In the Diet, the Budget Committee of the House of Councillors will begin deliberations on the supplementary budget bill for this fiscal year on the 27th, which will support the new economic measures. There will be debate on the effectiveness of economic measures, including the flat-rate income tax cut, and the issue of political funding for the LDP faction.

The supplementary budget bill, which underpins the new economic measures with a total of 13.1992 trillion yen in the general account, was approved by a majority of the Liberal Democratic Party and New Komeito, the Japan Restoration Party, and the National Democratic Party at the plenary session of the House of Representatives, and sent to the House of Councillors.

Regarding the flat-rate income tax cuts and benefits to low-income households included in the economic measures, Inada, Deputy Secretary-General of the Liberal Democratic Party, said in NHK's "Sunday Debate" that "we will provide benefits to compensate for the situation where prices are rising rapidly, and we will also cut taxes as part of creating a situation where wages will rise more than prices."

On the other hand, Constitutional Democratic Party of Japan (CDP) Secretary General Okada said, "It is right not to cut income taxes without a clear purpose, and it is important to quickly deliver the necessary money to where it is needed."

The supplementary budget bill will be deliberated by the Budget Committee of the House of Councillors on the 27th and 28th, and will be debated on the effectiveness of economic measures and issues related to political funds by the LDP factions.

The ruling party wants to pass the budget bill by voting on it at the Budget Committee and the plenary session on the 29th, while the Constitutional Democratic Party of Japan and others insist that sufficient time for deliberation should be secured, and consultations are expected to take place.