 SEATTLE--BUSINESS WIRE--- AVLR--Avalara NYSE: AVLR, a leading provider of tax compliance automation software for businesses of all sizes, today announced it has acquired Track1099 LLC, a company that provides online software and services for cost-effectively managing, e-filing, and e-delivering IRS forms, including 1099s, W-2s, W-9s, and more. Every year, businesses must file information and withholding forms to report employee and contractor income to the IRS. There were an estimated 3.5 billion o 