I need to read the actual tax rate that will be applied to sales to a specific customer using the 2015 .Net API.

I can look up the list of SalesTaxAgency objects that correspond to the value found in Customer.BillToContact.Address.SalesTaxCode.

The problem is that the SalesTaxAgency object in Sage.Peachtree.API does not have any method or property I can see that would return the actual tax rate.

When debugging, I can see the MyDomainEntity object (Protected) of the SalesTaxAgency which does have a RateCalculation property that contains the actual tax rate.  This is a SalesTaxAgency object, but from the Sage.Peachtree.Domain namespace, and is not available to my code because it is protected.

So, is there any way to find the sales tax rate for a customer?