AkuCalc vs ShipVAT

AkuCalc is an API product for calculating sales tax inside ERP, ecommerce, and billing workflows. It covers all US tax jurisdictions, including more than 13,000 jurisdictions, and supports Canada. Calculations use transaction addresses for rooftop-accurate results, while rates and rules update automatically as regulations change. Businesses can configure taxability by product, jurisdiction, and transaction type; complex or research-intensive mappings are scoped separately. A valid certificate stored in AkuCert is applied automatically as an exemption. The API connects custom ERP, ecommerce, billing, and other business systems, and featured integrations include Microsoft Dynamics 365, Business Central, Dynamics GP, Acumatica, Sage Intacct, QuickBooks, and NetSuite. Transaction data supports reporting, reconciliation, return preparation, and audit workflows. Clarus describes guided implementation covering configuration, integration setup, testing, and training, with timing depending on systems and data complexity. AkuCalc is aimed at finance, tax, controller, ERP, and growing-business teams. Pricing is on request through a custom quote.

ShipVAT provides an API for calculating VAT, sales tax, and GST across 93 jurisdictions. The maker lists the EU, UK, US, Canada, and Australia among supported regions, and describes economic nexus threshold intelligence for all 50 US states and beyond. API functions include tax calculations, rate and threshold lookup, transaction and customer management, VAT validation, compliance reports, webhooks, and address validation. ShipVAT says rates include a source URL, verification timestamp, and effective dates, with tax data curated from official sources. Developers can use a TypeScript SDK, OpenAPI 3.0, Swagger UI, and curl examples. Endpoints use Bearer-token authentication with test and live key formats. The API is described as working with Paddle, LemonSqueezy, PayPal, or any payment stack. The Free plan costs nothing and allows 100 API calls per month. Pro costs $49 a month for 50,000 calls; Enterprise pricing is custom and its listed call limit is unlimited.