
vatlayer API
VatStack
Taxid.dev
Justaxit
Vatcheckapi.com
VATnode.dev
Lookuptax
Instant EU VAT number validation for seamless compliance and automation.

JavaScript.com
JavaScript Quiz
Learn JavaScript
JavaScript Knowledge Map
Do you speak JavaScript?
50 Tips on JavaScript
dateDropper Javascript
A full list of JavaScript operators with examples

Which is more popular?
Based on our record, JavaScript Operator Lookup seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | thevatapi.com | joshwcomeau.com |
| Pricing | — | |
| Company | Startup from the United Kingdom · 1 - 9 employees · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


The VAT API is a fast and reliable solution for validating EU VAT numbers via a simple, developer-friendly API. Designed for businesses, SaaS platforms, and eCommerce sites operating across Europe, it automates VAT ID verification in real time—helping you stay compliant, reduce fraud, and...
No description of JavaScript Operator Lookup yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of JavaScript Operator Lookup yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing The VAT API and JavaScript Operator Lookup.
The VAT API's answer
Built on AWS (Amazon EC2/API Gateway), with Postman collection for docs, JSON/REST API architecture pulling VAT data from VIES and HMRC endpoints
The VAT API's answer
businesses all over the world
The VAT API's answer
Digital businesses, SaaS and e-commerce platforms needing accurate, real-time VAT rate lookup, VAT number validation, and compliant invoice generation across EU & UK.
The VAT API's answer
Launched in late 2014 for new EU VAT rules (TBE services). Version 2 released in April 2019 with rewritten core, better docs, infrastructure, pricing, and future-proofing (Brexit, EU changes)
The VAT API's answer
A UK-based, Amazon‑hosted service with real-time VAT rates, cross-border validation (EU/UK), compliant invoicing features, IP-based geolocation, currency conversion, audit-ready logs, and developer-friendly docs.
The VAT API's answer
Offers mature, stable service since 2015, scalable AWS infrastructure, direct integration with official EU Commission and HMRC tools, and built-in VAT-compliant invoicing.
Share your experience with using The VAT API and JavaScript Operator Lookup. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking The VAT API since Jun 2025.
If you replace your || with ?? You should get the behaviour you are after. This is a good reference for what the operators do in js: https://joshwcomeau.com/operator-lookup. Source: about 5 years ago
When comparing The VAT API and JavaScript Operator Lookup, you can also consider the following products.

Free VAT Validation & EU VAT Rates API
Compare vatlayer API to The VAT API or JavaScript Operator Lookup:

A free resource for learning and developing in JavaScript
Compare JavaScript.com to The VAT API or JavaScript Operator Lookup:

Simplify VAT & GST for your digital business.
Compare VatStack to The VAT API or JavaScript Operator Lookup:

Check your knowledge by having fun.
Compare JavaScript Quiz to The VAT API or JavaScript Operator Lookup:

TaxID is a developer-first API to validate VAT and tax IDs across 31 countries — 27 EU member states via VIES, plus UK, Switzerland, Norway, and Australia. Stripe-style errors, JSON responses, 100 free validations/month.
Compare Taxid.dev to The VAT API or JavaScript Operator Lookup:

Learn JavaScript with guided tests and flashcards
Compare Learn JavaScript to The VAT API or JavaScript Operator Lookup: