Avalara Q2 2022 Financial Analysis

2 Disclaimer CERTAIN INFORMATION CONCERNING THE PARTICIPANTS In connection with the proposed acquisition of Avalara, Inc. (the "Company") (NYSE: AVLR) by affiliates of Vista Equity Partners Management, LLC (the "Merger"), the Company entered into an Agreement and Plan of Merger, dated as of August 8, 2022, with Lava Intermediate, Inc., a Delaware corporation (“Parent”), and Lava Merger Sub, Inc., a Washington corporation and wholly owned subsidiary of Parent (the "Merger Agreement"). The Participants (as defined below) intend to file a definitive proxy statement and accompanying proxy card with the SEC to be used to solicit proxies for votes (the "Proxy Solicitation") opposing the adoption of the Merger Agreement at the special meeting of shareholders (the "Special Meeting") and regarding other proposals that may come before the Special Meeting. The Participants in the Proxy Solicitation are anticipated to be Altair US, LLC, a Delaware limited liability company ("Altair US"), and Richard Bailey (collectively, the "Participants"), the Manager of Altair US. As of the date hereof, each of the Participants may be deemed to beneficially own, in the aggregate, 850,892 shares of common stock of the Company. THE PARTICIPANTS STRONGLY ADVISE ALL SHAREHOLDERS OF THE COMPANY TO READ THE PROXY STATEMENT AND OTHER PROXY MATERIALS AS THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. SUCH PROXY MATERIALS WILL BE AVAILABLE AT NO CHARGE ON THE SEC'S WEB SITE AT HTTP://WWW.SEC.GOV. IN ADDITION, THE PARTICIPANTS IN THIS PROXY SOLICITATION WILL PROVIDE COPIES OF THE PROXY STATEMENT WITHOUT CHARGE, WHEN AVAILABLE, UPON REQUEST. REQUESTS FOR COPIES SHOULD BE DIRECTED TO [email protected]. DISCLAIMER This presentation does not constitute an offer to sell or a solicitation of an offer to buy any of the securities described herein in any state to any person. In addition, the discussions and opinions in this press release and the material contained herein are for general information only and are not intended to provide investment advice. All statements contained in this presentation that are not clearly historical in nature or that necessarily depend on future events are "forward-looking statements," which are not guarantees of future performance or results, and the words "anticipate,” “believe,” “expect,” “potential,” “could,” “opportunity,” “estimate,” and similar expressions are generally intended to identify forward-looking statements. The projected results and statements contained in this presentation and the material contained herein that are not historical facts are based on current expectations, speak only as of the date of this presentation and involve risks that may cause the actual results to be materially different. Altair US, LLC disclaims any obligation to update the information herein and reserves the right to change any of its opinions expressed herein at any time as it deems appropriate. ALTAIR US, LLC HAS NEITHER SOUGHT NOR OBTAINED THE CONSENT FROM ANY THIRD PARTY TO USE ANY STATEMENTS OR INFORMATION CONTAINED HEREIN THAT HAVE BEEN OBTAINED OR DERIVED FROM STATEMENTS MADE OR PUBLISHED BY SUCH THIRD PARTIES. EXCEPT AS OTHERWISE EXPRESSLY STATED HEREIN, ANY SUCH STATEMENTS OR INFORMATION SHOULD NOT BE VIEWED AS INDICATING THE SUPPORT OF SUCH THIRD PARTIES FOR THE VIEWS EXPRESSED HEREIN. Altair US, LLC

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