Great question! There are a couple of apps in the app store that look like the integrate with FBA.
I would recommend getting in touch with the app developers directly to see if they are able to help you out with your taxes, and you can do that by clicking **Get Support** in the app store!
I hope this helps!
I definitely recommend using Taxjar or Taxify to handle this for your business. Using Amazon as your fulfillment channel is great from the fulfillment side of the business but can create sales tax nexus for your business in several states in addition to your home state.. Taxjar and Taxify are both equiped to help you.
Here's a guide on from Taxjar on this topic:
Hope that helps.