's KSeF e-invoicing system requires all VAT‑registered businesses to submit B2B invoices via a centralized platform using the FA(3) XML format. Large taxpayers must comply from February 2026, others from April 2026, with a grace period through 2026 and penalties starting in 2027. The system assigns unique identifiers, stores invoices for ten years, and imposes up to 100 % VAT penalties for non‑compliance after the grace period.

The blog explains how embedding tax automation into marketplace platforms can unlock revenue, reduce risk, and support compliance across multiple jurisdictions. It outlines platform reporting obligations in the EU (DAC7), UK, Mexico, Canada, Australia, and other countries, and highlights the benefits of integrated tax services for sellers and platform operators.

On 8 October 2025, Irish Revenue released a roadmap for implementing the EU's ViDA e‑invoicing and real‑time reporting requirements. The plan phases the rollout, with large corporates required to adopt the system in November 2028, all VAT‑registered businesses in intra‑EU B2B trade by November 2029, and full compliance for all cross‑border EU B2B transactions by 1 July 2030. The definition of a large corporate was clarified on 10 February 2026.

The article explains how indirect tax compliance has evolved from a SaaS-like model to an infrastructure layer, driven by regulatory changes such as e‑invoicing mandates that embed compliance into transactional workflows. It highlights the shift toward networked operating layers, with platforms focusing on connectivity, interoperability, and real‑time regulatory interaction rather than just calculation and filing. The piece notes that regulatory velocity and mandate rollouts are now key drivers of platform selection and market dynamics.

The Czech government will reintroduce its Electronic Reporting of Sales (EET) regime from 1 January 2027 under a revised “EET 2.0” format, covering in‑person payments such as cash, card and QR code transactions. Small businesses earning below CZK 1 million can opt for an “EET OFF” exemption or simplified regime, and the Ministry estimates the system could raise an additional CZK 14–15 billion annually in VAT and income tax.