The US and EU rules implementing Basel III follow many aspects of Basel III closely, but there are major differences in approach in several key areas. The interplay between the US and EU implementation of Basel III and the gradual "phase in" of certain rules, particularly on liquidity and leverage, will have a profound impact on the relative competitiveness of relevant US and EU financial institutions.

This article, and the accompanying US/EU comparison and summary table, highlight points of international consistency and divergence.