VAT Sense

VAT Sense is a REST API for validating VAT numbers and retrieving tax and country data for software integrations. It checks numbers against live records in the UK, EU, Australia, Norway, Switzerland, South Africa and Brazil. The API also provides EU VAT rates and VAT or GST rates from other countries, plus VAT-compliant invoicing information. Currency conversions to GBP and EUR use official HMRC and European Central Bank rates. For an audit trail, a validation can return a government consultation number when the requester supplies its own VAT number.

The API requires HTTPS and HTTP Basic Auth; VAT Sense says it does not support client-side CORS requests because that could expose account keys. Libraries are available for Python, Node.js, PHP, Go, Ruby, C#/.NET and Java, with Postman collections linked in the documentation. General limits are 300 requests per minute, and UK VAT validation is limited to 3 requests per second. A free plan is available; the pricing note lists paid plans from $6.99/mo. Prices exclude VAT, and plans can be paid in GBP, USD or EUR.

VAT Sense combines validation with rate, currency and invoicing data through a REST API. Check the request limits and server-side authentication requirements against your integration needs.

VAT Sense suits developers and organizations integrating VAT checks, tax rates or related data into their own services. Its API libraries cover several programming languages, and its free plan offers a way to get started.

VAT Sense is a server-oriented REST API for VAT validation, tax rates, currency conversion and compliant invoicing. It suits developers assembling international tax workflows who can protect credentials on a backend. Its broad jurisdiction coverage and language libraries are useful, but request quotas make plan selection central to the decision.

Overview

VAT Sense puts VAT-number checks, VAT and GST rates, country data, currency conversion and basic VAT-compliant invoicing behind one API. All plans include the complete API, so upgrading primarily increases capacity rather than adding separate feature modules.

Validation uses live records across the UK, EU, Australia, Norway, Switzerland, South Africa and Brazil. Currency conversion to GBP and EUR uses official HMRC and European Central Bank rates. Supplying the requester’s own VAT number can make a validation return an official government consultation number, giving finance teams a useful audit reference.

Key features

• International tax coverage: EU VAT rates plus VAT and GST rates from other countries support cross-border calculations, with VAT calculation spanning 179 jurisdictions.
• Integration tooling: Official libraries for Python, Node.js, PHP, Go, Ruby, C#/.NET and Java reduce language-specific integration work. Postman collections in the documentation are useful for building and checking requests.
• Authentication and transport: HTTPS, HTTP Basic Auth and 256-bit SSL protect API traffic. Client-side CORS requests are not supported because exposing account keys would be unsafe, so browser-only implementations need a server intermediary.
• Throughput: General traffic is limited to 300 requests per minute, while UK VAT validation is limited to three requests per second. These ceilings matter for batch imports and high-volume checkout flows.
• Invoicing: Basic e-invoicing support is included, but the product is primarily an API data and validation service rather than a full invoicing application.

Pricing

VAT Sense uses a freemium model, with paid access from $6.99 per month. Prices exclude VAT, and payment is available in GBP, USD or EUR. Every tier carries the full API; the practical difference is monthly request capacity.

• Free: €0.00 per month and 100 requests monthly. It is suitable for prototypes, evaluations and very low-volume checks, but the cap is quickly restrictive for live commerce.
• Starter: €5.99 monthly or €57.50 yearly for 500 requests. This is the smallest paid allowance and fits modest internal tools.
• Basic: €11.99 monthly or €115.10 yearly for 2,000 requests. It gives small production integrations more headroom without changing functionality.
• Standard: €34.99 monthly or €335.90 yearly for 10,000 requests. This is a more credible level for recurring business transactions.
• Plus: €69.99 monthly or €671.90 yearly for 25,000 requests, aimed at larger operational workloads.
• Premium: €119.99 monthly or €1,151.90 yearly for 50,000 requests, the best fit among these tiers for substantial volume, subject still to per-minute and UK validation limits.

Annual billing lowers the arithmetic cost versus paying monthly, while the free allowance remains too small for sustained high-volume use.

Platforms

VAT Sense is delivered as an API. It is therefore a component for web, mobile or business software rather than a standalone end-user application, and its server-side authentication requirement should be part of the architecture from the outset.

Who it's for

Choose VAT Sense if you need one integration for validation, rates, conversion and country data across many jurisdictions, particularly in a supported programming language. It is less suitable when you need a browser-only implementation, generous unauthenticated access, or a complete visual invoicing product.

Pros and cons

Pros

• Live validation reaches seven named markets, including the UK, EU, Australia and Brazil.
• HMRC and ECB conversion rates provide authoritative GBP and EUR reference points.
• Broad official library coverage shortens integration work for common development stacks.
• Consultation numbers can strengthen validation audit trails.

Cons

• The free plan allows only 100 requests per month, limiting production usefulness.
• UK checks have a separate three-per-second ceiling in addition to the general quota.
• Basic e-invoicing and API-only delivery will not replace a full accounting suite.
• Credentials must remain server-side because client-side CORS is unsupported.

Alternatives

For a broader app-and-API offering with Android, iOS and web access, consider LOVAT, which also has a free plan and trial. VAT MTD is a better fit for iOS and macOS users focused on single-VAT-number plans. Choose Kleos when a paid Android/iOS product with per-user tiers is preferable. VAT Direct targets UK bridging and digital records, including up to 500 transactions per period on its free service. VATlayer is another API freemium option with a 100-request free allowance and paid request tiers. Vatstack suits teams wanting API and web access with a developer tier. Kintsugi focuses on nexus monitoring and liability auditing through an API. CCH Integrator Indirect Tax is a paid web alternative.

See the wider VAT Software selection for more options.

Verdict

VAT Sense is a strong choice for developers needing consolidated international VAT data, validation and conversion through a server-side API. Its main reason to choose it is the combination of broad jurisdiction coverage, official rate sources and mature client-library support. Look elsewhere if your workload exceeds the quotas, requires client-side calls, or demands a full end-user invoicing system.