TOKYO, Oct 2 (Reuters) - Japan's monetary base jumped to a record high in September, Bank of Japan data showed on Tuesday, as ultra-easy monetary policy lead to an increase in the current account deposits that commercial banks keep at the central bank.
The monetary base, which measures the amount of currency in circulation, rose 9.0 percent in September from a year earlier to a record 124.3 trillion yen ($1.59 trillion), the central bank said.
Current account deposits rose 27.6 in September from a year earlier. Banknotes rose 2.3 percent from a year ago, while coins in circulation rose an annual 0.4 percent.
Last month, the BOJ boosted its asset buying and loan programme, its key monetary tool, by 10 trillion yen to 80 trillion yen.
At more than $1 trillion, the BOJ's total stimulus is now equivalent to nearly a fifth of Japan's economy. ($1 = 78.0600 Japanese yen)
(Reporting by Stanley White and Sumio Ito; Editing by John Mair)
Keywords: JAPAN ECONOMY/MONETARYBASE