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

Omni Calculator
calculator.net
Build vs. Buy Calculator
DeveloperToolStack
DevNestTools
DevTools Advanced
DevTools.fit
Free, no-signup calculators for the money side of building software and freelancing

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | thevatapi.com | devfinancetools.com |
| Pricing | ||
| Company | Startup from the United Kingdom · 1 - 9 employees · 2025 | 2026 |
| 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...
DevFinanceTools is a collection of free, no-signup calculators for the money side of building software and freelancing. Everything runs in your browser — no account, no tracking beyond basic page-view analytics — and every tool shows its formulas and benchmarks so you can check the maths...
What each product offers, as listed by its team.


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 DevFinanceTools 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 DevFinanceTools.
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 DevFinanceTools. For example, how are they different and which one is better?
When comparing The VAT API and DevFinanceTools, you can also consider the following products.

Free VAT Validation & EU VAT Rates API
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Helping you make rational decisions, one calculation at a time.
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Simplify VAT & GST for your digital business.
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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
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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.
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Should you build an internal tool? Or just buy it?
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