ECB Working Paper Finds Household Heterogeneity Drives Sectoral Fiscal Spillovers in Open Economies

Key Takeaways

• This ECB working paper (No 3279) uses a two-sector open-economy HANK model to show that government spending concentrated in services also lifts goods-sector output, mainly because constrained households spend additional income.
• It is academic research, not binding regulation, and carries an explicit disclaimer that it does not represent ECB views.
• Compliance teams should treat it as background context for macro scenario design and not as a source of new obligations.

Deep Dive

This ECB working paper (No 3279) uses a two-sector open-economy HANK model to show that government spending concentrated in services also lifts goods-sector output, mainly because constrained households spend additional income. It is academic research, not binding regulation, and carries an explicit disclaimer that it does not represent ECB views. Compliance teams should treat it as background context for macro scenario design and not as a source of new obligations.

The paper's findings are still relevant to risk and stress-testing functions. Using a Structural Bayesian VAR on US data (1954Q1 to 2019Q4), the authors document four patterns after a government spending increase: output rises in both goods and services, private consumption rises in both with a larger response in goods, goods prices fall relative to services, and net exports deteriorate. A representative-agent model fails to reproduce these patterns. The HANK model, with uninsurable income risk, imperfect labor mobility across sectors, and import prices that include domestic distribution costs, replicates all four. Sectoral multipliers depend on household heterogeneity and trade openness, and more open economies see smaller domestic output gains because more demand leaks abroad. The authors also note that linearization may overstate consumption responses, but argue this is limited for their experiment.

The study has important limits. It is calibrated to US data and a relatively closed economy, and the shocks are unanticipated, so results may not transfer directly to EU member states or to anticipated fiscal packages. The sample excludes the COVID-19 period. The text provided is also truncated before the full calibration and sensitivity results, so conclusions here rest on the abstract, summary, and early sections. No timelines or deadlines are specified.

Recommended actions are modest. Share the paper with economics, stress-testing, and ICAAP/ILAAP scenario teams as context on fiscal transmission across sectors. Consider whether macro scenarios that assume fiscal expansion affects only the targeted sector understate spillovers to consumer goods, retail, and trade-exposed borrowers. Monitor whether the findings later appear in formal ECB or EBA scenario design or supervisory communications. Keep a record that the paper was reviewed and found non-binding.

Risk impact is low and indirect. The main exposures are model risk and scenario-design quality, with possible secondary effects on credit risk assessments for sectors sensitive to fiscal policy and trade openness.

Source: European Central Bank