Stabilising market expectations through a market tool: a proposal for an enhanced TPI

Abstract This paper puts forward a proposal to complete the ECB Transmission Protection Instrument (TPI) with the aim of making it more effective in anchoring the yields of European sovereign debts to Member States’ fundamentals. We use a model in which yields fluctuate within bands, which we specify following two alternative approaches: stochastic and deterministic. The resulting fluctuation's interval represents the range of yields that can be seen as justified by Member States’ fundamentals; yields outside the band would instead trigger the ECB intervention as foreseen by the TPI. The proposal minimizes the risk of moral hazard, as the fluctuation bands vary as each country's creditworthiness changes. Moreover, the proposal is directly implementable with existing Treaties.