Wall Street Warns: In a Divided Government, the 2027 Debt Ceiling Standoff Will Test the "Safe Haven Myth" of US Treasuries

According to Zhitong Finance APP, the dust has settled on the U.S. midterm elections, with the Democratic Party unexpectedly securing control of Congress, forming the classic combination of a divided government in the market. Historically, investors have often welcomed this kind of political stalemate—it implies policy deadlock and restrained spending. On Wednesday, as news of the Democratic victory spread, the U.S. Treasury yield curve declined across the board, continuing this tradition. Data show that since the mid-1990s, in the context of a divided government, the average yield on the 10-year U.S. Treasury note was relatively low both 1 month and 12 months after the midterm elections.

However, this time Wall Street’s concern is focused on another issue: the debt ceiling.

Deutsche Bank strategist George Saravelos pointed out, “The single largest source of domestic policy uncertainty for the U.S. is the debt ceiling, which is set to become a constraining condition around the second quarter of next year.”

Currently, the U.S. federal government is just about $800 billion away from its statutory borrowing limit of $41.1 trillion. Strategists expect the government to hit that ceiling in the first half of 2027. At that point, the Treasury Department may use extraordinary accounting measures to free up some borrowing capacity to avoid default, but ultimately Congress will need to raise or suspend the debt ceiling to fully eliminate the risk of a technical default.

With the Democratic Party in full control of Congress, it means that the standoff with the Trump administration over government borrowing could be prolonged. Fitch Ratings already warned last month that Democratic control of Congress could heighten political brinkmanship risks around the debt ceiling. The agency also stated that the outgoing, Republican-dominated Congress could act to raise or suspend the cap before its term ends at year’s end—otherwise, this problem will become a major test for the new Congress.

BMO Capital Markets strategist Vail Hartman stated, “If Congress fails to resolve the debt ceiling issue by year-end, the financial markets could face a protracted debt ceiling impasse in 2027.” He expects the Democratic Party will use the debt ceiling as “a powerful bargaining chip to demand concessions from the Trump administration,” potentially resulting in distortions in Treasury bill prices around the anticipated “X-date” (when government funds run out), and increased volatility in cash and repo markets.

Looking back in history, whenever the debt ceiling standoff approached, investors typically sold off Treasury bills maturing around the X-date and bought those maturing before or after, leaving a clear “distortion node” on the yield curve.

Currently, with several months remaining before reaching the ceiling, the Treasury bill curve has not yet shown obvious signs of concern. But the CIBC strategist team (led by Michael Cloherty) reminded investors on Wednesday to “price in more risk premium” for money markets ahead of 2027.

At a deeper level, the fiscal fundamentals are at issue. Schroders senior economist George Brown noted that the current U.S. fiscal deficit is about 6% of GDP, with public debt held exceeding $32 trillion (not including intra-governmental liabilities such as Social Security and Medicare), while both the Trump administration and the incoming Democratic Congress have pledged additional spending—“This (divided government being bullish for Treasuries) assumption needs to be reconsidered.”

He further warned, “If political compromise increasingly means larger deficits instead of fiscal consolidation, investors may demand a higher term premium to hold long-term U.S. Treasuries.” This could lead to a steeper Treasury yield curve.

It is worth noting that past debt ceiling deadlocks have previously raised market concerns that the Treasury might not be able to make timely interest payments on some maturing Treasuries, sparking fears of a “technical default.” Such episodes of governmental dysfunction have triggered rating agencies to take action—in August 2023, Fitch downgraded the U.S. sovereign rating by one notch to AA+, citing the political standoff over the debt ceiling that pushed the United States to the brink of default.

Regarding whether Congress can resolve the risk before year-end, market expectations remain generally pessimistic. CIBC’s Cloherty expects Republicans will attempt to raise the borrowing cap during the “lame duck” session, but he believes this effort will ultimately fail. This means the new Congress will face what CIBC refers to as the “fierce debt ceiling battle in Q4 2027 and beyond.”