Using transaction-level trade data from China Customs and loan data from the China Development Bank (CDB), we find that CDB credit to strategic industries at the top of supply chains leads to lower prices, higher volume, and more product varieties and destinations for exports for firms in downstream industries. These positive spillovers stem from reduced intermediate goods prices and increased trade credit from upstream to downstream firms caused by CDB loans. Notably, this surge in import activity displaces U.S. firms within the same industry but bolsters downstream U.S. firms’ business performance and employment.

Exploiting staggered changes in state-level corporate income taxes, we document that corporate social responsibility (CSR) performance improves substantially following tax cuts, reflecting firms' reliance on internal funds for CSR investments. However, tax increases do not significantly weaken CSR performance, implying that CSR commitments are sticky on the upside. Tax cuts enhance CSR performance more for firms with greater tax exposure, tighter financial constraints, better corporate governance, stronger prosocial preferences, or higher risk. Additional analysis of the 2017 federal tax reform substantiates the CSR effect of tax cuts. Overall, our findings highlight essential CSR features and illustrate how corporate tax policy drives corporate sustainability.