What are some alternatives?
When comparing TaxJar and Avalara, you can also consider the following products
Taxamo - SaaS solution for the new 2015 EU VAT rules
FreshBooks - The ideal accounting software for small business owners.
Octobat - Octobat provides automated tax-compliance and accounting for digital businesses.
Xero - Xero is online accounting for your small business.
TaxCloud - TaxCloud makes it easy for wholesalers and retailers to comply with sales tax laws.
Intacct - Intacct is a cloud-based accounting and financial management system that is designed for the businesses of all levels.