CCH Sales Tax Office - CCH Sales Tax Office is an online tax calculation tool designed for larger corporations that manage the sales queries.
TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
Vertex O Series - Centralize and streamline indirect tax management across the enterprise.
Avalara - Cut tax compliance costs, not corners. Avalara automates tax compliance and can help improve accuracy while reducing costs.
EXEMPTAX - Manage your resale and sales tax exemption certificates from collection to audit in minutes. Try it Free, no credit card required!
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.