Prime Minister Shinzo Abe on Tuesday told his government to draw up a second supplementary budget for fiscal 2018 to fund disaster prevention measures and bolster the agricultural sector.
The extra budget, which is expected to be several trillion yen in size, will also be used on measures to shore up Japan's economy after a contraction in the July-September quarter due to a powerful earthquake and typhoon.
It will be submitted to the Diet session beginning in January.
The government is seeking funds to carry out improvements to infrastructure such as power plants, roads and airports that are found in nationwide inspections to be vulnerable to disasters.
It also hopes to ensure that farmers remain competitive after the entries into force of the 11-member Trans-Pacific Partnership free trade agreement at the end of this year and an FTA with the European Union next February at the earliest.
The government has already set a record-high initial budget of 97.71 trillion yen ($867 billion) for the year through March, and an earlier supplementary budget of 935.6 billion yen was enacted this month to aid disaster recovery.