This paper studies the determinants of interest rate spreads of euro area 10 year government bonds against the benchmark, the German bund, after the introduction of the euro. In particular, it pays attention to the question whether market discipline is advanced or obstructed by financial integration and by fiscal rules like the Stability and Growth Pact. We first argue that financial integration u2013 by improving market efficiency u2013 is instrumental for markets to exert their disciplinary role. Next, we discuss the relationships between market discipline and fiscal rules, arguing that these in principle may reinforce each other. Finally, we provide strong empirical evidence that spreads depend on the ratings of the underlying bond and to a large extent are driven by the level of short-term interest rates.
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