Additionality: the €500bn question Germany cannot answer

The Hagen–Wuppertal–Köln corridor is closed for five months; during this time 81 kilometres of rail and 12 train stations are modernised.[1] The German rail network is struggling and this project is long overdue. The money to finance this is coming from the €18.8bn SVIK for rail in 2026.[2] The same year, the government cut its core rail budget by €8.2bn.[2] The numbers show what the government spent. They cannot show whether it was additional.

The same fund is almost entirely additional by the government’s measure and almost not at all by its critics’. The deciding difference is the baseline. Additionality is always a claim about a world that did not happen; the law that created this fund did not fix a baseline to settle whether it is additional.

The Sondervermögen Infrastruktur und Klimaneutralität (SVIK) is a €500bn credit-financed special fund created in March 2025. It is off-budget, bypassing the debt brake, the constitutional limit on government borrowing, through article 143h GG, with the purpose of furthering infrastructure and climate investment.[3] The Basic Law requires that the investment be “zusätzlich” (additional), not a substitute for ordinary budget investment.[4] Additionality is conditional on core-budget investment staying above 10% of federal spending; this is measured on the budget plan.[4] On 1 June the German government published its first SVIK monitoring report claiming a strong start.[5] The report counts what was spent. It cannot show what was added.

Rail is not the only place fund spending coincides with a core-budget cut. Rail is the best case for the government: money did flow. The core budget was still cut. The fund includes €2.5bn for autobahn bridges in 2026.[2] Over the same period the federal road budget fell by €1.7bn.[2] The same pattern appears in broadband and hospital investment.[2] In 2025 the government borrowed €24.3bn through the fund. Total federal investment rose only €1.3bn against 2024.[6] ifo holds 2024 flat, and almost none of that borrowing became new investment.

The government's April analysis puts additionality at about 95%.[7] ifo puts it near 5%.[6] The government's council of economic advisers reaches the same verdict: less than half the fund is additional through 2030.[8] ifo compares the fund against 2024 held flat. The government compares it to a hypothetical: had the previous coalition stayed in power, its unfunded consolidation would have forced spending cuts and a fall in investment. The government assumes that 40% of that hypothetical consolidation would have fallen on investment.[7] That single assumption produces the 95% figure. The budget shows the offset between budget cuts and SVIK investment. This can be read as substitution or rescue, depending entirely on the baseline. The same hypothetical that justifies the cuts produces the 95%. Additionality is a claim about a world that did not happen; whoever picks that world picks the number.

The law's only enforceable test of additionality is the 10% quota.[4] This rule measures the planned budget, not actual spending. The quota also excludes the fund itself. Moving spending from the core budget to the SVIK removes it from the calculation entirely, making it invisible to the ratio. The 2026 budget clears the quota at 10.5%.[9] It is the same budget that put €18.8bn of rail investment into the fund while cutting the core rail budget by €8.2bn.

The BMF has called its own additionality clause "unzureichend ambitioniert," conceding the rule is too weak.[7] Jens Südekum, personal adviser to finance minister Lars Klingbeil, says "money is no longer the main constraint."[10] The government has moved from how much the fund adds to how fast it spends.

The constitution was specifically altered to create this fund, and it makes additionality the condition for the exception. On ifo's read, the government borrowed €24.3bn in 2025 and only €1.3bn reached new investment, a gap of roughly €23bn.[6] The debt is real whether or not the investment was additional. Germany is carrying the borrowing for certain. The additionality cannot be confirmed.

The government’s report that claimed a strong start measured spending, not additionality. The disbursement is real. The additionality the fund was built to deliver, and the constitution amended to require, the report cannot show. Only the fund's twelve-year life can show a real baseline. If the core budget keeps shrinking as the fund grows, the money was substitution. If the core budget holds while the fund adds on top, the money was additional. Fiscal additionality claims are counterfactuals disguised as data points. They make an argument about a world that did not happen, dressed as a fact about this one.

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Notes

[1] Deutsche Bahn, "Korridorsanierung Hagen–Wuppertal–Köln: Baumaßnahmen," 2026.

[2] IW Köln, "Bundeshaushalt 2026: Wie Schwarz-Rot mit dem Sondervermögen Haushaltslöcher stopft," IW-Kurzbericht 81/2025, 13 September 2025.

[3] Bundesrepublik Deutschland, "Artikel 143h Grundgesetz," Grundgesetz für die Bundesrepublik Deutschland.

[4] Deutscher Bundestag, "Entwurf eines Gesetzes zur Errichtung eines Sondervermögens Infrastruktur und Klimaneutralität (SVIKG)," Drucksache 21/779, 7 July 2025.

[5] Bundesministerium der Finanzen, "Monitoringbericht zum Sondervermögen Infrastruktur und Klimaneutralität," 1 June 2026.

[6] ifo Institut, "Monitoring der Investitionen des Bundes: Werden zusätzliche Schulden auch für zusätzliche Investitionen verwendet?," 17 March 2026.

[7] Bundesministerium der Finanzen, "Zusätzlichkeit der Investitionen des Bundes aus dem SVIK aus finanzpolitischer Sicht," Kapitel 2, April 2026.

[8] Sachverständigenrat zur Begutachtung der gesamtwirtschaftlichen Entwicklung, "Jahresgutachten 2025/26," Kapitel 2, November 2025.

[9] Bundesministerium der Finanzen, "Sollbericht 2026: Bundeshaushalt, KTF und SVIK," February 2026.

[10] Financial Times, "Germany’s €100bn bid to make the trains run on time," 10 June 2026.

Image credit: Fionn Große, Unsplash

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Continental is a biweekly column on European economics by Felix Schmidt. New issues appear on Substack first and on the International Economics Post within 48 hours.