The client’s tax rates in the client profile Practice > Billing Options > Tax rates section. See Setting Up Client Billing Options for more information.
Tax rates established in lists. See Managing Tax Rates for more information.
Sales tax can be calculated three different ways, depending on whether WIP is being billed.
When WIP is being billed.
When WIP is not selected. Sales tax is only calculated if the client has a tax authority.
When the client is progress billed on a final bill.
Tax calculated on the WIP being final billed using the final bill hierarchy
+ Tax calculated on the progress bill using the client tax rate =
Sales tax.
To override the calculated sales tax, do the following: