How does SuiteTax determine the tax code for transactions with expense lines?

AI generated answer (using internal Slack threads):

In NetSuite, SuiteTax determines the tax code for transactions with expense lines based on the tax groups and categories that are set up in the system. The tax code is chosen based on the shipping address of the transaction. For example, if you have a tax group set up for a specific state, and the shipping address for the transaction is in that state, then the tax code associated with that tax group will be applied to the transaction. In some cases, you may need to create multiple tax groups to account for different tax rates for different types of items. For instance, if you have some items that are taxed at 10% and others that are taxed at 11%, you would need to create two separate tax groups, one for each tax rate. Then, when a transaction includes items from both groups, the appropriate tax rate would be applied to each line item based on the tax group it belongs to. If you have a situation where the tax on an expense is not being picked up correctly, it may be because the tax group or category for that expense has not been set up correctly. You may need to review your tax setup and make sure that all of your tax groups and categories are configured correctly. In some complex tax scenarios, you might need to use a tax engine like OneSource or Avalara, or use custom GL lines or scripts to handle the tax calculations. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******