Turn off the credit tap

The People's Bank of China decided on Sunday to raise the deposit reserve requirement ratio for most financial institutions by half a percentage point to 17 percent from May 10. By removing about 300 billion yuan ($44 billion) from the domestic financial system, the central bank is signaling its determination to tighten credit supply.

It is still not clear if the latest move targets the rapid growth of bank lending, a result of the country's massive stimulus package to fight the global economic crisis. Though bank lending fell to 2.6 trillion yuan ($380.7 billion) in the first quarter this year compared with 4.58 trillion yuan in new loans in the same period last year, credit growth remains fairly strong by historical standards.

The current rise in the bank reserve ratio is to mainly counter inflows of speculative capital from investors betting on yuan gains. As China's foreign exchange reserve continues to rise, the central bank has to absorb excess liquidity in banks over and over again.