Over the past decade, the European Union (EU) has introduced a range of new sustainability reporting rules designed, in part, to encourage sustainable finance and investment. However, over the past two years, a policy shift in the EU has resulted in removing many of these rules on the basis that they imposed too many regulatory burdens on companies and investors. While law clearly has the capacity to facilitate sustainable finance and investment, it also has the capacity to impose unnecessary constraints on businesses, investors and lenders which inhibit economic development and investment. Analysis of the EU’s legal innovations in this area can provide a unique insight into the optimal legal framework to promote sustainable finance. Hence, this article aims to extract lessons from EU law reform around sustainable finance and reporting.