Skip to main content

Identifying the Effect of Bank of Japan's Liquidity Provision on the Year-End Premium:

A Structural Approach

December 2009
Yasuo Hirose*1
Shinsuke Ohyama*2
Ken Taniguchi*3

Click on wp09e06.pdf to download the full text.


To what extent did the Bank of Japan's liquidity provisions reduce the premium on money market rates over the year-ends in Japan? To answer this question, we propose a simple structural model that illustrates the year-end operations and the year-end interbank money markets. Based on the structural model, we identify the effects of the year-end operations as differences between the actual premium in the year-end money market and the counterfactual premium without the operations, and decompose the effects into two factors: the amount of liquidity supplied and the steepness of the banks' liquidity demand curve. We find that the operations over the year-end and the fiscal year-end of 2008 had the largest effects among those from 2006 to 2008, reflecting the fact that the Bank of Japan had significantly expanded liquidity provisions in response to the decrease in market liquidity under the financial turmoil.

Money market operation; Year-end; Monetary policy

JEL classification:
E50; E52; E58; G10

We would like to thank our colleagues at the Bank of Japan for their helpful comments and discussions. Any remaining errors belong to the authors. The views expressed in this paper are those of the authors and do not necessarily reflect those of the Bank of Japan.

  • *1 Monetary Affairs Department, Bank of Japan
  • *2 Monetary Affairs Department, Bank of Japan
  • *3 Monetary Affairs Department, Bank of Japan


Papers in the Bank of Japan Working Paper Series are circulated in order to stimulate discussion and comments. Views expressed are those of authors and do not necessarily reflect those of the Bank.
If you have any comment or question on the working paper series, please contact each author.
When making a copy or reproduction of the content for commercial purposes, please contact the Public Relations Department ( at the Bank in advance to request permission. When making a copy or reproduction, the source, Bank of Japan Working Paper Series, should explicitly be credited.