Are bond markets signaling default or high inflation ahead?
Core argument: The US break-even inflation rate, the gap between yields on index-linked and conventional debt of the same maturity, stands around 2.3%, barely above its 2.1% average since January 2003, suggesting market confidence that inflation targets will be hit over a decade.
Markets in safe assets are not screaming “default is nigh”. Nor, for that matter, are they screaming “hyperinflation (even high inflation) is nigh”. The simple way of looking at the latter is in terms of “break-even” inflation rates, which are the gaps between yields on index-linked and conventional debt of the same maturity. In the US, this spread is around 2.3%, which is barely above the average of 2.1% since January 2003. Markets seem strikingly confident that inflation targets will be hit over a 10-year period. Even a normalisation of interest rates after such a long period of ultra-low rates might prove too much for [equity valuations to absorb]. One obvious point here concerns the “equity risk premium”. A way of measuring this is by the gap between the cyclically-adjusted earning yield on US equities (the inverse of the “cyclically adjusted price/earnings ratio”) and the real interest rate. The last time the gap (which indicates expected excess long-term return on equities over Tips) was as low as it is right now was in June 2007. That is hardly a comforting thought.

