  Most knowledge graph use cases are data-centric, focusing on representing
data entities and their semantic relationships. There are no published success
stories to represent large-scale complicated business logic with knowledge
graph technologies. In this paper, we will share our innovative and practical
approach to representing complicated U.S. and Canadian income tax compliance
logic (calculations and rules) via a large-scale knowledge graph. We will cover
how the Tax Knowledge Graph is constructed and automated, how it is used to
calculate tax refunds, reasoned to find missing info, and navigated to explain
the calculated results. The Tax Knowledge Graph has helped transform Intuit's
flagship TurboTax product into a smart and personalized experience,
accelerating and automating the tax preparation process while instilling
confidence for millions of customers.
