Monetary overhang is a phenomenon in which people have money holdings because of a lack of ability to spend them. This is a phenomenon often present with repressed inflation and was common in Centrally Planned Economies like the Soviet Union.
The Soviet Union experienced monetary overhang from the mid-1980s onwards. This was reported by the IMF in 1991. Subsequent to this report, the USSR collapsed.
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Monetary overhang Wikipedia(Text) CC BY-SA