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US Debt Ceiling Crisis: Scenarios That Matter

Markets have grown accustomed to the debt ceiling drama, but 2023 has the potential to be an even more dramatic year. Given this possibility, we review the key debt ceiling scenarios, their impact on the macro-outlook and investment implications thereof.

Head of Macro Policy Research
Portfolio Strategist
Chief Economist

In our view, there are three distinct scenarios through which the debt ceiling episode could playout for the financial markets: 1) a non-event, 2) a temporary stress period with lasting fiscal impact and 3) a severe risk-off event with knock-on consequences.

Scenario 1: A Non-Event

Likelihood: Low
Investment Implication: Neutral

For the debt ceiling to be a non-event, it requires a timely political compromise between the Democrats and the Republicans before the appearance of any undue market stress. Given the competing interests of both sides, we find this to be highly unlikely. Republicans view the debt ceiling as a bargaining leverage ahead of the 2024 US presidential election, while Democrats consider any concession as an abuse of constitutional arrangements. Also, Democrats now view Barack Obama’s negotiations in 2011 and 2013 as a political mistake not to be repeated.

The most plausible avoidance of a crisis would be a short-term delay in aligning the debt ceiling deadline with the end of the budgetary cycle in late September. This would hold electoral appeal for Republicans to fold the debt ceiling into a broader fiscal policy debate. Democrats would certainly prefer to avoid this outcome but may accept it as a lesser evil, perhaps with the hope that the timing of US Treasury’s extraordinary measures could permit a few weeks of government shutdown prior to the so-called “x-date” (when the debt ceiling will limit new debt issuance and Treasury can no longer meet all its obligations). In this scenario, markets would simply be facing the same outlook a few months later.

Scenario 2: Temporary Financial Stress and Lasting Fiscal Contraction

Likelihood: High
Investment Implication: Buy Medium to Longer Duration Treasuries

The reality is that an exogenous force is required to break the current political impasse. This could be a foreign policy emergency but is more likely to be financial market stress. During the first major standoff in 2011, markets started to price in default risks only a few trading days ahead of the deadline. Since then, markets are reflecting this risk earlier and more significantly (Figure 1).

However, for market stress to become a substantial "political force," it must worsen. This means, for the needle to move, it would not only require big moves in short-term US Treasury yields but also a sizable drawdown in the equity market. In 2011, the S&P 500 lost only about 5% in advance of the political deal but dropped another 10% in the days that followed (Figure 2). In 2023, these types of market moves would have to precede any last-minute political compromises, including a bipartisan deal.1

The Consequences of a Bipartisan Deal

What would not be temporary, and have arguably helped the equity drawdown in 2011, is the fiscal contours of any bipartisan deal. What is included in that deal matters enormously. Directionally, we know that significant spending reductions would be embedded in medium-term fiscal plans. In other words, after several years of massive positive fiscal impulses, the economy will suddenly have to contend with a material fiscal drag.

The Republican bill has penciled in US$4.3 trillion in spending cuts over ten years. Any compromise would be no more than half that figure, but that would still be the equivalent of 1% of nominal GDP getting shaved off per year in 2024-2026. In real terms, the hit would be somewhat less but still substantial and the tightest fiscal stance since pre-2008 (Figure 3). This is why aspects of the bill that attempt to resolve the debt ceiling crisis (i.e., the agreed-upon budgetary savings) hold such importance.

The deal’s more austere fiscal positioning is likely to occur alongside a less-accommodative monetary stance. After all, even as we expect the US Fed to be in a position to cut rates before end-2023, there still remains a need to reduce the Fed’s balance sheet. In this scenario, both fiscal and monetary policies are likely to be set up for draining liquidity from the system – the reason we think the Fed’s quantitative tightening (QT) will have to end after the debt ceiling. The last rate hike will have been in May 2023, so the Fed is likely to object to financial conditions tightening. And with the likely explosive burst of new Treasury issuance following a debt ceiling deal, QT will no longer be sustainable.

At the same time, not only growth, but inflation, too, is bound to be lower in that environment, although inflation volatility could remain elevated as the world will be more vulnerable to supply shocks.

Scenario 3: Severe Risk-Off

Likelihood: Medium
Investment Implication: All-Round Defensive Positioning

The alternative to any resolution of the debt ceiling would be a non-resolution, leading to more extreme market reactions as chances of a default in US debt would continue to rise. This does not imply a debt default but simply that the deadline would pass. In this scenario, we would expect the Biden administration to draw on controversial legal justifications to continue to make debt payments (despite current denials of the technical and political feasibility), thereby delaying non-debt obligations as much as possible to avert any technical default (see Addendum).

Given the unprecedented nature of such actions and the fiscal impact of suddenly freezing large channels of regular government expenditure, market reactions could continue to exude extraordinary volatility with very rapid moves in short-term rates and sharp drawdowns in equities, commodities and other risk assets (Figure 4). Against this background, rating agencies are likely to issue a credit watch or a downgrade even absent an actual missed bond payment, which could set off a chain of negative reactions.

In the aftermath of the SVB crisis, we were reminded how quickly risks can snowball out of control. Soon after the bruising experience of a widespread deposit flight, the last thing any US banking institution needs is a sudden decline in loan collateral values and a surge in non-settlements. Similarly, the last thing that the US itself needs is another debt downgrade that could impact the ability of certain buyers to own US debt.

While this would be unprecedented, the Fed could help sustain this situation by offering to swap some of their System Open Market Account Holdings (SOMA) holdings for any particular Treasury issue maturing at the time. Currently, the Fed owns US$367 billion of Treasury bills (T-Bills), and while balance sheet expansion and politicization are clearly counter to their current policy stance, these could come under consideration during a scenario of extreme financial stress.

Lastly, once precedent is broken, it is not clear how a sustainable balance is restored. Any political truce could re-erupt with the budget discussion in late September and any unilateral action of the Biden administration could trigger a judicial review process. Either way, some residual higher uncertainty would be sustained, which will anchor tighter financial conditions and prolong a risk-off environment.


The debt ceiling dispute in 2023 is unlikely to be a passing phenomenon. At a minimum, it will produce lasting fiscal headwinds to the US economy and in a worse-case scenario, it could constitute a durable financial stress event. In both cases, long-term yields are likely to come down and risk assets will underperform. As a result, to a certain degree, it may result in the more pessimistic economic forecasts actualizing.

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