Now to be sure, I fully agree that the economic environment varies greatly between the north-eastern Eurozone area and the periphery (and will continue to do so for some years) with the periphery needing lower rates than the north-east. However, I am also convinced that given the Eurozone debt crisis, the repo rate has lost in importance for the fiscally weak peripheral countries (or to put it differently: the monetary transmission mechanism in the periphery is impaired). The relationship between the repo rate and peripheral bond yields has weakened dramatically ever since the Eurozone sovereign debt crisis started. The effect of a higher repo rate does therefore not need to translate into higher funding costs which add to cyclical economic weakness. The chart below shows the rolling regression coefficient of changes in 10y bond yields ono changes in the 6x9m EONIA forward rate (over 120 business days). There is a relatively stable relationship between changes in the EONIA forward rate and changes in the 10y Bund yield (with changes in the EONIA forward rate being mirrored almost 1:1 by 10y Bund yields). The R2 value is around 75% (i.e. around 75% of the changes in 10y Bund yields are explained by changes in the EONIA forward rate).
Reduced repo rate iimportance: regression of 10y yields on 6x9m Eonia forward
For peripheral bond yields, this is not the case. Since the outbreak of the Greek crisis in spring 2010, the correlation between changes in the EONIA forward rate and 10y Portuguese, Spanish and Italian yields moved into negative territory (i.e. higher peripheral yields went hand in hand with a lower EONIA rate and vice versa). However, regression coefficients have statistically not been different from zero and R2 values have been below 1%. Hence, statistically, peripheral bond yields are currently not dependent on changes in the EONIA forward rate (and with that on ECB rate action). This assessment is being confirmed by the developments over the past weeks. While 10y Bund yields rose by approx. 20bp since the last ECB meeting at the beginning of March (when the ECB prepared the market for a rate hike), 10y BTP and 10y Bono yields are slightly lower by around 5bp. On the other side, Portuguese yields rose sharply amid the political crisis and expectations that Portugal will have to apply for a bail-out soon. Hence, fundamental credit developments seem to be the main driver of peripheral bond yields and not the ECB repo rate!
With respect to the Irish and Greek sovereign, the ECB repo rate is even of much less importance. The bond market currently remains shut for these two countries (with Greece only performing some bill issuance) and they fund themselves via the IMF/EU/EFSF at pre-defined interest rates. Changes in the ECB repo rate have no meaningful effect on the interest expense of these countries. In fact, Greece could recently negotiate a reduction in the interest rate it gets charged on the bail-out loans and Ireland tries to achieve the same. For these two countries, the interest rate they have to pay are therefore a function of politics and not of the ECB repo rate.
For Eurozone banks, a repo rate rise will mean a higher funding cost. While the strong banks can easily withstand a higher funding cost, for the weak Eurozone banks the most important issue is to get access to enough liquidity with the price being is of secondary importance. And here the ECB seems willing to keep liquidity provision ample. As long as this remains the case, the effects on the banks should be low.
For households, credit on new loans will become more expensive but that is wanted for households in the north-east. For households in the periphery, the volume of new loans has been low anyhow and as a result the slowing effect via this channel should prove fairly limited. The larger problem might be that a significant amount of outstanding mortgage loans in Ireland, Spain and Portugal are variable rate loans (linked to Euribor). Given the rise in Euribor rates, this will at the margin negatively affect consumption.
Overall, given that Ireland and Greece currently do not fund themselves in the bond markets and credit fundamentals are more important for the bond yields of the other peripheral countries than the level of the repo rate whereas for the weak banks it is more important that they continue to have access to enough liquidity than the price they pay for this liquidity, the effects of a higher repo rate on the economically weak peripheral countries should be very limited. Only households relying on variable rate mortgages will see a drop in their real spending power. For the north-eastern Eurozone countries the effects of a higher ECB repo rate should have more direct consequences (albeit the level of rates remains very accommodative) given that here the monetary transmission mechanism is working much better. Overall, I previously stated that fundamentally a higher repo rate is warranted (amid the level of real growth, inflation but also given improving monetary developments) and I do not see strong reasons why it should constitute a policy mistake.