Formidable barriers stand between the modern financial system and the hundreds of millions of Chinese citizens still using costly informal credit. For many, the financial data that could be used to give them a credit score that would lead to a fair priced loan exist but are not being used. This analysis finds that the most difficult barriers cutting these data off from their potential use for greater financial inclusion are the legal and political restrictions on data sharing and use, economic and competitive concerns from data holders, and the technical difficulty of integrating disparate systems. Policies that encourage coordination between public authorities and private actors in finance and technology can go a long way towards making these data available and driving access to credit in China. This shift would not only help borrowers: It would also encourage the needed economic rebalancing towards consumption, increase competition in the financial sector, raise efficiency through better credit allocation, and contribute to sustainable economic growth and social welfare.