While the markets have become obsessively focused on the date at which the Fed will start to taper its asset purchases, the Fed itself, in the shape of its senior economics staff, has been thinking deeply about what the stance of monetary policy should be after tapering has ended. This is reflected in two papers to be presented to the annual IMF research conference this week by William English and David Wilcox, who have been described as two of the most important macro-economists working for the FOMC at present. At the very least, these papers warn us what the FOMC will be hearing from their staff economists in forthcoming meetings.
Jan Hatzius of Goldman Sachs goes further, arguing that the papers would only have been published if their content had been broadly approved by both Chairman Ben Bernanke and by Janet Yellen. The new works take the Fed’s mainstream thinking into controversial areas which have certainly not been formally approved by the majority of the FOMC.
The English paper extends the conclusions of Janet Yellen’s “optimal control speeches” in 2012, which argued for pre-committing to keep short rates “lower-for-longer” than standard monetary rules would imply. The Wilcox paper dives into the murky waters of “endogenous supply”, whereby the Fed needs to act aggressively to prevent temporary damage to US supply potential from becoming permanent. The overall message implicitly seems to accept that tapering will happen broadly on schedule, but this is offset by super-dovishness on the forward path for short rates.
The papers are long and complex, and deserve to be read in full by anyone seriously interested in the Fed’s thought processes. They are, of course, full of caveats and they acknowledge that huge uncertainties are involved. But they seem to point to three main conclusions that are very important for investors.
1. They have moved on from the tapering decision
Both papers give a few nods in the direction of the tapering debate, but they are written with the unspoken assumption that the expansion of the balance sheet is no longer the main issue. I think we can conclude from this that they believe with a fairly high degree of certainty that the start and end dates for tapering will not be altered by more than a few months either way, and that the end point for the total size of the balance sheet is therefore also known fairly accurately. From now on, the key decision from their point of view is how long to delay the initial hike in short rates, and exactly how the central bank should pre-commit on this question. By omission, the details of tapering are revealed to be secondary.
2. They think that “optimal” monetary policy is very dovish indeed on the path for rates
Both papers conduct optimal control exercises of the Yellen-type. These involve using macro-economic models to derive the path for forward short rates that optimise the behaviour of inflation and unemployment in coming years. The message is familiar: the Fed should pre-commit today to keep short rates at zero for a much longer period than would be implied by normal Taylor Rules, even though inflation would temporarily exceed 2 per cent, and unemployment would drop below the structural rate. This induces the economy to recover more quickly now, since real expected short rates are reduced.
Compared to previously published simulations, the new ones in the English paper are even more dovish. They imply that the first hike in short rates should be in 2017, a year later than before. More interestingly, they experiment with various thresholds that could be used to persuade the markets that the Fed really, really will keep short rates at zero, even if the economy recovers and inflation exceeds target. They conclude that the best way of doing this may be to set an unemployment threshold at 5.5 per cent, which is 1 per cent lower than the threshold currently in place, since this would produce the best mix of inflation and unemployment in the next few years. Such a low unemployment threshold has not been contemplated in the market up to now.
3. They think aggressively easy monetary policy is needed to prevent permanent supply side deterioration
This theme has been mentioned briefly in previous Bernanke speeches, but the Wilcox paper elevates it to centre stage. The paper concludes that the level of potential output has been reduced by about 7 per cent in recent years, largely because the rate of productivity growth has fallen sharply. In normal circumstances, this would carry a hawkish message for monetary policy, because it significantly reduces the amount of spare capacity available in the economy in the near term.
However, the key is that Wilcox thinks that much of the loss in productive potential has been caused by (or is “endogenous to”) the weakness in demand. For example, the paper says that the low levels of capital investment would be reversed if demand were to recover more rapidly, as would part of the decline in the labour participation rate. In a reversal of Say’s Law, and also a reversal of most US macro-economic thinking since Friedman, demand creates its own supply.
This new belief in endogenous supply clearly reinforces the “lower for longer” case on short rates, since aggressively easy monetary policy would be more likely to lead to permanent gains in real output, with only temporary costs in higher inflation. Whether or not any of this analysis turns out to be justified in the long run, it is surely important that it is now being argued so strongly in an important piece of Fed research.
Conclusion
The implication of these papers is that these Fed economists have largely accepted in their own minds that tapering will take place sometime fairly soon, but that they simultaneously believe that rates should be held at zero until (say) 2017. They will clearly have a problem in convincing markets of this. After the events of the summer, bond traders have drawn the conclusion that tapering is a robust signal that higher interest rates are on the way.
The FOMC will need to work very hard indeed to convince the markets, through its new thresholds and public pronouncements, that tapering and forward short rates really do need to be divorced this time. It could be a long struggle.
Gavyn Davies
Fonte: FT
