VATCalc Calculator vs Vatstack

VATCalc Calculator determines VAT and GST for domestic and cross-border transactions, either as transactions occur or in batches. It can connect to shopping carts, ERPs, ecommerce platforms, invoicing systems, and other applications through web access and an API. Calculations draw on codified national tax laws, including the EU VAT Directive, and can include legal references and suggested adjustments. Users can map goods and services themselves, use pre-mapped HS, TARIC, and CPA codes, or apply coding assumptions with VATScript. Customer-selected exchange-rate data can be incorporated.

The product supports REST API feeds, HTTP, FTP, and other exchange formats. Listed integrations include SAP S/4HANA and ECC, SAP Public Cloud, Oracle NetSuite, Oracle JD Edwards, Odoo, and Chargebee. Transactions can flow into VAT returns through the shared VAT Filer platform, and the calculator can also be incorporated into VATCalc’s e-invoicing service. VATCalc describes the service as built on Amazon Web Services to handle transaction volumes and daily peaks without latency planning. It states that it is ISO 27001 certified. Pricing is on request, and a free trial is available.

Vatstack is a VAT API for businesses selling telecommunications, broadcasting and electronic services to customers around the world. It provides rates for domestic and cross-border sales, updating them when government changes take effect. The API can calculate VAT-inclusive or VAT-exclusive prices, determine customer location from an IP address or billing address, verify VAT numbers for exemption, and adjust rates for some digital products such as ebooks. Real-time VAT and GST checks cover the 27 EU member states, Australia, Norway, Singapore, Switzerland and the United Kingdom. EU and UK checks include a consultation number, and validation records are stored in the cloud and replicated between EU data centers on AWS. Users can import a CSV for bulk checks. Vatstack compiles VAT OSS and EC Sales List reports using European Central Bank exchange rates, and integrates with Stripe to sync invoices, location evidence and tax IDs and to adjust reports after refunds. A free plan is available; paid plans start at $15/mo.