The ASEAN-Japan Comprehensive Economic Partnership (AJCEP) was signed in April 2008 and entered into force in December 2008.  For Malaysia, it entered into force on 1 February 2009. It was negotiated as a single undertaking.

ASEAN and Japan is targeted to sign the Services and Investment chapters under the AJCEP Agreement by 2014.

ASEAN and Japan has a total population of 744.8 million with a combined GDP of US$8.29 trillion in 2012.