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電子請求書とコンプライアンスのブログ
Invocie 上で運用するタックスチームのための実地ノート、技術解説、運用ガイド。
The State of E-Invoicing in 2026: A Global Map
Where mandates stand right now — from KSA's clearance regime to the EU's Peppol-driven interoperability and the patchwork rolling out across LATAM and APAC.
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ZATCA Phase-2 in Saudi Arabia: A Field Guide for Sellers
Phase-2 is no longer a future concern — every VAT-registered seller now has to clear invoices through Fatoora before issuing them. Here's the practical playbook.
2026年3月22日
UAE FTA E-Invoicing: 5% VAT, TRNs, and What's Coming in 2027
The UAE is moving from a post-audit regime to a fully interoperable one. Here's what changes for sellers — and why your TRN matters more than ever.
2026年3月8日
Peppol BIS Billing 3.0: How EU Cross-Border Invoicing Actually Works
The 4-corner model in plain English: who signs what, where validation happens, and why your Access Point is the most important integration choice you'll make.
2026年2月19日
Clearance vs. Post-Audit: Choosing the Right Compliance Model
Every e-invoicing mandate in the world is built on one of two foundations. The choice your tax authority made dictates the entire architecture of your finance stack.
2026年2月4日
UBL 2.1 in Plain English: The XML Standard Behind Modern E-Invoicing
Almost every major e-invoicing mandate in the world emits UBL 2.1 under the hood. Here's a no-jargon walkthrough of the parts you actually need to understand.
2026年1月21日
Hash Chains for Tamper-Evident Audit Trails
ZATCA mandates them, EU auditors love them, and they're cheap to implement. Here's how chained SHA-256 turns an invoice ledger into something you can prove the integrity of.
2026年1月8日
Top 7 ZATCA Rejection Reasons (and How to Fix Them)
From clock drift to malformed VAT numbers, these are the rejections we see most often in production — with the fix for each.
2025年12月18日
Designing a Multi-Region E-Invoicing API: Lessons From the Trenches
If you're building infrastructure that serves both clearance and post-audit countries, you have one chance to get the abstractions right. Here's what we learned the hard way.
2025年12月4日
What Comes After 2026: AI, ViDA, and the End of Tax Returns
Tax authorities are quietly building toward a world where the invoice is the return. Here's what that means — and how to position your finance stack for it.
2025年11月20日