AccurateTax vs Quaderno

AccurateTax provides TaxTools, a cloud service for e-commerce sales-tax compliance. It calculates sales tax in real time from customer addresses, product taxability and applicable rules, while refining addresses to a US Postal Service-approved format. Reports let sellers file independently, or they can select services covering registration, filing and payment. Optional exemption-certificate management handles documents for exempt transactions. Integrations include Ability Commerce, Adobe Commerce, Magento Open Source, Miva Merchant, osCommerce, Shopify, ShopSite, Stone Edge Order Manager and WooCommerce. An XML API supports custom carts and other applications. AccurateTax identifies itself as a Streamlined Sales Tax Certified Service Provider and says free service is available under the SST contract where applicable. Pricing depends on processed orders and optional services, with charges per order rather than per API call. Basic Service lists 99.99% uptime.

Quaderno has no write-up on Specifiction yet; its figures are above.