The Capital Adequacy Directive was a European directive that aimed to establish uniform capital requirements for both banking firms and non-bank securities firms, first issued in 1993 and revised in 1998.

The original 93/6/EEC (CAD1) directive was amended by 98/31/EEC (CAD2), to incorporate banks' own estimate of capital using value-at-risk techniques.

This came into force together with recast of a related banking directive on 20 July 2006.

The main change was the adoption of Basel II guidelines into the directive.

The legislation on this matter current as of 2016[update] is known as the CRD IV package (Capital Requirements Regulation and Directive).