Prime Minister Taro Aso said Thursday he will call for a new large-scale economic stimulus plan in early March after the Diet passes the second supplementary budget for fiscal 2008, sources close to the prime minister said.

The decision came as the 2009 budget was set to clear the House of Representatives on Friday, making it certain to be enacted by the end of the fiscal year on March 31.

The government and the ruling coalition have started studying tax breaks to spur sluggish consumer spending as part of the envisioned plan, other sources said.