Monetary tightening without disinflation: a post-Keynesian account of cost-push pressures, mark-up dynamics, and conflict inflation
摘要
This paper examines why sustained monetary tightening can coexist with slow disinflation and persistent inflationary pressures. Focusing on a balanced Euro Area panel over 2001Q1–2024Q4, the analysis develops and tests a post-Keynesian explanation centered on administered pricing, endogenous mark-up setting, and distributional conflict. In contrast to demand-driven Phillips-curve interpretations, inflation is modeled as the outcome of cost propagation, profit-claim dynamics, and monetary policy operating through both demand and costs. Using a panel error-correction framework, the empirical results indicate that energy and import prices are the dominant correlates of inflation, while profit-share measures remain statistically relevant after controlling for costs. The policy interest rate plays a limited direct role in anchoring inflation in the long run. Moreover, a regime-based interaction shows that during sustained tightening cycles, policy-rate increases are associated with weaker disinflation dynamics and, in the short run, mildly inflationary effects once cost and mark-up channels are taken into account. These findings are interpreted as conditional associations consistent with administered pricing and distributional conflict, rather than as causal proof of a standalone cost channel. The results suggest that when inflation is predominantly cost- and conflict-driven, effective stabilization requires complementary policy tools beyond interest-rate hikes.