Latest / Monetary Policy Explained with Fexingo: Central Banks, Money Supply, and Interest Rates / How Central Banks Use Inflation Targeting Bands
Transcript
- Lucas: So you hear all the time that central banks target 2 percent inflation. Federal Reserve, European Central Bank, Bank of Japan — they all say it. But the reality is messier. Most of them operate with an inflation targeting band, not a single point. Luna: Right, like a range. The Bank of Canada has a 1 to 3 percent band. The Reserve Bank of Australia targets 2 to 3 percent. So why even announce a point if you are really managing a band? Lucas: That is exactly the question. And it matters because the band gives central banks room to breathe. If you are targeting a precise 2 percent, any deviation — say inflation hits 2.3 percent — forces you to justify not tightening immediately. With a band, you can let inflation drift a bit without losing credibility. Luna: But then the band has to be credible. If the public thinks the band is actually a ceiling or a floor, you lose the flexibility you wanted. Lucas: Right. Take the Bank of Canada. Their 1 to 3 percent range is symmetric — they care equally about inflation falling below 1 as rising above 3. That symmetry is crucial. When inflation dipped to 0.5 percent during the pandemic, they aggressively eased. They did not treat 1 as a floor they could just lean on. Luna: Compare that to the Bank of Japan. They have a 0 to 2 percent band, but for years inflation hovered around zero. The band became a ceiling in practice — markets assumed they would never let inflation get to 2 percent, so expectations anchored at zero. Lucas: Exactly. And that is the credibility trap. If your band is seen as an aspiration rather than a commitment, you lose the anchoring effect. The Bank of Japan had to introduce yield curve control and massive asset purchases just to nudge inflation up. Even then, they only briefly hit 2 percent in 2024 before falling back. Luna: So a band helps — but only if the central bank actually defends the edges. Otherwise it is just a pretty graphic on a slide. Lucas: Right. And the Reserve Bank of Australia offers a middle case. Their 2 to 3 percent band is narrower — just one percentage point wide — and they have historically treated it as a target zone they will fight for. In 2023 when inflation hit 4 percent, they hiked rates aggressively to bring it back inside the band. And they communicated that explicitly. Luna: Interesting. So the band width itself signals something. A narrow band suggests a tighter commitment. A wider band, like Canada's 2-point range, signals more tolerance for transitory moves. Lucas: That is right. But there is another layer: the point inside the band. The Bank of Canada targets the midpoint of their band — 2 percent — as the goal. The band is just the tolerance zone. The Reserve Bank of Australia does not have an explicit midpoint; they just say 2 to 3 percent is consistent with their mandate. That actually gives them less guidance when inflation is inside the band but not at the midpoint. Luna: Because if inflation is at 2.1 and you are comfortable, do you still need to adjust policy? The band does not tell you. Lucas: Exactly. And that is where central banks have to rely on other frameworks — like the output gap or financial stability risks. The band is a communication tool, not a full policy rule. Luna: So let's talk about the elephant in the room: the Federal Reserve. They adopted a flexible average inflation targeting framework in 2020, which is like a dynamic band. They aim for 2 percent on average over time, allowing overshoots to compensate for past undershoots. Lucas: And that is conceptually a band, but a time-varying one. The problem is, after the pandemic inflation spike, they allowed inflation to go well above 2 percent for two years. That eroded credibility because the band — or average target — was not well understood by the public. Many people felt the Fed had abandoned its commitment. Luna: So a band that is too flexible can hurt credibility as much as a band that is too rigid. There is a Goldilocks problem. Lucas: Exactly. And that is why many economists argue for a simple point target with a clear tolerance band. The European Central Bank, for instance, announced a symmetric 2 percent target in 2021 — not a band, but they clarified that deviations in either direction are equally unwelcome. That is effectively a band with zero width in communication, but they allow some drift in practice. Luna: But the ECB also has to manage 20 countries with very different inflation experiences. A band that works for Germany might not work for Greece. Lucas: Right. And that is the deeper challenge. Inflation targeting bands are a one-size-fits-all tool in a multi-speed currency union. The ECB's single band cannot capture regional divergence. So they have to rely on other tools — like targeted lending programs — to address local conditions. The band is just the headline. Luna: Let's bring it to a concrete example. Suppose inflation is at 2.4 in Canada, comfortably inside the 1-to-3 band. The Bank of Canada holds rates steady. But if inflation is at 2.4 in Australia, it is at the bottom end of their 2-to-3 band — they might be more inclined to ease if they see downside risks. Lucas: That is a perfect illustration. The same number has different policy implications depending on the band structure. And that is why, when you read about a central bank decision, you need to look at where inflation sits relative to their band, not just whether it is above or below 2 percent. Luna: So next time we hear 'inflation is at 2.4 percent,' we should ask: What band are they using? Where does that fall? And is the band symmetric? Lucas: Exactly. And also ask: Is the band a commitment or an aspiration? Because that determines whether the central bank will actually act when inflation drifts. Luna: Alright, Lucas. Let's keep this practical. Today's episode was all about how central banks use inflation bands to communicate and guide policy. If that made something click for you — maybe you finally understand why the Bank of Canada sounds calm at 2.7 percent while the RBA gets twitchy at the same number — then honestly, if it was worth a coffee to you, that is the link: buy me a coffee dot com slash fexingo. Lucas: Yeah, and it's a low-bar ask. If you got one concrete takeaway, that is enough. We keep this show ad-free, and listener support makes that possible. So no pressure, but if you feel like it, buy me a coffee dot com slash fexingo. Luna: Alright, back to the mechanics. One thing we haven't talked about is how central banks actually enforce the edges of the band. They have tools beyond the policy rate — like forward guidance or standing facilities — to signal that they are serious about the boundary. Lucas: Right. The Bank of Canada, for instance, when inflation dipped below 1 percent in 2020, they not only cut rates but also issued explicit forward guidance that rates would stay low until inflation was sustainably at 2 percent. That was a way of saying 'we will defend the lower edge of the band.' Luna: And the Bank of Japan, when inflation finally rose above 0 in 2023, they did not immediately tighten. They wanted to prove the band was not a ceiling. But markets were skeptical. Lucas: Right. And that skepticism is the real cost of a band that has been treated as a ceiling for decades. It takes years to rebuild the credibility that the band is symmetric. So the design of the band matters, but the history of how it has been used matters even more. Luna: Let's wrap with a forward look. As we sit here in June 2026, inflation in most advanced economies has come down from the 2022–2023 peak but remains above target in some places. The bands are being tested again — this time on the high side. Will central banks be as willing to defend the upper edge as they were the lower edge during the pandemic? Lucas: That is the million-dollar question. The Federal Reserve, for instance, has a point target, but they have allowed inflation to run above 2 percent for several years. If they do not tighten enough to bring it down, the band — or the target — loses meaning. On the other hand, if they overtighten and push inflation below target, they risk a recession. So the band is not just a technical detail; it is the central bank's promise to the public. And keeping that promise requires both communication and action. Luna: So maybe the real lesson is: the band is only as good as the central bank's willingness to live at the edges. Lucas: Exactly. And that willingness is tested when the economy is at the edge. That is when you find out if the band is real or just rhetorical.