Can I assign multiple VAT rates/categories to a transaction?

Yes, you can assign multiple VAT rates and categories to transactions in Soldo by splitting a transaction into lines. Read more about that here (link to: How can I split a transaction into multiple line items?). Each line must be assigned a NetSuite Category and NetSuite Tax Rate before the transaction can be exported to NetSuite. These will be available in NetSuite after the transaction has been exported. When you export these transactions to NetSuite, the Journal will include a Credit line with the total amount of the transaction and a Debit line for each VAT rate and Category. 

Note: The other NetSuite lists imported, such as tracking codes and custom lists, can only be applied to the transaction as a whole and can’t be assigned to a certain line.