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Avalara, the maker of sales tax automation technology is getting even bigger. The Bainbridge Island company today is announcing that it has purchased UPC Matrix Master, descbied as the the world’s largest database of Universal Product Codes with specialized sales taxability data.

The database had previously been operated by Tax Matrix. Terms of the deal were not disclosed, though about 10 employees from Tax Matrix will join Avalara as a result of the deal.

The Matrix Master is a patented, multi-state, product taxability database, holding taxability information for more than 10 million products in thousands of tax jurisdictions across the U.S.

“Until recently, Avalara was primarily known as a technology company that revolutionized and came to dominate the sales tax industry with our cloud-based service model,” said Avalara CEO Scott McFarlane in a release. “Now we also lead the way with our sales tax content, which means we can touch more businesses in more industries with higher levels of accuracy than anyone. This is a big win for our current and future customers, who will see even better levels of ease and accuracy from our service.”

Avalara now employs more than 300 people, up from about 200 in April 2011. Founded in 2004 by Rory Rawlings, Jared Vogt and Scott McFarlane, the company raised $20 million in venture capital last summer from Battery Ventures and others.

Previously on GeekWireFast-growing Avalara opens new Seattle office at Pier 55


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