Avalara has completed a $21-million-funding round that the sales-and-use-tax vendor began in the spring. Documents filed with the SEC show that only $30,014 in equity remained unsold out of the original offering of $21,250,001. The first sale of stock by the privately held company was completed on April 15 in a year in which it has been stocking up on executives, including its new president, Kevin Riegelsberger.