Quebec's QST does not compound: the tax rule most checkout code gets wrong
Quebec's QST does not compound: the tax rule most checkout code gets wrong Most checkout tax code applies rates one after another, each on the runni…
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Validate VAT Numbers on Subscription Renewal, Not Purchase
Originally published at vatnode.dev . The version on vatnode.dev is the canonical source — refer to it for the latest content. Validate VAT Numbers…
VIES Uptime, Measured — 28 Member States, One Sample Every 15 Minutes
Originally published at vatnode.dev . The version on vatnode.dev is the canonical source — refer to it for the latest content. {/* RECOMPUTE BEFORE…
Build vs Buy: VAT Validation via VIES or an API
Originally published at vatnode.dev . The version on vatnode.dev is the canonical source — refer to it for the latest content. Build vs Buy: Should…
x402 designs out the intermediaries that produce your tax records
x402 lets software pay for things over HTTP. An agent calls a paid API, a fraction of a cent in USDC settles on-chain, the agent gets its data. No a…
How to Bulk Re-Validate Customer VAT IDs
Originally published at vatnode.dev . The version on vatnode.dev is the canonical source — refer to it for the latest content. How to Bulk Re-Valida…
What Is a VAT ID? A Plain Guide
Originally published at vatnode.dev . The version on vatnode.dev is the canonical source — refer to it for the latest content. What Is a VAT ID (VAT…
How I Built a Self-Employment Tax Calculator with Zero Dependencies
When you get a W-2, the government takes its cut before you ever see the money. Social Security, Medicare, all of it, handled by payroll software. W…
EU VAT validation API's: a practical comparison
At some point in every B2B SaaS project, someone asks: "can we skip tax for EU business customers?". And then you spend a friday afternoon finding o…
kra-mcp: Kenya Revenue Authority Tax Compliance via MCP
PAYE, VAT, PIN registration — now accessible via AI agents pip install kra-mcp Server #20 in the AI-KungFU East Africa Coordination Infrastructure.…