The Diet on Tuesday gave the nod to a ¥92.61 trillion draft budget for fiscal 2013 aimed at shoring up the economy.
The budget crafted by Prime Minister Shinzo Abe's administration was approved at a plenary session of the full Lower House later in the day and sent to the Upper House for further deliberations.
Even if the Upper House, in which the ruling camp led by Abe's Liberal Democratic Party lacks a majority, were to reject the budget, it would still be enacted by May 15 under a provision of the Constitution that gives priority to decisions by the Lower House.