The Black ZERO

I. Zero as Virtue

In 2014, Germany's finance minister Wolfgang Schäuble announced that the federal budget would manage without new debt for the first time since 1969. The "Schwarze Null" — the Black Zero — was born. Germany had, at long last, its finances under control. The media celebrated. The rating agencies nodded. Europe looked on with envy. The Swabian housewife, that mythical creature of the German budget debate, smiled contentedly.

What nobody celebrated — nobody, at least, who was heard — was the question of how the zero had been achieved. Not through higher revenues alone, not through a booming economy alone, but through the systematic omission of expenditures that would have been necessary. The Black Zero was not a sign of strength. It was a sign that someone had decided not to pay the bill — and hoped that the reminder would not arrive until they were out of office.

The reminder is arriving now.

II. The Physics of Neglect

Infrastructure has a property that politicians dislike: it obeys the laws of physics, not the laws of politics. Concrete ages. Steel fatigues. Asphalt cracks. Pipes corrode. Bridges have a lifespan, and this lifespan does not end when it is fiscally convenient but when material fatigue dictates.

The great wave of German infrastructure construction took place in the 1960s and 1970s. Motorways, bridges, sewerage systems, school buildings, hospitals, swimming pools, railway lines — in two decades the Federal Republic built the physical body of a modern industrial state. This body had a lifespan of forty to sixty years. The arithmetic was foreseeable: between 2010 and 2030, a renewal wave would be necessary, approaching in dimension the original construction.

Every civil engineer knew this. Every technical report stated it. It was as predictable as the sunrise. And at precisely the moment when the renewal wave should have begun, Germany decided to stop spending money.

III. The Bookkeeping of Decay

The Black Zero was a triumph of bookkeeping over economics. A bookkeeper asks: does the balance sheet tally at year's end? An economist asks: what is the state of the country in twenty years? Schäuble was not an economist. He was a bookkeeper with an ideology.

In any proper balance sheet there are depreciations — the loss in value of assets as they age. If a bridge loses value every year because it grows older and will eventually need replacement, then this loss is a cost, even if the bridge still stands today. In a company's balance sheet, this cost would be booked as a provision: money set aside to replace the bridge when the time comes.

The state knows no depreciations. The state knows only revenues and expenditures in the current fiscal year. If it does not repair a bridge, it saves money — this year. That the bridge will be more expensive to repair next year, will have to be closed the year after, and will have to be demolished and rebuilt in ten years, appears in no balance sheet. It is not an expenditure. Therefore it does not exist.

The Black Zero was, in business terms, a fraudulent balance sheet. It booked the omission of necessary investments as thrift. It confused consuming the substance with fiscal consolidation. It ate the seed corn and called it a good harvest.

IV. An Inventory of Decay

The figures are known. They have been published for years by institutes, by the KfW development bank, by the DIW economic institute, by engineering associations, by the Federal Highway Research Institute. No one can say they did not know.

The KfW puts the municipal investment backlog at over 186 billion euros — as of 2024, rising, rising every year, rising for ten years. Bridges: of the roughly 40,000 bridges in the trunk road network, thousands are in a condition requiring closure or weight restrictions. The Rahmedetalbrücke on the A45 — a structure from 1968, lifespan exhausted, exactly on schedule — had to be closed in 2021. Since then, heavy goods traffic drives through the town of Lüdenscheid. Schools: the KfW Municipal Panel puts the renovation backlog in school buildings alone at around 55 billion euros (2024) — by now it is almost 68 billion. Children learn in containers, in rooms with mould, in buildings whose windows no longer close. Railways: Deutsche Bahn operates a network that is, by European comparison, among the most unpunctual and fault-prone — the result of decades in which the return on Deutsche Bahn AG mattered more than the functionality of the network. Digitalisation: in fibre-optic provision, Germany ranks 35th among OECD countries — behind Latvia, Mexico, and Chile.

All of this was foreseeable. All of this was foreseen. All of this was ignored. Not out of ignorance but out of calculation: whoever defers the bill saves today and lets tomorrow pay. And tomorrow, someone else is responsible.

V. The Ideology Behind the Zero

The Black Zero was not merely bookkeeping. It was ideology. It rested on an article of faith that in Germany carries the force of a natural law: debt is bad.

This article of faith has a history. It comes from the hyperinflation of 1923, from the trauma of currency devaluation, from the fear of losing control that has burrowed deep into German economic thinking. It was reinforced by the reconstruction generation, which equated "freedom from debt" with "honour", and by an ordoliberal tradition that elevated the balanced budget to a moral imperative.

What this article of faith overlooks is the difference between consumption debt and investment debt. Whoever goes into debt to finance a holiday is living beyond their means. Whoever goes into debt to build a factory that generates returns for twenty years is investing. The Swabian housewife, so beloved as a metaphor, would not deny her children a roof over their heads on principle because she never takes out loans. But that is precisely what Germany did: it denied its children the roof and called it "sound fiscal policy".

