TaxJar - TaxJar simplifies sales tax filing for eCommerce sellers.
Avalara - Cut tax compliance costs, not corners. Avalara automates tax compliance and can help improve accuracy while reducing costs.
Vertex Cloud - Vertex Cloud offers sales and use tax automation solutions.
Thomson Reuters ONESOURCE - ONESOURCE tax software and solutions synchronize every aspect of your work and link international, country, state and local tax laws.
EXEMPTAX - Manage your resale and sales tax exemption certificates from collection to audit in minutes. Try it Free, no credit card required!
Canopy Tax - Canopy is a cloud-based software to make resolving IRS collections easier on tax professionals and their clients.