Avalara vs TaxJar: Which is best for you?

Avalara easily handles all the sales tax calculations for transactions, and is especially great since it integrates with our ERP system.

The installed package contains locked-down flows, Apex classes, and process builders that have errors, but cannot be modified by admins.

They do a good job of handling sales tax issues.

more than you collect and not send any kind of alert or make any kind of contact informing you of this atrocity. When you discover a major issue (like overpayment), they remind you the service is not managed, the onus is on you to check everything, and offer fee based services to refile returns once you've corrected data they used to over remit sales taxes to states with a wait time of *6 to 8* weeks.