Fast-growing Avalara is making another buy, purchasing Tax Technology Services for an undisclosed price. Avalara said in a release that the deal will extend its leadership in the area of sales tax exemption certificate management.

Tax Technology Services is the maker of CertCapture, a service that acquires and maintains resale certificates, W-9s, excise tax, and other time sensitive documents.

“Our aim is to be the clear leader in every market we enter,” said Avalara CEO Scott McFarlane in a release. “We already had a preeminent position in certificate management, taking on more new customers every year than the rest of the market combined. The addition of TTS, with its excellent technology, strong customer base, and leading experts in the industry extends our lead and solidifies our position.”

Founded in 2002, all 25 of the TTS employees will join Avalara. The unit will continue to be based in Raleigh, North Carolina.

Avalara, which now employs nearly 400 people, raised $20 million last summer.

“Our goal is and always has been to combine the best technologies with the best content to deliver the best compliance solutions available,” said an Avalara spokesperson. “We will continue to either build internally or make strategic acquisition to achieve this, but it is probably a good bet we have our eyes on other targets.”

Previously on GeekWireAvalara acquires world’s largest database of Universal Product Codes

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