Trust in ECB shapes inflation expectations from foreign debt
A Danmarks Nationalbank working paper finds that news of rising foreign public debt significantly increases German firms' inflation expectations. This effect is particularly pronounced among firms lacking trust in the European Central Bank and expecting accommodative monetary policy.
Fiscal discipline and central bank resolve
A Danmarks Nationalbank working paper finds that pessimistic news on the debt-to-GDP ratios of France, Italy, and Spain significantly elevates German firms' one- and three-year inflation expectations.
This effect is strongest among firms with low trust in the European Central Bank (ECB) to maintain price stability and those expecting low ECB policy rates.
No detectable impact was found on five-year inflation expectations, indicating long-run anchors remain.
The study, using a randomized information treatment with German firms, suggests debt news becomes inflationary when firms perceive incomplete fiscal backing for sovereign debt and anticipate central bank accommodation of fiscal pressures.
A major German debt-financed fiscal shock in March 2025 (e.g., a €500 billion infrastructure fund) generated no comparable upward revision in German firms' inflation expectations.
This supports the paper's argument that accommodation concerns are more prominent for fiscally fragile parts of the monetary union, not anchor countries.
The trust-fiscal dominance nexus
The study establishes a strong link between firms' trust in the ECB and their perception of fiscal dominance.
Roughly 44 percent of German firms report low trust in the ECB's price-stability mandate, correlating with a higher perceived likelihood of fiscal dominance.
This scenario implies the ECB might hesitate to raise rates due to government fiscal sustainability concerns.
The experiment exposed German firms to optimistic or pessimistic debt projections for France, Italy, and Spain, treated as a single block.
This foreign debt focus reflects the model's logic: fiscal accommodation concerns arise when debt pressures in fragile union parts might induce the central bank to tolerate higher inflation.
A Fisherian model distinguishes high-trust (fiscal policy fully backs debt) from low-trust environments (partially unfunded debt leading to inflation).
Trust as the ultimate anchor
This research offers crucial insight into the interplay of fiscal policy, central bank credibility, and inflation expectations in a monetary union.
It underscores that trust in the central bank is a tangible factor shaping economic agents' responses to fiscal news.
For policymakers, maintaining unwavering commitment to price stability, even amidst fiscal pressures, is paramount to anchoring expectations and preventing inflationary spirals.