The Chiemgauer explained – is it a viable solution?

The Chiemgauer is a local demurrage currency launched in 2003 in the Chiemgau region of Bavaria, Germany. It was started as a Waldorf school project by economics teacher Christian Gelleri and his students. The idea was simple but radical: create a money that loses value if you don’t spend it, so that people are encouraged to shop locally rather than hoard cash. In practice, one Chiemgauer is always worth one euro, but Chiemgauer notes and vouchers must be “stamped” (a kind of tax) every three months or they expire. This built-in depreciation (about 2% per quarter, or roughly 8% per year) is known as a demurrage or “carrying cost” on holding money. For example, local banks charge 2% every quarter to renew a Chiemgauer note. Users say the fee is small and worth it to support the community. 

Key features of the Chiemgauer include:

Local peg

The currency is reserve-backed (1 Chiemgauer = 1 €) and can be bought at participating banks or businesses. Consumers exchange euros for Chiemgauer, keeping the value stable.  

Charity donation

When converting euros to Chiemgauer, 3% of the amount is earmarked for a local non-profit of the buyer’s choice. This means spending 100 Chiemgauer effectively donates 3 € to charity, at no extra cost to the consumer (the cost is paid by the businesses). 

Demurrage (spending incentive)

Every three months, holders must buy a “stamp” worth 2% of the note’s face value to extend its validity. If unrenewed, the note simply becomes worthless. This encourages rapid circulation: analysts estimate Chiemgauer notes change hands about 2.5 times faster than euros.  

Business fees

Participating shops pay a one-time registration fee and a modest monthly charge, and they pay a 5% commission to convert Chiemgauer back into euros. This fee discourages large retailers from joining (since they have little reason to spend Chiemgauer, given the cost). In practice, the network consists almost entirely of small, local stores and co‑ops. 

These rules mean the Chiemgauer cannot be easily saved or exported – it must be spent within the local economy or returned at a penalty to the issuing banks. It is issued in both paper vouchers and electronic form (there is even a Chiemgauer debit card).  

Growth and scale

Since its humble start, the Chiemgauer has grown substantially – albeit within its region. In the first year (2003) it circulated only about €75,000, with ~100 participants. By the end of 2010, turnover had reached about €5.1 million, with over 600 businesses on board and roughly 2,500 regular users. A 2021 study reported that by late 2015 some 561 shops and farms accepted Chiemgauer, and about 3,100 consumers were actively using it. In absolute terms this is still very small – €5 million is just ~0.2% of the Chiemgau region’s GDP. But growth has been steady: by the mid-2010s there were about 504 participating businesses, 26 exchange offices, and roughly 4,000 consumers in the system. For context, about 716,502 Chiemgauers were reported in circulation at one point.  

Economists have studied the impact of these figures. The Chiemgauer now regularly channels millions of euros worth of local spending each year. In 2015, for example, around €2.36 million were converted from euros into Chiemgauer, and goods worth €7.6 million were purchased in Chiemgauer at local stores. Charitable contributions via the scheme exceeded €65,000 in that year alone. Surveys suggest local businesses benefit: they draw customers who specifically want to “keep money local,” and many stores report higher sales of community-produced goods. 

Why a “rusting” currency?

The idea of money that deliberately loses value comes from German economist Silvio Gesell (1862–1930). Gesell argued that money should circulate like potatoes – rotting if hoarded – so that no one gains by just sitting on cash. In modern terms, demurrage acts like a negative interest rate on cash holdings. By forcing people to spend or donate, demurrage raises the velocity of money. Theories predict (and real cases suggest) demurrage currencies can stimulate trade and work as a modest anti-crisis measure when people hoard currency.  

Historically, similar “stamp scrip” schemes appeared during the Great Depression (like the famous Wörgl experiment in Austria) and famously accelerated circulation. In the Chiemgauer, this effect is visible: each Chiemgauer bill typically circulates several times before its fees wipe out its value.  

Because it is always convertible to euros (albeit with a fee), the Chiemgauer remains firmly complementary to the official currency. Its proponents insist it is a local supplement rather than a threat. Indeed, founder Gelleri has explicitly said it complements the euro, rather than replacing it.  