The debt brake, enshrined in the constitution in 2009, cemented this ideology in constitutional law. It does not distinguish between good debt and bad debt. It does not distinguish between investments that pay off over decades and expenditures that evaporate. It knows only one number: structural new borrowing must not exceed 0.35 per cent of GDP. Whether bridges collapse, schools decay, and rails break in the process is not a matter for the constitution.

VI. The Winners of the Zero

Every political decision has winners and losers. The Black Zero had both — only the winners were loud and the losers mute.

Winners were those who regarded low taxes and low government spending as signs of economic reason — and who profited from them. The companies whose tax burden did not rise. The asset owners whose wealth grew amid low interest rates and a strong euro. The generation of decision-makers who knew they would not be the ones to pay the bill.

Losers were those who depended on functioning infrastructure — which is to say, everyone. The commuter stuck in traffic because the bridge is closed. The child sitting in a classroom with mould. The entrepreneur whose broadband connection is insufficient for a digital business model. The inventor whose funding was cut because there was no money — supposedly no money, since tax revenues were flowing freely, only they were not being invested.

The Black Zero was, viewed sociologically, a redistribution programme: from the future to the present, from the young to the old, from those who need the state to those who do not.

VII. The End of "Model Germany"

Germany understood itself for decades as a "model" — as proof that economic success, social security, and solid infrastructure were compatible. The Black Zero has destroyed this model from within.

A country that does not repair its bridges is not a model. A country that lets its schools decay is not a model. A country that cannot make its railways run is not a model. A country that sleeps through digitalisation is not a model. A country that does all of this in order to keep a number on a piece of paper clean has confused its priorities — and declared the confusion a virtue.

International perception has long since shifted. The Draghi Report of 2024 identifies the European investment gap as one of the core problems of competitiveness — and Germany accounts for a large part of it. International investors now look at German infrastructure with concern. Companies making location decisions weigh whether a country in which the approval of a building application takes longer than the construction itself is the right place for a future investment.

The Black Zero has not strengthened Germany. It has hollowed it out. From the outside the façade still looks solid. From the inside the plaster has fallen.

VIII. "Entirely Unforeseeable"

When at some point — and that point is not far off — a bridge collapses, a school building must be evacuated, a railway network ceases operation, or a city can no longer deliver its drinking water, the responsible officials will step before the cameras and say: "This was entirely unforeseeable."

They will be lying. Not out of malice but out of habit. For the claim of unforeseeability is the standard instrument of political avoidance of responsibility. The politician who calls a catastrophe "unforeseeable" is saying: I was not at fault. Nobody was at fault. It simply happened — like a natural event, like an earthquake, like a tsunami.

But the decay of infrastructure is not a natural event. It is the result of concrete decisions by concrete people. It is the result of budgets that deliberately provided no funds for renovation. Of finance ministers who cut investments to preserve the zero. Of parliamentarians who approved those budgets. Of voters who demanded "sound finances" without asking what was meant by it.

Unforeseeable? Every civil engineer could calculate the date. Every materials scientist knew the fatigue curve. Every hydrologist knew how long pipelines last. The data lay on the table. It still lies on the table. You just have to read it. But reading means acting, and acting costs money, and spending money endangers the zero.

So nobody reads.

IX. The Double Bill

The perfidious thing about deferred maintenance is that it does not merely become more expensive — it becomes exponentially more expensive. This is not hyperbole; it is materials science.

A bridge repaired in time costs a fraction of a bridge that must be demolished and rebuilt. A pipe renewed in time does not cause the flood that damages entire streets. A school building insulated in time saves heating costs for decades. Every euro invested in time saves three to five euros that must be invested later — and those are the conservative estimates.

The Black Zero did not save. It chose the most expensive of all options: do nothing and wait. It turned a plannable renewal that could have been spread over twenty years into a renovation emergency that now demands everything at once — with a construction sector that lacks capacity, with skilled workers who are missing, with prices driven skyward by simultaneous demand.

The generation that celebrated the Black Zero will not pay the bill. The generation that must pay it did not order it.

X. Oppenheimer's View of the Zero

Franz Oppenheimer would have recognised the Black Zero for what it is: a form of rent extraction. Not in the sense of retirement pensions but in the economic sense: the skimming of a value that is not skimmed by the one who created it.

The generation that built the infrastructure in the 1960s and 1970s built it for the future. The generation that should have financed the renewal in the 2010s and 2020s consumed the substance instead and sold the consumption as thrift. They used the infrastructure of their predecessors without renewing it — that is rent extraction in its purest form: living off an asset without maintaining it.

Oppenheimer's solution — the removal of monopoly — would here mean: the removal of the present's monopoly over the future. An investment obligation ensuring that every generation maintains the infrastructure it uses. State accounting that recognises depreciations and books the loss of substance as a liability — not as a saving. A debt brake that distinguishes between consumption and investment, because a state that does not repair its bridges in order to avoid debt is more bankrupt than a state that takes out a loan to repair them.

The Black Zero was black like the night into which it has led the country. The zero was what remains at the end when you do nothing for decades.

Entirely unforeseeable.