From January 2026, tax authorities globally have shifted from VAT policy design for digital services to active enforcement and data-driven compliance. Over 125 countries now have VAT/GST on non-resident digital service providers. The 2026 shift involves: AI-driven cross-matching of VAT/GST filings against platform transaction data; expanded marketplace deemed-supplier rules (EU, Saudi Arabia, India); tighter non-resident registration triggers; real-time payment data access by tax authorities; and coordinated data sharing between tax administrations. India is intensifying OIDAR GST compliance monitoring using payment platform data from 2026.