taxomate integrates with both Xero's and QuickBooks Online's tracking (Tracking Categories in Xero or Classes in QuickBooks).
Step 1: Setup Classes or Tracking Categories
For QuickBooks Online you have to setup classes. Click here for directions.
For Xero you have to setup tracking categories. Click here for directions.
Step 2. Map to Classes or Tracking Categories
In taxomate head over to Mappings. Scroll down to the bottom of the page and select Enable QuickBooks Classes or Xero Tracking Categories.
You will now have the ability to differentiate between MFN Class and FBA Class. Select a QuickBooks Class or Xero Tracking Category for each transaction type you would like to track.