Benefits and Limitations

Supporters cite several advantages. By channeling spending into local businesses, the Chiemgauer keeps money circulating within the community instead of leaking out to national chains. The 3% charity component means every transaction benefits a nonprofit, which has raised over €100,000 for local causes to date. The demurrage discourages hoarding and accelerates the spending of currency into the real economy. In fact, one study estimates Chiemgauer notes circulate about 2.5× faster than the euro. Economists also note that since the currency effectively has a “negative interest rate,” it can subsidise borrowing: banks providing loans in Chiemgauer pay the carrying cost, so businesses can borrow at roughly zero nominal interest in the local currency. 

Limitations

Critics point out practical limitations. The currency is only accepted in a few hundred outlets, and it cannot be used outside the region. Users must find a business willing to take it, and businesses must find suppliers (often stuck using euros) before converting back. The 5% conversion fee is also a disincentive: large retailers, which rely on global supply chains, simply opt out. As Keynes noted long ago, stamped-money schemes can fail if people prefer easily-spendable alternatives. In practice, demand for Chiemgauer is voluntary, so it has not achieved “critical mass” beyond its niche. Even after nearly two decades, total circulation is measured in the low millions, a tiny fraction of the overall economy. Surveyed businesses sometimes complain it’s a hassle to keep extra cash on hand (“stocking up” at quarter-end) if they can’t spend enough within the network.  

Finally, there is the question of why people need such a currency today. With digital banking and low interest rates, mainstream money already carries a negative real cost in some contexts. Central banks grapple with how to prevent hoarding in a low-rate world (some have floated ideas like tokens that depreciate). However, national money remains a legal tender with broad acceptance, which demurrage money cannot match. 

Demurrage vs. mainstream money

Compared to modern national currencies, the Chiemgauer’s design is almost the inverse of a typical interest-bearing currency.  While most central banks use positive interest rates (and let currency hold value) to control inflation, the Chiemgauer intentionally erodes its own value. This makes it unsuitable as a store of wealth but effective as a local medium of exchange. Studies show regional currencies with demurrage tend to have much higher “velocity” (speed of turnover) than normal money. In times of deflation or recession, this can keep trade alive: people cannot wait for prices to fall because the money itself is melting.  For example, in Wörgl (1932) and other “stamp scrip” cases, unemployment fell sharply as local projects paid workers in the currency. By contrast, in a growing economy with positive interest, most people prefer a national currency that earns something or holds value. 

Other experiments hint at different trade-offs. The Swiss WIR mutual-credit system (1930s–today) is another local currency variant: it pays negative interest only on reserves held with the WIR Bank, effectively encouraging spending in business-to-business networks. The Chiemgauer is simpler (no bank loans, just vouchers and accounts). Bitcoin and crypto currencies, by contrast, are designed to be scarce and appreciate in value. The invention of smart contracts has allowed certain coins to implement pre-programmed ‘tokenomics’, but as of 2026 none uses a true demurrage system at scale. 

Is it a viable solution?

The Chiemgauer has proven viable as a local currency experiment, though perhaps not in the sense of replacing national money. It has kept thousands of euros circulating in Bavarian shops that might otherwise have gone to big chains. It has funded projects and charities, and it has raised awareness about the purpose of money. In that sense, it meets its goals of bolstering the regional economy and building community. Its multi-year track record and steady user base suggest the model is sustainable at least at this scale. 

However, its scope remains limited. Even its biggest advocates admit the currency touches only a tiny slice of the economy: by some estimates Chiemgauer circulation is far below 1% of local GDP. Its complexity (demurrage stamps, registration) and local niche mean it probably won’t “go viral” nationally. Gelleri himself sees it as complementary to the euro, not a replacement.  

For readers wondering about modern relevance: the Chiemgauer offers a real-world case study of how demurrage could work, at least on a small scale. It suggests that negative interest on money can boost spending and community investment, but also underscores why central banks have shied away from it: once people can use other currencies freely, imposed carrying costs can backfire (as Keynes warned). 

A local alternative for the modern age?

The Chiemgauer is viable as a targeted local tool, especially in times of economic stress. It has revived some hometown commerce in rural Bavaria and shown that money “rots” can have value. But it is unlikely to become a mainstream solution without major institutional shifts. Its success lies in rethinking money’s purpose – paying people and fostering trust – rather than aiming for wide circulation. In the current system, the Chiemgauer complements the euro by doing what the euro itself is too mainstream to do: provide a small, expiring nudge to spend locally.