The Accidental Number That Rules the Global Economy
Few figures in modern economics carry as much weight as the 2% inflation target. Central banks across the developed world treat it as gospel, deploying trillions of dollars in monetary policy to nudge price levels toward this sacred threshold. Yet as Richard Coffin of The Plain Bagel reveals, the origin of this number is far less scientific than its devotees might hope. The entire framework traces back to a television interview in New Zealand and a finance minister's casual suggestion, a detail that should give anyone pause when considering how much of the global economy now orbits around it.
An Origin Story Built on Air
The history here is genuinely striking. New Zealand became the first country to implement an explicit inflation target in 1989, at a time when double-digit inflation was ravaging its economy. The legislation that created this framework was primarily about central bank independence, not inflation targeting per se. The target range of 0 to 2% emerged almost as an afterthought.
This monumentally important figure was effectively pulled out of thin air.
Coffin does not overstate the case. The previous finance minister, Roger Douglas, floated a range of zero to one percent in a TV interview before the legislation even passed. The central bank simply bumped the upper bound to 2% for flexibility. No empirical modeling, no rigorous academic debate, no cross-country analysis. Just a round number that felt reasonable. The fact that roughly 45 countries and the entire Euro area have since adopted some version of this target speaks more to institutional mimicry than to the strength of the underlying evidence.
What makes this even more remarkable is the timeline for the United States. The Federal Reserve did not adopt an explicit inflation target until 1996 and did not make it public until 2012. For decades, the world's most powerful central bank was operating without a publicly stated goal for the metric that most defines its mandate. This raises an uncomfortable question: if the specific number mattered so much, why did it take so long to formalize?
The Self-Fulfilling Prophecy
One of the more intellectually honest arguments for the 2% target is that it works partly because people believe it works. When a credible central bank announces an inflation target, market participants adjust their behavior accordingly. Banks price loans around expected inflation, unions negotiate wage increases to match, and businesses set prices with the target in mind.
By communicating an inflation rate to the economy, it actually helped central banks achieve this objective by influencing expected inflation.
This anchoring effect is real and well-documented, but it also reveals a fragility at the heart of the system. The target's power depends entirely on credibility. If market participants ever seriously doubt a central bank's commitment or ability to hit 2%, the self-reinforcing mechanism breaks down. Japan spent decades trying to push inflation up to 2% and largely failing, demonstrating that the anchoring effect is not a magic wand. Credibility, once lost, is extraordinarily difficult to rebuild.
The Case for Not Zero
The standard justifications for targeting positive inflation rather than zero deserve scrutiny. Coffin outlines the main arguments: a 2% target gives central banks room to cut interest rates during recessions since nominal rates cannot easily go below zero; it allows companies to reduce real wages without the political toxicity of nominal pay cuts; and it provides a buffer against deflation.
Each of these arguments has merit, but each also contains a quiet concession. The interest rate argument essentially admits that central banks need inflation to make their primary policy tool functional. Without positive inflation propping up nominal rates, central banks would more frequently hit the zero lower bound and lose their ability to stimulate the economy through rate cuts. This is a pragmatic argument, not a principled one. It amounts to saying that the economy needs a small amount of ongoing price erosion so that policymakers retain their levers.
The wage flexibility argument is even more uncomfortable. Coffin acknowledges the natural reaction:
Richard, what the hell? Why are we making it easier for companies to cut our incomes? That sounds like a conspiracy to screw over workers.
The economic logic holds that during recessions, if wages cannot adjust downward, unemployment rises instead. Positive inflation lets employers hold nominal wages flat while real wages decline, theoretically preserving more jobs. But this framing glosses over a fundamental asymmetry: workers bear the cost either way, through real wage cuts or job losses. The question is not whether workers pay, but how visibly they pay. Inflation targeting, in this light, functions partly as a mechanism for making economic pain less politically conspicuous.
The Deflation Boogeyman
The fear of deflation looms large in central banking orthodoxy, and Coffin gives it significant attention. The standard narrative points to deflationary spirals, where falling prices lead to reduced spending, lower profits, job cuts, and further price declines. Japan's "lost decade" of the 1990s serves as the canonical cautionary tale.
But the historical record is more nuanced than the standard narrative suggests. Coffin cites research from the National Bureau of Economic Research showing that the late 1800s saw both falling prices and rapid economic expansion during the industrial revolution. Technological progress drove prices down while output surged. This distinction between demand-driven deflation, which signals economic weakness, and supply-driven deflation, which reflects genuine productivity gains, is critical and too often collapsed in central bank communications.
One research paper by the National Bureau of Economic Research highlights that during the late 1800s, the global economy saw both falling prices and rapid economic expansion in the face of the industrial revolution.
The counterpoint, as Coffin fairly notes, is that deflation increases the real burden of debt. When prices fall, fixed-dollar obligations like mortgages become harder to service, especially if incomes are also declining. In an era of historically high household and government debt, this is not a theoretical concern. But it is worth asking whether the solution to debt-driven fragility should be perpetual currency debasement, or whether the real problem is the debt accumulation itself, something that low interest rates and positive inflation have actively encouraged.
The Measurement Problem
One of the most underappreciated issues Coffin raises is the difficulty of even measuring whether the 2% target is being hit. Consumer price indices do not capture the full reality of household price experiences. They struggle with substitution effects, quality adjustments, and the divergence between asset prices and consumer prices. Housing costs, in particular, are notoriously difficult to measure accurately.
These indices don't always capture the actual price increases that households are experiencing given that they don't account for things like substitution where households change their spending behavior based on changing prices.
This measurement gap matters enormously. If the yardstick itself is unreliable, then the entire framework of targeting a specific number becomes less coherent. A central bank might declare victory at 2% while households experience something closer to 4% or 5% in their actual cost of living. Milton Friedman's characterization of inflation as "taxes without legislation" resonates here. The gap between measured and experienced inflation functions as a hidden transfer of wealth from savers to borrowers and from households to governments.
The Inertia Trap
Perhaps the most telling argument for why the 2% target persists is the simplest: changing it would be destabilizing. Former Fed Chair Alan Blinder has suggested that a higher target might have been a better choice, but acknowledged the difficulty of moving the goalposts after decades of commitment to 2%. The target endures not because it has been proven optimal, but because the cost of changing it may exceed the cost of keeping it.
Part of the reason we have a 2% inflation target from many of these developed nations is inertia and the fact that now it's a little difficult to change.
This is a remarkable admission. The global monetary framework rests on a number chosen almost at random, sustained by institutional momentum, and defended primarily on the grounds that abandoning it would undermine the credibility that makes it work. It is circular reasoning elevated to the level of macroeconomic policy.
Bottom Line
Coffin provides a balanced and accessible walkthrough of a topic that deserves more skeptical scrutiny than it typically receives. The 2% inflation target is not a natural law or the product of rigorous empirical optimization. It is a historical accident that became entrenched through institutional adoption and the self-reinforcing dynamics of credibility. The arguments supporting it are real but conditional, and the arguments against it, particularly regarding measurement problems, distributional effects, and the distinction between good and bad deflation, deserve more weight than central banking orthodoxy typically grants them. For households watching their purchasing power erode year after year, the comfort that this erosion is "only" 2% rings hollow, especially when the true figure may be meaningfully higher and the alternative frameworks have never been given a serious trial in the modern era.