Proponents of modern monetary theory have come up with their own idiosyncratic definition of savings in support of their theory. But the common usage of the term shows MMT doesn't work the way its supporters think it does.
During June 2020, year-over-year (YOY) growth in the money supply was at 34.47 percent. That's up from May's rate of 29.5 percent, and up from June 2019's rate of 2.04 percent.
During May 2020, year-over-year (YOY) growth in the money supply was at 29.80 percent. That's up from April's rate of 21.3 percent, and up from May 2019's rate of 2.15 percent.
In this short essay recently found in the Mises Institute Archives, Mises goes over the basics of monetary theory and shows why the concept of velocity of circulation is useless for understanding changes in the purchasing power of the monetary unit.