The financial system's response to a rising dollar depends on its starting point. When the dollar surges from a period of weakness (a 'low dollar regime'), the shock is amplified because markets are unhedged and unprepared. This creates a much more violent tightening effect than a rise from an already strong position.

The initiation of the Fed's cutting cycle is the critical trigger for a weaker dollar against EM currencies, outweighing any mixed forward-looking commentary. This is because the cycle's start begins to erode the US carry advantage, a key structural factor supporting EM FX performance.

The U.S. dollar's decline is forecast to persist into H1 2026, driven by more than just policy shifts. As U.S. interest rate advantages narrow relative to the rest of the world, hedging costs for foreign investors decrease. This provides a greater incentive for investors to hedge their currency exposure, leading to increased dollar selling.

Even if US inflation remains stubbornly high, the US dollar's potential to appreciate is capped by the Federal Reserve's asymmetric reaction function. The Fed is operating under a risk management framework where it is more inclined to ease on economic weakness than to react hawkishly to firm inflation, limiting terminal rate repricing.

The Fed's long-standing asymmetric dovish reaction function, which has weighed on the dollar, is neutralizing. Internal dissents and Chairman Powell's commentary signal a more balanced policy stance, which could shift from being a dollar headwind to a tailwind depending on incoming economic data.

The US dollar has been trading cheaply relative to interest rates. A hawkish Fed outcome could trigger a rally as the currency closes this 'misvaluation' gap, even if short-term rates don't reprice significantly. This suggests the dollar has a valuation-based tailwind independent of immediate policy moves.

The 2026 outlook for government bonds and the US dollar is not a straight line. It's a tale of two halves, with an expected front-loaded rally (lower yields, softer dollar) by mid-year as the Fed cuts rates, before yields and the dollar drift higher into year-end.

In shallow easing cycles, historical data shows Treasury yields don't bottom on the day of the final rate cut. Instead, they typically hit their low point one to two months prior, signaling a rebound even as the Fed completes its easing actions.

According to Keith McCullough, historical backtesting reveals the rate of change of the U.S. dollar index is the most critical macro factor for predicting performance across asset classes. Getting the dollar right provides a significant edge in forecasting moves in commodities, equities, and other global markets.