Global Tax Calculation API
Sales tax, VAT, and GST — accurately calculated anywhere on Earth.
- Jurisdictions
- 14,000+
- Regions covered
- 7+
- Coverage
- Global
API reference and code samples for Global Tax Calculation land when the product ships.
Overview
What is Global Tax Calculation?
The engine behind GoodVat's upcoming Shopify, WooCommerce, and other platform plugins: sales tax, VAT, and GST calculated across 14,000+ jurisdictions in the US, Europe, UK, Australia, South America, India, the Middle East, and beyond — with registration and filing built in, not bolted on.
This is the product GoodVat has been building toward — installed as a plugin for sellers on Shopify, WooCommerce, and other platforms, or called directly as an API by teams who want to build on it themselves. It combines rooftop-accurate geolocation, real-time rate data, and product-taxability rules across 14,000+ tax jurisdictions worldwide to calculate the exact tax owed on any transaction, anywhere. Unlike calculators that stop at a number, GoodVat closes the loop: it monitors your economic nexus thresholds as you grow, registers you for sales tax, VAT, or GST the moment you cross into a new jurisdiction, and files your returns on schedule — the same category of product as Quaderno, TaxCloud, and Stripe Tax, built to be more accurate and dramatically more affordable.
Global from day one
Built for 14,000+ tax jurisdictions, not just one country
What actually matters
Compliance teams don’t switch tools for a longer feature list — they switch for these.
Radically more affordable
Flat, transparent pricing — not the percentage-of-revenue or per-transaction fees that make legacy tax platforms painful to scale with.
Built to be more accurate
Rooftop-level jurisdiction resolution, powered by GoodVat’s own geocoding — not ZIP-code approximations, the single biggest source of tax calculation errors.
Real-time rate updates
Tax rates and rules change constantly, everywhere. GoodVat’s rate database is continuously monitored and updated, so you’re never calculating against a stale rule.
One API for the whole world
Sales tax, VAT, GST, and digital-services taxes handled through a single integration, instead of stitching together a different tool per region.
Registration and filing included
Most tools stop at calculation. GoodVat also handles registering you in new jurisdictions and filing your returns.
Audit-ready by default
Every calculation is logged with the exact rule and rate applied, so you have a defensible trail the moment an auditor comes asking.
How it works
One address, every rule
Feed in an address and a line item — ideally already standardized and geocoded by GoodVat’s own APIs — and get back the exact combined rate, jurisdiction breakdown, and product-taxability treatment, anywhere in the world.
Nexus & threshold monitoring
GoodVat tracks economic nexus thresholds across every jurisdiction you sell into, so you know the moment you need to register — before a tax authority notices for you.
Registration & filing, not just calculation
When you cross a new threshold, GoodVat can register you for sales tax, VAT, or GST in that jurisdiction and file your returns on schedule — without you hiring a compliance team.
Marketplace-aware
Understands marketplace facilitator laws, so you never over-collect on sales where Amazon, Etsy, or another marketplace already remits tax on your behalf.
Works with the stack you already use
Native integrations so tax is handled where the sale actually happens — no middleware to maintain.
E-commerce & marketplaces
Payment providers
Accounting software
Pricing
Announced when the product ships.
Be first in line when Global Tax Calculation ships
Announced at launch · No metering surprises · Same flat pricing
Looking for something else?
If our standard tiers don't match your volume, data residency, SLA, or custom workflow requirements — we'd love to talk. We're always happy to listen and tailor solutions for your team.
Start with what’s live today
Get an API key and make your first standardized address in minutes. $5 a month, unlimited requests, no card games.