The just published second partial volume on Banking Contract Law (HGB) covers the two principal aspects of commercial banking namely, payment transactions and lending. The commentaries place special emphasis on thinking that is based on underlying European and to some extent international normative standards while also taking into account transnational business activity. The two parts are written in interrelated fashion and presented in parallel, thus easing comparison. Stefan Grundmann has final responsibility for the section on payment transactions and Moritz Renner for the section on lending.