US deficits drive yield curve steepening, LSEG claims

US deficits drive yield curve steepening, LSEG claims

Mounting trade and budget deficits are pushing the US economy into increasingly precarious territory, LSEG Data & Analytics has reported.

Recent figures point to a rapid deterioration in the country’s credit profile, with the widening gaps also driving a steepening in the yield curve, it said.

Fresh data highlights a sharp 41.3% jump in pre-tariff imports in early 2025, lifting total imports to $346bn by March and sending the trade deficit to $163bn. Consumer goods and capital equipment dominated the surge as companies sought to stockpile ahead of expected tariff hikes. The influx came despite the US economy contracting by 0.3% in Q1 2025, weighed down by weaker government spending and higher imports, both of which cut into GDP growth, it said.

The imbalances have already taken a toll on the US credit profile. Moody’s has downgraded the country’s long-term issuer and senior unsecured ratings from Aaa to Aa1, citing rising fiscal deficits and growing interest payments on federal debt. Following the downgrade, the five-year credit default swap spread on US debt widened by 20 basis points, leaving it trading above peers such as Austria and Finland.

The 30-year US Treasury yield touched a 19-month peak in May as fiscal concerns mounted, LSEG claims. This comes as the US Congress passed a new tax bill extending $4.5tn in Trump-era tax breaks, which the Congressional Budget Office estimates will push the budget deficit towards 7% of GDP in coming years. The Committee for a Responsible Federal Budget has placed the bill’s cost at $3.1tn over the next decade, equivalent to roughly 11% of US GDP.

Looking ahead, the US debt-to-GDP ratio is projected to rise by 8–10% within the current term. LSEG Data & Analytics analysis shows that a 10% increase in the debt-to-GDP ratio could push long-term bond yields nearly 100 basis points higher. After breaching 5% in 2025, the 30-year yield could move past 6% before the end of the presidential term.

For more insights about the US budget and trade deficits, read the full story here.

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