BOJ Seen Hiking to 1.0% in June, Again by Year-End

A second hike within 2025 would push the BOJ's policy rate above 1.0%, a level that starts to approach estimates of Japan's neutral rate. That would mark a full departure from the post-bubble era of zero-rate policy. For JGBs, the curve would bear-flatten as short-end yields rise faster than long-end yields, with the 10-year yield likely testing levels not seen since 2011.

For global bond markets, a sustained BOJ tightening cycle removes a key anchor that has kept Japanese capital flowing into foreign bonds. A repatriation flow could lift yields in the US and Europe, though the scale depends on the pace of hikes. The poll's October-December window leaves room for a move as early as October, which would compress the timeline for portfolio adjustments. The last time oil surged above $106, the dollar jumped 1% and the Japan 225 broke key levels, as detailed in our previous analysis.

Iran War Inflation Channel Tests BOJ's Resolve

The Iran conflict has injected a fresh commodity price impulse into Japan's import bill. Japan imports nearly all its oil and gas, and sustained elevated crude prices feed directly into higher domestic inflation. This external supply shock gives the BOJ a reason to move faster than it otherwise would, even if domestic demand remains fragile.

The transmission is not straightforward: higher energy costs act as a tax on households, potentially dampening consumption. The BOJ, however, appears to be prioritizing the risk of entrenched inflation expectations over the drag from higher import costs. For yen traders, the Iran variable adds a geopolitical risk premium that could accelerate the hiking timeline if oil spikes further. The correlation between Brent crude and USD/JPY has tightened in recent weeks, with yen strength often coinciding with oil supply fears.

The BOJ's June meeting is now the next concrete marker. Before then, Tokyo CPI and the Tankan survey will offer the last major data points that could sway the committee. A print that shows inflation accelerating beyond the BOJ's 2% target would lock in the June hike and raise the probability of a second move before year-end. For positioning, the shift from a dovish BOJ to a hiking BOJ is a regime change that the currency market is still absorbing. For broader forex market analysis, see our forex market analysis section.