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Business March 16, 2026

Oil shock from Iran war may push T-bill, bond yields higher

Oil shock from Iran war may push T-bill, bond yields higher

A wave of uncertainty is building in the Philippine financial markets as escalating tensions in the Middle East send shockwaves through global oil prices. The ripple effect is poised to significantly impact government debt, with expectations of rising yields on Treasury bills and bonds this week.

The Bureau of the Treasury is set to auction off P27 billion in short-term bills on Monday, followed by P20-30 billion in ten-year bonds on Tuesday. However, the auctions are occurring against a backdrop of rapidly increasing crude oil costs, fueled by the intensifying conflict and fears of widespread disruption.

Global crude prices have already surged past the $100 per barrel mark – a level not seen since August 2022 – with West Texas Intermediate and Brent crude climbing over 3% and 2.6% respectively. This dramatic increase isn’t just a number; it’s a warning signal for potential economic headwinds.

Higher energy prices directly translate to increased inflation expectations. Investors, anticipating a loss of purchasing power, demand higher returns on their investments, pushing bond yields upward. This means the government could face increased borrowing costs to finance its programs.

Evidence of this shift is already visible in the secondary market. Last Friday, yields on short-term Treasury bills jumped significantly – the 91-day bill rose by 32.1 basis points, the 182-day by 26.35 basis points, and the 364-day by 36.39 basis points. The ten-year bond yield also climbed, signaling a broader trend.

Market analysts predict subdued demand at this week’s auctions, citing the volatile geopolitical landscape and the unpredictable trajectory of oil prices. One trader anticipates the ten-year bond could average between 6.625% and 6.675%, reflecting the increased risk perception.

The situation is further complicated by escalating rhetoric, including statements suggesting potential direct action. These pronouncements amplify fears of a wider conflict that could severely disrupt global energy supplies, exacerbating the existing pressures.

The potential economic consequences are substantial. Officials warn that inflation could exceed 7% and economic growth could slow by as much as 0.3 percentage points if the oil price shock intensifies. This paints a concerning picture for the nation’s economic outlook.

Last week’s Treasury bill auction already demonstrated a weakening appetite for government debt. The government fell short of its P27-billion target, raising only P19.2 billion as total bids significantly decreased compared to the previous week.

The Treasury awarded less than the planned amount for each tenor – 91-day, 182-day, and 364-day bills – and average yields across the board experienced a sharp increase. This indicates a growing reluctance among investors to accept current rates.

The ten-year bonds being offered on Tuesday were initially issued in February, raising P297.94 billion at a 5.925% coupon rate. However, the market conditions have drastically changed since then, making a similar outcome unlikely.

For the month of March, the Treasury aims to raise P248 billion through domestic borrowing, split between Treasury bills and bonds. This ambitious target will be challenging to achieve given the current climate of uncertainty and rising yields.

The government relies on both local and international borrowing to address its fiscal deficit, currently capped at P1.647 trillion or 5.3% of the country’s gross domestic product. Navigating these turbulent financial waters will require careful strategy and adaptability.

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