Japanese Prime Minister Sanae Takaichi is advancing a proposal to reduce the consumption tax on food, a move that would mark the first cut to the levy since its introduction in 1989.
The plan aims to stimulate domestic consumption and is part of a broader 370 trillion yen public-private investment strategy designed to accelerate economic growth.
However, the fiscal expansion comes at a time when Japan's debt servicing costs are already climbing, raising concerns about the sustainability of the government's balance sheet.
Markets are likely to scrutinize the proposal for its implications on the yield curve.
With the Bank of Japan gradually normalizing monetary policy, any signal of renewed fiscal looseness could pressure long-end yields higher.
The prospect of a tax cut reduces immediate government revenue, potentially widening the deficit and increasing the supply of Japanese government bonds (JGBs) needed to fund the shortfall.