This is from cnbc.com:
Talk of further monetary stimulus from the Bank of Japan helped push the yen to a six-month low and lifted the Nikkei to a six-month high on Tuesday, and the move in Japanese assets may have further to run, analysts say.
Comments made by Bank of Japan (BOJ) governor Haruhiko Kuroda on Monday fueled speculation of further easing, after he told participants at a conference “we are ready to adjust monetary policy without hesitation if risks materialize.”
Is forward guidance important? Yes, it is tremendously important – particularly is you have little credibility about your monetary policy target. The Bank of Japan for 15 years failed to meet any monetary policy target, but since Haruhiko Kuroda became BoJ governor things have changed. His masterful forward guidance has significantly increased monetary policy credibility in Japan.
Few in the market place today can doubt that governor Kuroda is committed to meeting his 2% inflation target and that he will do whatever it takes to hit that target. Furthermore, when Kuroda says that he is “ready to adjust monetary policy without hesitation if risks materialize” he is effectively making the the Sumner Critique official policy.
Said in another way – governor Kuroda will adjust his asset purchases – if necessary – to offset any other shocks to aggregate demand (or rather money-velocity) for example in response to the planned increase in Japanese sales taxes.
As a consequence of Kuroda’s forward guidance market participants know that the BoJ will offset any effect on aggregate demand of the higher sales tax and as a consequence the expected (net) impact of the sales tax increase is zero. This of course is the Sumner Critique – an inflation targeting (or NGDP targeting) central bank will offset fiscal shocks to ensure that the fiscal multiplier is zero.
So what is happening is that market participants expect monetary easing in reaction to fiscal tightening – this is now lifting Japanese equity prices and weakening the yen. This will boost private consumption, investment and exports and thereby offset the impact on aggregate demand from the increase in sales taxes.
The Bank of Japan likely have to step up its monthly asset purchases to offset the impact of the higher sales taxes as the BoJ’s inflation target is still not fully credible. However, given Mr. Kuroda’s skillful forward guidance the BoJ will have to do a lot less in terms of an actually increase in asset purchases than otherwise would have been the case. That in my view demonstrates the importance of forward guidance.
My expectation certainly is that the plan sales tax increase in Japan will once again demonstrate that the fiscal multiplier is zero under credible inflation targeting (also that the Zero Lower Bound!) and there is in my view good reason to think that the Japanese economy will continue to recover in 2014 – to a large extent thanks to governor Kuroda’s skillful forward guidance and his commitment to hitting the BoJ’s inflation target.