Avalara is a tax compliance platform to help businesses automate tax processes and ensure compliance. Some of the key features of Avalara include Avalara AvaTax for sales and use tax calculations, Avalara Returns for preparing, filing, and remitting sales tax returns, Avalara e-Invoicing for automating finance operations and complying with e-invoicing mandates abroad, Avalara Cross-Border for classifying items and calculating duties and tariffs, and Avalara Exemption Certificate Management for collecting, storing, and managing compliance documents.