Avalara, Inc., together with its subsidiaries, provides cloud-based solutions for transaction tax compliance worldwide. The company offers a suite of compliance solutions that enable businesses to address the complexity of transaction tax compliance; process transactions in real time; produce detailed records of transaction tax determinations; and reduce errors, audit exposure, and total transaction tax compliance costs. The company's solutions include AvaTax, a solution for determining sales tax in the United States; Avalara Compliance Cloud Returns for tax return preparation, filing, and remittance; which creates, validates, stores, and manages sales tax exemption.

It also provides professional services, including nexus studies and back filing services, voluntary compliance initiatives, tax registrations, reverse audits, audit defense, and specialized tax research. The company was formerly known as Advantage Solutions, Inc. and changed its name to Avalara, Inc. in December 2005. Avalara, Inc. was incorporated in 1999 and is headquartered in Seattle, Washington.