The International Monetary Fund (IMF) has warned that governments in advanced economies, particularly the United States, should avoid relying too heavily on short-term debt because it can expose public finances to rising borrowing costs more quickly when inflation increases. According to a report by the Wall Street Journal cited in the October 14, 2026, news report, the Fund highlighted the risks associated with shorter debt maturities at a time when inflation shocks are becoming more frequent and interest rates remain a major concern for governments.
Longer-term borrowing yields have increased in recent years, which the IMF attributed partly to rising government debt issuance and weaker demand from traditional buyers, including central banks that have typically held longer-maturity securities. Faced with higher costs for long-term borrowing, some governments have increasingly turned to short-term debt because it often carries lower interest rates at the time of issuance. However, the IMF cautioned that this approach can create additional financial pressure if inflation rises and central banks respond by increasing policy rates.
Short-term government debt must be refinanced more frequently than longer-term securities. When existing bills mature, governments need to issue new debt to meet their repayment obligations. If interest rates have increased in the meantime, the replacement borrowing may become significantly more expensive. This means that savings achieved through lower initial interest rates can be offset, or even reversed, when governments have to refinance their obligations under less favourable market conditions. The Fund’s warning is particularly relevant during supply-driven inflation shocks, when central banks may need to tighten monetary policy to contain rising prices.
The IMF said several advanced economies are refinancing a larger share of their debt at shorter maturities, allowing changes in central bank policy rates to affect government borrowing costs more quickly. The combination of high public debt and shorter repayment periods can also make the process of restoring price stability more difficult and expensive. Higher interest payments place additional pressure on government budgets, potentially limiting the funds available for public services and other spending priorities. The Fund’s assessment suggests that the structure of government borrowing is an important consideration alongside the overall amount of debt.
Among the Group of Seven economies, the United States has relied most heavily on short-term Treasury bills to finance its budget deficit, according to the report. France is also considering increasing its issuance of shorter-term debt as investors become more reluctant to lend to the heavily indebted country over longer periods. These developments illustrate how governments may adjust their debt strategies in response to changing investor demand and the cost of long-term financing. However, the IMF’s warning indicates that reducing immediate borrowing costs through shorter maturities can increase exposure to future interest rate changes.
Governments may choose short-term securities because they avoid locking in elevated long-term interest rates. The strategy can appear beneficial if inflation declines before the securities mature, allowing governments to refinance at lower rates. Yet, if inflation remains high or another supply shock occurs, the cost of issuing replacement debt may rise instead. The report cited the war between the United States and Iran as an example of a supply shock that could increase inflationary pressure. In such circumstances, central banks may keep interest rates elevated for longer, increasing debt-servicing costs and complicating government efforts to control public borrowing.
The European Central Bank has raised its key interest rate twice since the conflict began in late February, according to the report. Investors were also expecting another increase before the end of 2026, followed by further increases in 2027. These expectations highlight the uncertainty governments face when planning debt issuance and refinancing schedules. Although market expectations can change as economic conditions develop, higher policy rates can feed into the cost of newly issued and refinanced short-term debt more rapidly than into borrowing locked in at fixed rates for longer periods.
The IMF also pointed to the growing burden of interest payments on government finances. It projected that US government interest payments would reach 5.7% of gross domestic product in 2031, compared with 2.8% before the COVID-19 pandemic. The projected level would be roughly equal to US Social Security spending, illustrating the scale of the potential fiscal pressure. As interest expenses increase, governments have less flexibility to allocate revenue to other priorities without raising taxes, cutting spending or borrowing more.
The Fund’s assessment also highlighted the importance of primary balances, which measure government revenue against expenditure before interest payments. Governments generally need to improve their primary balances when debt-servicing costs rise if they want to prevent debt from growing faster than the economy. Globally, the IMF estimated that a primary deficit of 2.6% of gross domestic product would be consistent with stabilising debt relative to economic output, down from the current level of 3.3%. A smaller primary deficit would therefore be required to keep the debt ratio stable under the Fund’s assessment.
Despite that requirement, the IMF expected the global primary deficit to widen in 2026, moving in the opposite direction from what would be needed to stabilise debt. This combination of higher interest expenses and weaker primary balances could increase pressure on government finances worldwide. The Fund’s warning underscores the importance of managing both the level and maturity structure of public debt, particularly in an environment where inflation shocks and changes in monetary policy can quickly alter refinancing costs. Governments seeking to reduce borrowing expenses may therefore need to balance the immediate appeal of short-term financing against the risks of more frequent refinancing and potentially higher future interest payments.
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