Boromeus Wanengkirtyo, Ivan Yotzov and Mishel Ghassibe

Can tomorrow’s costs affect firm prices today? When a temporary tariff schedule on imported inputs was announced in March 2019, many UK firms adjusted prices in anticipation – despite the potential cost change being in the future. In a recent working paper, we use firm‑level survey data to estimate ‘intertemporal pass‑through’ (IPT): how much expected future marginal costs move current prices. Consistent with modern macroeconomic theory, we find big differences across firms: those that change prices less often, and expect the shock sooner, responded the most. A model shows this variation across firms makes aggregate inflation more forward‑looking, so announcements of future policies can move inflation today.
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