<p>The paper aims to introduce ethical remarks into the monetary circuit (or monetary theory of production)<br />approach in order to study the mechanism of money creation when banks discriminate production on an ethical<br />plane. By the micro-foundation of the banks’ and firms’ behaviour, it will be shown that the ethical<br />discrimination of firms by banks is implemented by the differentiation of the mark-ups on the loan rate and how<br />this discrimination leads the system to create different credit markets according to the capacity (or willingness)<br />of firms to satisfy (or not) the ethical claims of the banks.</p>