Athanasios Orphanides on Real-Time Monetary Rules and their Impact on the Fed's Framework Review

Episode Summary

Executive Summary: David Beckworth interviews Athanasios Orphanides on his career and research showing how real-time data uncertainty can make standard monetary policy rules perform poorly. Orphanides argues the Fed should use simple, transparent benchmark rules—preferably growth-based and forecast-driven—rather than discretionary fine-tuning or level-based rules that depend on hard-to-measure star variables.

Main Topics: Orphanides' career path in central banking and academia: He recounts moving from MIT to the Federal Reserve, then later to the ECB/Bank of Cyprus, explaining how policy training and practical central banking shaped his research agenda. Real-time data and the limits of the classic Taylor rule: His landmark AER work showed that using real-time data exposes severe measurement problems in output gaps and inflation data, making the classic Taylor rule less operational than it appears in hindsight. Historical monetary policy and the role of policy regime: Orphanides argues that late-1960s and 1970s policy errors reflected systematic attempts to keep unemployment too low, while better periods like the 1950s, Volcker, and Greenspan emphasized stable growth and price stability. Star variables and robust policy rules: He explains why unobservables like r-star, u-star, and potential output are difficult to measure in real time, motivating difference rules and other simple rules that avoid level targeting of uncertain variables. Natural growth targeting as an alternative framework: He describes his preferred rule: an interest-rate rule based on forecasted nominal income growth relative to estimated natural growth, which avoids many measurement issues inherent in Taylor-style rules. Fed framework review, discretion, and transparent benchmarks: He criticizes the 2020 flexible average inflation targeting framework for introducing asymmetries and encouraging excessive discretion, and urges the Fed to publish and use a benchmark rule with transparent deviations.

Key Arguments: Real-time policy evaluation must use information available at the time, not revised data from years later, because data revisions can completely change the apparent success of a rule. The classic Taylor rule is not operational in real time when output gaps and inflation measures are revised and poorly observed. Inflation in the 1960s and 1970s was not simply due to ignorance; it was also driven by a policy objective that prioritized low unemployment, producing persistently easy policy. Level targeting of uncertain star variables creates large risks because small estimation errors can translate into large and prolonged policy mistakes. Difference rules are more robust because they ask whether rates should move up or down, rather than requiring precise estimates of unobserved equilibrium levels. Natural growth targeting is a practical middle ground between monetary growth rules and interest-rate rules: it uses forecasted nominal income growth and an estimate of natural growth, but not a fragile output gap or r-star level. The Fed should use a benchmark rule internally and publicly, then allow only constrained discretion around that benchmark, not open-ended meeting-by-meeting discretion. The 2020 Fed framework went too far by adding asymmetry around employment shortfalls and weakening the discipline of price-stability-focused policy. Publishing rule-based benchmarks and justifying deviations would reduce the risk of large policy errors like the post-pandemic inflation surge.

Data Points: Fed tenure: 17 years - Orphanides served at the Federal Reserve before later central bank roles. ECB governing council service: 2007 to 2012 - He served as governor of the Central Bank of Cyprus and as a voting ECB Governing Council member. Substack frequency: Twice a week - Beckworth announces a new newsletter with Monday and Thursday posts. Taylor rule paper year: 2001 - Orphanides references his AER paper on real-time monetary policy rules. JME historical policy paper year: 2003 - He discusses his Journal of Monetary Economics paper on historical policy analysis and the Taylor rule. Brookings paper year: 2002 - He and John Williams published on robust monetary policy rules with unknown natural rates. Fed price stability objective: 2% - Beckworth notes the Fed’s stated inflation objective in the framework discussion. Forecast horizon for preferred rule: 3 quarters ahead, year-over-year - Orphanides says his preferred natural growth targeting specification uses three quarters ahead year-over-year forecasts. Potential output growth range: About 2% to 4%+ - He notes U.S. estimates of potential output growth have ranged over the last 50 years from roughly 2% to above 4%. Real-time error in potential growth estimate: Usually within 1 percentage point - He argues growth-rate estimates are much less error-prone than level estimates. Historical unemployment gap error example: 2 percentage points in unemployment can imply 4 to 6 percentage points output-gap error - He uses Okun’s law coefficients of 2 in modern usage and 3 in the early 1970s. FOMC internal documents lag: 5-year lag - He says Blue Books and Teal Books become public with a five-year delay. Deviation in 2021 from benchmark rules: More than 200 bps vs natural growth rule; 300-400 bps vs Taylor rule in some quarters - He argues the post-pandemic policy response substantially deviated from rule-based benchmarks. Size of discretionary benchmark deviation discussed: 25 basis points - He cites small deviations as acceptable when transparently explained against a published rule.

Pivotal Quotes: "The natural rate is an abstraction. Like faith, it is seen by its works." — John H. Williams (quoted in the transcript): Used in the Brookings paper to frame the long history of star-variable thinking. "The inputs to the rule keep changing all the time." — Athanasios Orphanides: Explaining why the original Taylor rule was not operational in real time due to data revisions and uncertain estimates. "The combination of one, meeting by meeting discretion and two, multiple conflicting goals makes the Fed vulnerable to all the pitfalls that monetary theory and history teach us." — Athanasios Orphanides: From his critique of the Fed’s policy framework and argument for a simple benchmark rule.

Implications: The conversation argues for a more rule-based, transparent Fed framework centered on robust benchmarks and limited discretion. For policymakers, the lesson is to avoid overconfidence in unobservable variables and to treat post-pandemic inflation as a warning against fine-tuning.