Endogenous Money

Endogenous money references the money that's circulating the economy via transactions "naturally," as opposed to the money part of the money supply that's expanded or contracted by the central bank.

Post-Keynesian peeps see it like this: banks create loans out of thin air, the amount dependent on what the interest rates are at the time. Then the central bank helps out these banks with their reserve requirements as needed.

Makes sense, right? Well, not if you ask a neoclassical economist, who sees it the other way: that money comes from the central bank exogenously, which creates a multiplier effect in the economy, increasing the money supply that way.

In that sense, endogenous money is more a part of a theory than a real, tangible thing. You gotta pick your battles as an economist.