Inflation targeting, explained from a purchasing desk

Monetary policy is discussed at a level of abstraction that hides what it does for an ordinary company. From a purchasing desk it is much simpler.

What the target replaced

Before it, forecasting costs twelve months out meant guessing at inflation, at the exchange rate and at whether the central bank would defend a level or abandon it. Three unknowns, all correlated, none of them published.

A plan built on that is not a plan; it is a hope with a spreadsheet attached.

What it provides

A stated number for the medium term, a quarterly published forecast with a fan chart showing uncertainty, a fixed decision calendar and an explanation after each decision.

None of that guarantees the outcome. What it gives is a reference point that both parties to a contract can use.

What it changed in contracts

Indexation clauses became arguable on a common basis. A supplier proposing an annual increase and a buyer resisting it are now arguing about a published index rather than about who is more pessimistic.

Longer contracts became possible, because a two-year commitment requires a defensible assumption about the second year.

The limits, honestly

A target is missed frequently, and it was missed by a wide margin during the worst of the disruption. Nobody claims otherwise.

What matters is whether the misses are explained, whether policy responds and whether the target is restored. Judged that way, the framework has held.

The practical habit

Read the quarterly inflation report. It is written for economists and the summary is written for everyone, and it is the single most useful free document available for planning a year here.

At a purchasing desk all a target does is remove one variable from the plan — and that is worth far more than it sounds. You can only sign a three-year supply contract if you can forecast the price escalation. Inflation targeting gave us exactly that: the ability to write long contracts.