In the previous chapters we have not explicitly considered issues of money,credit and interest. We just assumed that, in a monetary productioneconomy, capitalists have access to credit in order to finance investment.Therefore, aggregate saving is not a financing constraint for aggregateinvestment, but adjusts to the latter through income growth and changesin functional income distribution in the Kaldor–Robinson model, and incapacity utilization in the Kaleckian models. In this chapter we will nowexplicitly integrate monetary issues into the post- Kaleckian model.