NEW YORK — The dollar fell across the board on Tuesday, sinking to four-year low against the euro, as investors firmed bets for a Federal Reserve interest rate cut this week.

The euro was 0.5% higher at $1.827, its highest since September 2021. The U.S. dollar index, which tracks the U.S. currency against a basket of six major rivals, was 0.6% lower at 96.787, its lowest since July 3.

The buck, which had steadied in recent months following a significant drop earlier in the year, has come under renewed selling pressure as expectations have risen for the Fed to resume cutting interest rates and as U.S. President Donald Trump renewed calls for aggressive monetary easing.

Markets expect a 25-basis-point rate cut on Wednesday, with rapidly softening labor market data being the key driver of

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