The Bank of Japan is expected to has reserved about 450 billion yen, or over EUR 3.6 billion to recover from getting away from it, says Nikkei Asian Review.
Last year, the Bank of Japan to draw up an action plan, which allows it to put aside the interest income portion of Japanese bonds.
Interest income is expected to have grown by about 30 percent last year and have reached about 1.3 trillion yen.
Director General of the Bank of Japan Haruhiko Kuroda has stressed the central bank to further expand the CPR, if it does not reach the inflation target.
At the end of March, the Central Bank had a total of 398 trillion yen in front of Japanese government bonds.
The central bank estimates that a one percentage point rise in interest rates would decrease the control value of the bond holdings of 21 trillion yen.