Bitunix Analyst: From the Yen to JGBs — the US-Japan Policy Game Is Reshaping Global Rate Pricing

BlockBeats news, September 18 — Global rate-market focus is now extending from the Fed's own decision to how US and Japanese policy transmit through FX and bond markets. Following Warsh's hike, Trump did not publicly pressure him in the way he previously criticized Powell — instead saying that he still supports Warsh. Warsh, for his part, emphasized that the hike was the Fed's autonomous decision after careful evaluation. This "maintain communication, avoid direct confrontation" mode has temporarily reduced political friction — but the real test still lies in whether future policy decisions continue to diverge from White House interests.

Japan is facing more direct policy pressure. Over the past several months, Treasury Secretary Bessent has progressively linked yen stability, fiscal discipline, and BOJ rate hikes together. When Japan seeks US help in stabilizing the exchange rate, the US in turn asks Tokyo to address the inconsistency between fiscal and rate policy. As Japan's 10-year JGB yield briefly broke through 3%, oversized budget needs and fiscal expansion have begun to conflict more directly with bond-market financing costs. The Japanese government wants to maintain growth stimulus and reduce cost of living, but must also avoid JGB pressure that would further push the yen higher and elevate global rate risk.

The BOJ's focus today is therefore no longer just "hike or not" — it is whether Governor Ueda can open room for continued normalization through policy guidance. Consensus expects a 25-basis-point hike to 1.25%, but if forward guidance leans cautious, the yen — which has already priced tightening ahead — could face pressure. Conversely, if the BOJ releases a clearer signal for additional hikes ahead, JGB yields could face further upward pressure. This forms Japan's core policy contradiction: higher rates are helpful for stabilizing the yen and suppressing inflation, but also raise the government's fiscal financing costs.

Meanwhile, the Bank of England has held rates at 3.75%, canceled long-dated bond sales, and slowed quantitative tightening — forming a stark contrast with the tightening pressure Japan faces. With the US, Japan, and UK now in different policy phases, what global bond markets truly need to reprice is no longer any single central bank's next step — it is how high rates, fiscal needs, and central bank balance sheets jointly determine the global long-end cost of capital.