WEIMAR GERMANY 1921–1923

Weimar Germany’s 1923 Hyperinflation: What Actually Ended It

FIELD REPORT

“This chart shows how insane the inflation was. A college professor said his salary was 10,000 marks paid once a month; two years later it was 10 million marks paid twice a day.” — u/sonofabutch, r/Damnthatsinteresting, 2024-12-22, 11,728 upvotes

A thousand-fold raise in two years. Paid twice a day, because once wasn’t fast enough. That’s the number under every wheelbarrow photo from Weimar Germany. Search weimar hyperinflation money supply and you’ll find plenty of those photos. You won’t find our chart. This episode is one of ten in our hyperinflation examples hub. Three of the ten carry our own money-supply series. This isn’t one of them. Our own data starts in 1960 — thirty-seven years after this collapse ended. Everything below is sourced externally and cited by name.

Weimar Germany’s hyperinflation peaked in October 1923. The monthly inflation rate hit 29,500%, doubling prices every 3.7 days (Hanke & Krus, 2012). By November, one US dollar bought 4.2 trillion marks. The Rentenmark, introduced November 15, 1923, ended it within weeks. It worked by cutting off the Reichsbank’s financing of the deficit.

The peak, in the numbers historians actually cite

Phillip Cagan set the working definition in 1956. A currency is in hyperinflation once monthly price growth clears 50%. Later work still runs on the Cagan definition (50% per month). Hanke & Krus (2012) add one condition: the rate has to hold for at least 30 consecutive days. Weimar Germany was one of Cagan’s original seven cases.

Hanke & Krus (2012) later rebuilt the peak-month rate. October 1923: 29,500% in a single month. Prices doubled roughly every 3.7 days. That clears Cagan’s line by about 590 times over — 29,500 divided by 50. This wasn’t a currency brushing against the threshold. It blew past it.

By November 1923 the collapse had run past that peak and kept compounding. One US dollar bought 4.2 trillion marks that month. A 65,034-upvote Reddit post still opens with that same figure today (u/StarredTonight, r/Damnthatsinteresting, 2024-12-22).

Set against the rest of this batch, Weimar’s peak looks almost mild. Hungary 1946 pengő still holds the outright hyperinflation record, at a rate roughly 1.4 trillion times faster (see our Hungary page). Zimbabwe’s November 2008 peak, 79.6 billion percent a month (Hanke & Kwok, 2009), ran about 2.7 million times faster — $100 trillion note and all. Yugoslavia 1994 and Venezuela 2016–2019 both cleared Cagan’s line too, each by a very different path. Weimar’s 29,500% is the smallest of the four peaks in that chart — and it still cleared the threshold 590 times over.

Why we hold no chart for this one

Our own broad-money series is sourced from the IMF’s MFS_MA/BM_MAI. It starts in 1960 for every country we track — see the full method. Weimar’s collapse ran August 1922 to November 1923. That’s thirty-seven years before our earliest observation, anywhere in the dataset. We hold no money supply chart for this one, and we won’t build one; the gap predates the dataset entirely, not just our copy of it.

The question that thread never got answered

Same comment thread, ranked second by upvotes:

FIELD REPORT

“How does a country reverse hyperinflation??” — u/SAL10000, r/Damnthatsinteresting, 2024-12-22, 2,070 upvotes

It sits under the professor’s story, unanswered. Weimar Germany answered it in three weeks.

On November 15, 1923, Germany introduced a new currency: the Rentenmark. The rate was fixed — one Rentenmark to one trillion old papermarks. It wasn’t backed by gold. There wasn’t enough left. It was backed by a mortgage bond, a Grundschuld, on German farmland and industrial property, nominally valued at 3.2 billion Rentenmarks. Hjalmar Schacht made the second half of the fix. He was named currency commissioner that same month, and Reichsbank president the next. Under Schacht, the Reichsbank stopped discounting government treasury bills. That cut off the mechanism turning government deficits directly into new currency — a currency redenomination alone would never have done that. The new mark was pegged at 4.2 to the US dollar, the same digits the collapsed currency had just failed on. The Dawes Plan followed in 1924, restructuring Germany’s reparations schedule and giving the stabilisation external credit to lean on.

Zimbabwe used dollarization in 2009 to stop its own currency collapse — a different mechanism, decades later. We chart three episodes that ended start to finish, each in a different way. See how hyperinflation actually ends for the comparison. Weimar’s land-backed currency plus a hard stop on deficit discounting is a fourth, distinct pattern next to those three.

What Weimar does not prove about modern QE

A recurring argument in our own community research treats Weimar as the template for what any central-bank money creation eventually does. u/peruvian_bull’s 9,308-upvote r/Superstonk essay (2021-06-21) walks from the Weimar mark straight to the Federal Reserve’s post-2008 balance sheet, framing both as the same mechanism. They aren’t the same mechanism. The Reichsbank discounted government paper directly. It printed currency to hand the state cash it hadn’t taxed or borrowed for. Post-2008 quantitative easing bought government bonds already sold to banks in the open market. That credits bank reserves. It doesn’t fund new deficit spending at the point of issuance. Reserves sitting at a central bank and currency chasing a shrinking supply of goods both look like a bigger monetary base on a chart. They are not the same event underneath it. We hold no US price-inflation series either way, so we won’t push the comparison further than the mechanism itself.

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