Why am I getting this rate in California?

Overview

I am using avatax to calculate sales tax on an invoice for Sacramento CA, but it is showing 8%, when it should be 8.5%

Avalara Avatax

California tax rates depend on the origin and destination address in the sale:
- Sales from outside of the state use the Destination address tax rates only
- Sales originating within California use the tax rate of the Origin county, and the destination tax rates for all other rates (City and Special Local Jurisdictions)
- Some services are taxed using only the destination address, check the tax code to confirm what kind of taxability is being applied to your line item
This means that for some sales completed within California, the tax rate on the sale will be a combination of the Origin and Destination jurisdictions, so the tax rate at the Destination address will not match the actual rate calculated on the sale.