The administration may submit an extra budget to the Diet early next year to stimulate the economy amid fears over the negative impact of the planned consumption tax hike in April, Finance Minister Taro Aso said Tuesday.

Aso, also deputy prime minister, again indicated that the administration may draft a supplementary budget amid concerns the consumption tax increase may hamper efforts to beat the chronic deflation besetting Japan.

"If we need certain countermeasures, then they would be discussed in the ordinary Diet session next year," Aso said.