About Avalara
Avalara built the category of automated transaction tax: AvaTax calculates sales tax, VAT, and GST in real time inside thousands of commerce and ERP integrations, with registration, returns, and exemption-certificate management around it. Founded in 2004, it was taken private by Vista Equity Partners in a roughly $8.4B deal in 2022.
In November 2025 it launched Avi, described as the first AI-powered workforce for tax compliance: a lead AI agent orchestrating specialized agents for determination, filing, exemption validation, registration, property tax, reporting, and research — with human oversight built in.
Avi, launched November 2025, is a lead AI agent orchestrating a network of specialized compliance agents that autonomously handle tax determination, filing, exemption certificates, registrations, and research, with human oversight; Avi is also embedded in Avalara Tax Research.
Highlights
- Taken private by Vista Equity Partners for ~$8.4B in 2022
- Won G2's Best Software Award for Accounting & Finance Products four years running (through 2026)
- 1,200+ integrations across commerce platforms and ERPs
Third-party reviews
Users value rate accuracy and deep state tax expertise but flag customer support and occasional calculation-to-return mismatches.
Read on G2Solid overall satisfaction, though customer service and value-for-money score noticeably lower than the product itself.
Read on CapterraRatings belong to the cited platforms and change over time — last checked August 2026. TaxAIs does not collect its own reviews; follow the links above for current scores and full review text.
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