E-Bus Tax Reports - Reconcile tax on imported AR Invoices?

We will use E-Business tax primarily for AP transactions.  Our Sales Invoices are generated outside of Oracle and we will manually calculate the taxes (low volume & high value). For AR we will not use the transaction work-bench and we will import our sales invoices via Auto Invoice (amounts billed and manually calculated tax amount).

We have two choices re tax in AR. 1) Turn tax off in AR or, 2) Leave tax on.

If we leave tax on and e-bus tax calculates taxes on the imported invoices, is there some type or reconciliation report that we can run to compare the imported tax amount, to the tax amount calculated by e-bus tax and report any potential variances?