Tax revenues in August increased 11 percent from a year earlier to 5.152 trillion yen, due primarily to income tax levied on a large volume of maturing long-term postal savings, the Finance Ministry said Monday.

Income tax revenues rose 34.7 percent to 2.027 trillion yen, while revenues from withholding tax grew 36.1 percent to 1.988 trillion yen and revenue from declared income tax fell 10.3 percent to 38.59 billion yen.

The increase is the result of the 20 percent tax on the interest derived from maturing 10-year postal savings with relatively high yields, a ministry official said.

The official said the amount of new postal savings deposits was around 10 trillion yen in July 1991.

Corporate tax receipts fell 1.1 percent to 662.72 billion yen, while consumption tax revenues rose 1.1 percent to 1.607 trillion yen.

Tax revenues for fiscal 2001 to the end of August came to 13.457 trillion yen, up 7.7 percent from a year earlier.