• The PBoC holds its benchmark rates steady in June, limiting support for the NZD.
• The US-Iran ceasefire remains fragile, reigniting demand for safe-haven assets.
• The Reserve Bank of New Zealand turns hawkish but fails to stem the Kiwi's decline.

NZD/USD trades in negative territory around 0.5730 on Monday, extending its retreat for the fourth consecutive day. The pair hit its lowest level since April 8, against a backdrop of broad US Dollar (USD) strength and persistent uncertainty surrounding the US-Iran peace process.

The People's Bank of China (PBOC) announced on Monday that it would keep its Loan Prime Rates (LPRs) unchanged. The one-year rate holds at 3% and the five-year rate at 3.5%. The decision, in line with expectations, provides no additional support to the New Zealand Dollar (NZD), whose fortunes remain closely tied to Chinese economic dynamics.

The US Dollar Index (DXY), which tracks the Greenback against a basket of currencies, is recouping losses following Friday's pullback from its highest level since May 2025. The renewed appetite for the US Dollar reflects a combination of a hawkish Federal Reserve (Fed) and a tense geopolitical backdrop. At its first meeting under the chairmanship of Kevin Warsh, the Fed left its benchmark interest rate unchanged between 3.5% and 3.75%, with Warsh stating at the press conference that "price stability" would remain the institution's guiding principle. Futures markets are now pricing in at least a 25-basis-point (bps) rate hike at the September meeting, with some traders eyeing a possible move as early as July.

On the geopolitical front, the situation remains volatile. On Monday, United States (US) Vice President (VP) JD Vance confirmed that mechanisms have been established to keep the Strait of Hormuz open and halt hostilities in Lebanon, adding that technical talks regarding the peace deal with Iran will continue in the weeks ahead. Vance noted that Iran has agreed to invite International Atomic Energy Agency (IAEA) inspectors back, with inspections potentially beginning as early as this week. He also stated that "we have laid a very good foundation for a successful final deal," while calling for a broader regional ceasefire.

Qatar and Pakistan had earlier announced that Washington and Tehran agreed on a formal roadmap aimed at reaching a final peace agreement within the next 60 days. Iranian Foreign Minister Abbas Araqchi confirmed several breakthroughs in the negotiations, including waivers for oil and petrochemical exports, the release of part of Iran's frozen financial assets, and the launch of a broader economic reconstruction program. These developments helped push Oil prices lower and ease concerns over a renewed energy-driven inflation surge.

Despite this diplomatic progress, risk appetite remains cautious. Iran had accused the United States and Israel of violating the ceasefire and temporarily closed the Strait of Hormuz, and US President Donald Trump had threatened direct military strikes against Iran should Tehran-backed groups continue their attacks on Israel. These episodes underscore the fragility of the process and keep a geopolitical risk premium in play, continuing to weigh on riskier assets and driving safe-haven flows toward the Greenback.

Against this backdrop, the Reserve Bank of New Zealand (RBNZ) has adopted a decisively hawkish stance, signaling that its benchmark rate could reach approximately 2.85% by year-end, implying up to three rate hikes. However, this pivot by the New Zealand central bank is not enough to lift the Kiwi, which remains overwhelmed by the strength of the Greenback and the prevailing risk-off sentiment. As long as geopolitical tensions persist and the Fed holds its restrictive course, the path of least resistance for NZD/USD remains to the downside.