The government is preparing an economic stimulus package worth ¥13 trillion to support fragile economic growth, two government officials with direct knowledge of the matter said Tuesday, complicating government efforts to fix public finances.

The spending would be earmarked in a supplementary budget for this fiscal year and an annual budget for the coming fiscal year that starts April 1.

Both budgets will be compiled later this month, the sources said, declining to be identified because the package has not been finalized.