What the study found
The study finds a non-monotonic, inverted-U relationship between financial development and economic growth. Financial development helps growth at first, but beyond a point it can slow technological progress because of congestion in innovation markets.
Why the authors say this matters
The authors conclude that the growth-finance relationship is shaped by both a positive finance channel and a negative congestion channel. They also suggest that excessive financial development can slow technological progress.
What the researchers tested
The researchers studied an endogenous growth model, meaning a model in which growth is determined within the economy rather than taken as given. The model includes search frictions, which are difficulties in matching firms with credit and innovation opportunities, and congestion effects in credit and innovation markets.
What worked and what didn't
The interaction of the two frictions generated a hump-shaped pattern between financial development and growth. The positive effect from easier access to funding was offset by a negative congestion effect as more firms entered research and development competition for scarce innovation resources. The mechanism remained robust when firm heterogeneity was added, and a calibration close to the U.S. economy gave a negative but quantitatively small effect of finance on growth.
What to keep in mind
The abstract reports results from a model and a calibration close to the U.S. economy, so the findings are not presented as a direct empirical estimate. The available summary does not describe additional limitations beyond the model setting.
Key points
- The study finds an inverted-U relationship between financial development and growth.
- Financial development has a positive funding effect and a negative congestion effect.
- Greater financial activity can draw more firms into research and development competition for scarce innovation resources.
- The mechanism remains robust when firm heterogeneity is allowed.
- In a calibration close to the U.S. economy, the finance-growth effect is negative but small.
Disclosure
- Research title:
- Finance and growth show an inverted-U relationship
- Authors:
- Daria Finocchiaro, Philippe Weil
- Institutions:
- Centre for Economic Policy Research, Centre for Economic Policy Research, Swedish National Bank, Université Libre de Bruxelles
- Publication date:
- 2026-03-11
- OpenAlex record:
- View
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