Avalara Analyst Day Virtual

Healthy expansion and cross-sell Annual upsell* YOY Growth Quarterly upsell* YOY 35% 44% Growth 25% 43% 49% 49% 43% 47% 57% 51% 57% 51% 53% 2019 2020 2021 Expansion 1Q 21 1Q 22 Cross-sell** *Data is based on upsell sales that are invoiced through our primary U.S. billing system and represents >80% of total upsell sales in each period. Sales equates to annual contract value bookings which generally includes subscription contracts, usage, and one-time services. **Cross-sell includes addition of new products and services, SST, and new connectors to an existing account AVALARA ANALYST DAY VIRTUAL | 17

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