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Has the Phillips Curve Become Steeper?
This paper analyzes whether structural changes in the aftermath of the pandemic have steepened the Phillips curves in advanced economies, reversing the flattening observed in recent decades and reducing the sacrifice ratio associated with disinflation. Particularly, analysis of granular price quote data from the UK indicates that increased digitalization may have raised price flexibility, while de-globalization may have made inflation more responsive to domestic economic conditions again. Using sectoral data from 24 advanced economies in Europe, higher digitalization and lower trade intensity are shown to be associated with steeper Phillips curves. Post-pandemic Phillips curve estimates indicate some steepening in the UK, Spain, Italy and the euro area as a whole, but at magnitudes that are too small to explain the entire surge in inflation in 2021–22, suggesting an important role for outward shifts in the Phillips curve.
Public Debt Dynamics During the Climate Transition
Managing the climate transition presents policymakers with a tradeoff between achieving climate goals, fiscal sustainability, and political feasibility, which calls for a fiscal balancing act with the right mix of policies. This paper develops a tractable dynamic general equilibrium model to quantify the fiscal impacts of various climate policy packages aimed at reaching net zero emissions by mid-century. Our simulations show that relying primarily on spending measures to deliver on climate ambitions will be costly, possibly raising debt by 45-50 percent of GDP by 2050. However, a balanced mix of carbon-pricing and spending-based policies can deliver on net zero with a much smaller fiscal cost, limiting the increase in public debt to 10-15 percent of GDP by 2050. Carbon pricing is central not only as an effective tool for emissions reduction but also as a revenue source. Delaying carbon pricing action could increase costs, especially if less effective measures are scaled up to meet climate targets. Technology spillovers can reduce the costs but bottlenecks in green investment could unwind the gains and slow the transition.
The Effects of Inflation on Public Finances
Does inflation help improve public finances? This paper documents the dynamic responses of fiscal variables to an inflation shock, using both quarterly and annual panel data for a broad set of economies. Inflation shocks are estimated to improve fiscal balances temporarily, as nominal revenues track inflation closely, while nominal primary expenditures take longer to catch up. Inflation spikes also lead to a persistent reduction in debt to GDP ratios, both due to the primary balance improvement and the nominal GDP denominator channel. However, debt only falls with inflation surprises—rises in inflation expectations do not improve debt dynamics, suggesting limits to debt debasement strategies. The results are robust to using various inflation measures and instrumental variables.
Industrial Policies for Innovation: A Cost-Benefit Framework
When and how should governments use industrial policy to direct innovation to specific sectors? This paper develops a framework to analyze the costs and benefits of industrial policies for innovation. The framework is based on a model of endogenous innovation with a sectoral network of knowledge spillovers (Liu and Ma 2023), extended to capture implementation frictions and alternative policy goals. Simulations show that implementing sector-specific fiscal support is only preferable to sector-neutral support under restrictive conditions—when externalities are well measured (e.g., greenhouse gas emissions), domestic knowledge spillovers of targeted sectors are high (typically in larger econo...
Broadening the Gains from Generative AI
Generative artificial intelligence (gen AI) holds immense potential to boost productivity growth and advance public service delivery, but it also raises profound concerns about massive labor disruptions and rising inequality. This note discusses how fiscal policies can be employed to steer the technology and its deployment in ways that serve humanity best while cushioning the negative labor market and distributional effects to broaden the gains. Given the vast uncertainty about the nature, impact, and speed of developments in gen AI, governments should take an agile approach that prepares them for both business as usual and highly disruptive scenarios.
Fiscal Rules and Fiscal Councils: Recent Trends and Performance During the COVID-19 Pandemic
Adoption of fiscal rules and fiscal councils continued to increase globally over the last decades based on two new global datasets. During the pandemic, fiscal frameworks were put to test. The widespread use of escape clauses was one of the novelties in this crisis, which helped provide policy room to respond to the health crisis. But the unprecedented fiscal actions have led to large and widespread deviations from deficit and debt limits. The evidence shows that fiscal rules, in general, have been flexible during crises but have not prevented a large and persistent buildup of debt over time. Experience shows that deviations from debt limits are very difficult to reverse. The paper also presents evidence on the benefits of a good track record in abiding by the rules. All these highlight the difficult policy choices ahead and need to further improve rules-based fiscal frameworks.
Tracing Productivity Growth Channels in the UK
What drove the UK productivity slowdown post-GFC, and how is the post-Covid recovery expected to differ? This paper traces the sources of TFP growth in the UK over the last two decades through the lens of a structural model of innovation, using registry data on the universe of firms. The dominant innovation source in the pre-GFC decade were improvements by incumbent firms on their own products, whereas creation of new varieties by entrants took a leading role post-GFC. In the Covid recovery, survey data suggests that creative destruction (i.e., innovation replacing other firms’ products) is expected to gain importance. This emphasizes the need for growth policies that facilitate labor and capital reallocation across firms, in addition to R&D support.
Strengthening the Euro Area
Cross-country differences in economic resilience—in an economy’s ability to withstand and adjust to shocks—remain significant in the euro area. In part, the differences reflect the lack of a national nominal exchange rate as a mechanism to adjust to shocks. The IMF staff has argued that union-wide architectural changes such as the banking union, the capital markets union, and a central fiscal capacity can help foster greater international risk sharing. Yet even these changes cannot insure against all shocks. National policies thus have a vital role to play. This IMF staff discussion note analyzes how national structural policies can help euro area countries better deal with economic sh...
2022 Update of the External Balance Assessment Methodology
The assessment of external positions and exchange rates of member countries is a key mandate of the IMF. The External Balance Assessment (EBA) methodology has provided the framework for conducting external sector assessments by Fund staff since its introduction in 2012. This paper provides the latest version of the EBA methodology, updated in 2022 with additional refinements to the current account and real exchange rate regression models, as well as updated estimates for other components of the EBA methodology. The paper also includes an assessment of how estimated current account gaps based on EBA are associated with future external adjustment.
How Does Profit Shifting Affect the Balance of Payments?
Profit shifting by multinational enterprises—through manipulation of transfer prices of related-party trade, intragroup lending, or the location of intangibles—affects international flows, raising the question of its impact on the current account and external balances. This paper approaches this question theoretically and empirically. In theory, profit shifting distorts the components of the current account and bilateral current account balances but leaves a country’s aggregate net balance unaffected. There is, however, a real effect on current account balances, because taxes are paid to different jurisdictions. Moreover—in practice—the measured current account could change, because not all transactions are equally easy to track. Our panel empirical results broadly confirm that the current account balance tends to be, on average, unaffected by profit shifting, but taking heterogeneity into account we find that both the real tax effect and mismeasurement strengthen income balances—and thus the current account—in investment hubs.
