Prime Minister Takaichi told parliament she will "appropriately" control annual debt issuance but would not rule out bonds to fund a tax cut. The 10-year Japanese government bond yield fell to about 2.90%, near a five-week low, and the dollar stayed near 158 yen.
Japan's government offered bond investors a mixed message on Monday. Currency traders did not treat it as a change in the yen's problem.
Prime Minister Sanae Takaichi told parliament that she would "appropriately" control the scale of annual government debt issuance. She also said she would not rule out issuing debt to fund a tax cut. The yield on Japan's 10-year government bond eased about 3 basis points to about 2.90%, near its lowest in five weeks. The dollar traded around 158.1 yen.
Why bond investors were listening
Japan's long-term borrowing costs have risen to levels not seen in a generation. The 10-year yield rose above 3% last month for the first time in three decades.
A pledge to control issuance speaks directly to that concern, though leaving room for tax-cut bonds dilutes it. The pledge may have helped Monday's rally, but bonds also drew support from a broader retreat from risk after last week's U.S. technology selloff, so the move cannot be credited to her words alone.
At the short end, Japan's one-year discount bill auction on Monday cleared at 1.623%, up from 1.575% at the previous sale.
The yen's separate problem
The currency's weakness has a different source. The gap between Japan's policy rate and its inflation remains wide. The Bank of Japan raised rates in September but is reported to be reluctant to move again this month. Governor Kazuo Ueda said on Monday that underlying inflation is close to 2%. With U.S. 10-year yields still above 5%, the difference in returns continues to favor the dollar.
A fiscal pledge can lower the risk premium in long-dated bonds without changing that rate gap. That may help explain why the yen held near 158 even as bond yields fell.
Market implications
One reading is that fiscal reassurance is working. Yields have come down from above 3%, the prime minister has made a public commitment in parliament, and a calmer bond market reduces the risk of disorderly moves that could spill into global rates.
A second reading is that the pledge addresses the wrong pressure for the currency. As long as policy rates sit far below inflation and U.S. yields stay high, the yen remains vulnerable, and a weak yen keeps imported inflation elevated, which eventually feeds back into bond yields.
What to watch
Japan's September trade data on Tuesday evening, Eastern time; September consumer prices on Thursday; the Bank of Japan's Oct. 30 policy decision; any Finance Ministry comment on the yen; and the 10-year yield's response to next month's budget plans. A move in the dollar toward 160 yen would test how far officials will let the currency slide.