DAVO solves the problems associated with the payment and filing of sales tax for both the merchant and the state. The company's process automatically and passively collects and pays a merchant's sales tax to the state on a daily basis utilizing either card payment or ACH networks.On April 26, 2021, DAVO Technologies was acquired by Avalara. The terms of the transaction were not disclosed. DAVO Sales Tax automatically sets your sales tax aside daily, then files and pays it when due, on time, and in full. Guaranteed. Try it free.