Nominal GDP Targeting

What Is Nominal GDP Targeting?

Nominal GDP targeting (NGDP targeting) is a monetary policy framework under which a central bank sets its policy instruments — primarily the short-term interest rate and, potentially, asset purchases — to keep the level or growth rate of nominal GDP (real GDP growth plus inflation) on a predetermined path. A central bank might, for example, target 5% nominal GDP growth annually, implying it would tolerate 3% real growth with 2% inflation, or 1% real growth with 4% inflation during downturns.

Unlike inflation targeting, which focuses solely on the price level, NGDP targeting is explicitly countercyclical on both sides of the mandate: during recessions, the central bank is forced to be more accommodative (since falling real output drags nominal GDP below target), while during booms with above-target growth, it must tighten even if inflation appears contained. The framework was originally theorized by economist Scott Sumner and found support from economists including Lars Svensson and, notably, some voices at the Bank of England.

The framework comes in two variants: growth-rate targeting (hit 5% NGDP growth each year) and level targeting (maintain the path, making up for past shortfalls). Level targeting is generally considered superior because it prevents the expectational anchoring problems that plague pure inflation targeting — if the central bank misses its target in year one, it explicitly commits to overshooting in year two.

Why It Matters for Traders

NGDP targeting discussions resurface whenever central banks appear to be navigating conflicting mandates. When the Fed raised rates aggressively in 2022–2023 despite a sharp contraction in real GDP growth, NGDP framework advocates argued that nominal spending was far above trend and justified aggressive tightening — a view that turned out to be directionally correct.

For fixed income traders, an NGDP-targeting regime would structurally change the term premium and rate volatility profile. Because the central bank commits to a nominal path that includes real output, the correlation between rates and equity risk would shift — bonds would behave more like genuine safe havens during recessions (the bank would ease aggressively) and would face more selling pressure during inflationary booms.

How to Read and Interpret It

When analyzing monetary policy through an NGDP lens, traders should track:

• NGDP growth relative to its pre-crisis trend: A persistent gap below trend argues for sustained accommodation, regardless of reported inflation.
• The split between real growth and the GDP deflator: NGDP targeting implies central banks should be indifferent to this split within the nominal total — a regime shift from inflation targeting.
• Market-implied nominal GDP expectations: These can be approximated by combining GDP nowcasts with breakeven inflation rates. When market-implied NGDP runs well above a 4–5% trend, policy tightening is consistent with the framework.

A threshold rule of thumb: if the trailing 4-quarter NGDP growth rate exceeds the target path by more than 200 basis points, an NGDP-targeting central bank would be signaling tightening.

Historical Context

In the aftermath of the 2008 crisis, U.S. NGDP growth fell approximately 8 percentage points below its pre-crisis trend by 2010 and never fully recovered. Proponents argued that a credible NGDP level target would have authorized — and communicated — far more aggressive quantitative easing than the Fed actually deployed, potentially shortening the recovery. Separately, in 2012, Chicago Fed President Charles Evans proposed a policy threshold (Evans Rule) that bore conceptual similarity to NGDP targeting, triggering a notable rally in risk assets and a steepening of the yield curve.

Limitations and Caveats

The primary practical obstacle is real-time measurement: GDP is reported with a significant lag and subject to large revisions, making it difficult for a central bank to react in a timely manner. There is also the political challenge that NGDP targeting would explicitly commit the central bank to tolerating higher inflation during supply shocks — a difficult message to communicate publicly.

What to Watch

• Fed and ECB framework reviews for any language incorporating output-level commitments.
• Current U.S. NGDP trajectory relative to the 2010–2019 trend path.
• Academic and think-tank commentary from the Mercatus Center and Brookings Institution, which often presage central bank thinking.