Why Central Banks Target 2% Inflation

In the world of modern economics, the concept of a central bank targeting a specific inflation rate—usually 2%—is often treated as an immutable law of nature. From the United States and Canada to the Eurozone and even recently China, this figure serves as the North Star for monetary policy. However, as Richard from "The Plain Bagel" explains, the origin of this specific number is surprisingly arbitrary and far more recent than many might assume. While the goal of these institutions is to maintain price stability, the decision to aim for a 2% annual increase in prices, rather than 0% or even a decrease, is rooted in a mix of historical happenstance and specific economic theories. The story begins in New Zealand in 1989. At the time, the country was struggling with persistent double-digit inflation and sought to grant its central bank independence to manage the economy more effectively. During this period of legislative change, the finance minister and the head of the central bank were tasked with establishing a public inflation target. The specific choice of a 0% to 2% range appears to have been inspired by a television interview given a year earlier by the then-Finance Minister Roger Douglas, who suggested a target of 0% to 1%. To allow for more flexibility, the upper bound was raised to 2%. This figure was essentially pulled out of thin air without a robust empirical foundation, yet the policy proved remarkably successful. Within a few years, New Zealand’s inflation dropped into the target range. The success of this experiment revealed the power of "anchoring expectations." If a central bank is perceived as credible and independent, simply announcing a target influences the behavior of market participants. Banks set interest rates based on that 2% expectation, and labor unions bargain for 2% raises to ensure salaries keep up with the anticipated cost of living. Consequently, the economy begins to move toward that figure simply because everyone believes it will. This psychological effect led other developed nations, including the U.S. Federal Reserve, to adopt similar targets, though the Fed did not make its 2% goal public until 2012. Several key arguments are used to justify why a low, positive inflation rate is preferable to zero or negative inflation. First, 2% is considered low enough that it does not drastically disrupt daily life or the immediate value of currency, even though it results in a dollar losing half its value over roughly 35 years. Second, a positive inflation rate provides central banks with more room to maneuver. Because lenders demand compensation for the loss of purchasing power, higher expected inflation leads to higher nominal interest rates. This gives central banks more space to cut rates during a recession before hitting the "zero lower bound," where rates cannot realistically go lower. Another more controversial justification involves "real wages." In an ideal economic model, companies should be able to lower wages during a downturn to stay afloat and avoid layoffs. In reality, nominal wage cuts are rare and highly unpopular. However, if there is 2% inflation and a company keeps wages stagnant, it has effectively reduced its labor costs in "real terms" without the friction of a nominal pay cut. This allows the economy to reach equilibrium more smoothly, albeit at the expense of the worker's purchasing power. The transcript also addresses why economists treat deflation like a "boogeyman." While falling prices might sound beneficial to savers, economists fear a "deflationary spiral." If consumers expect prices to be lower in the future, they delay purchases, which reduces corporate profits. This leads to job cuts and lower wages, further reducing demand and causing prices to fall even further. This cycle can lead to severe economic stagnation, as seen in Japan’s "Lost Decade" of the 1990s. Furthermore, deflation increases the real burden of debt. Since mortgages and credit card balances are fixed in dollar amounts, they become harder to pay off as the value of money rises and incomes potentially fall. Despite these fears, the video notes that not all deflation is harmful. Technological innovation, such as that seen during the Industrial Revolution in the late 1800s, can lead to falling prices alongside rapid economic growth. The primary issue with inflation targeting is its uneven impact; wages often fail to keep pace with price increases, and standard measurements like the Consumer Price Index (CPI) may not accurately reflect the actual costs households face due to substitution biases. Additionally, inflation imposes "menu costs" on businesses and can push households into higher tax brackets even when their real income hasn't increased. Ultimately, the reason many nations stick with the 2% target today is a matter of inertia and credibility. Once a target is established, changing it could signal a lack of commitment, potentially destabilizing the very expectations that make the policy work. While the 2% figure may have started as an arbitrary suggestion in a New Zealand TV studio, it has become a cornerstone of global economic stability that central banks are hesitant to abandon. By maintaining this target, they hope to balance the need for economic growth with the necessity of predictable price levels.