Chiemgauer is a regional local currency started in 2003 in Prien am Chiemsee, Bavaria, Germany.

[2] In 2003, Christian Gelleri, a high school teacher, started this project with his students, who are in charge of designing and printing vouchers and take care of administration, accounting, advertising, and other tasks.

This system, called demurrage, is a form of currency circulation tax invented by Silvio Gesell.

[8] Specifically: ...in order to prevent this complementary currency from degenerating into a means of hoarding and to confer it on high liquidity.

It is required to put a stamp of 2% of the face value (€0.10 for 5 Chiemgauer, for instance) every three months to keep it valid, obliging its bearers to give up hoarding this complementary currency and to spend it as soon as possible and stimulating consequently the regional economy.