National tax revenue fell in January from a year earlier for the 17th consecutive month amid the prolonged economic slump, the Finance Ministry said Monday.

The revenue came to 3.25 trillion yen, down 5.4 percent from January of last year.

The decline was also due to a drop in revenue from the tax on interest on maturing long-term postal savings, the ministry said.

As a result, cumulative revenue from last April to January came to 27.66 trillion yen, down 12.3 percent from the previous year. A total of 44.28 trillion yen in tax revenue is projected for the full fiscal year, which ends in March.

By category, income tax revenue, which accounts for about 30 percent of the overall revenue, slipped 5.4 percent to 1.83 trillion yen. Corporate tax revenue, which covers about 20 percent of the total, dropped 13 percent to 209.29 billion yen.

Consumption tax revenue, which accounts for another 20 percent of the revenue, was down 0.5 percent to 465.3 billion yen. Inheritance tax revenue fell 22.9 percent to 92.13 billion yen, the ministry said.