How to Build a EUR/USD Scenario Map Around Central Bank Decisions

Most currency forecasting published for retail audiences takes the form of a number and a date. It is close to useless, and the institutions producing such forecasts generally acknowledge their poor accuracy record when asked directly.

A scenario map is more work and considerably more honest. Instead of predicting where EUR/USD will be, it sets out what would have to happen for each outcome, and what would tell you that you were wrong.

Why point forecasts fail

An exchange rate is the relative price of two currencies, each shaped by an independent central bank, an independent economy and a shared global risk environment. Forecasting one requires being right about:

• the path of US policy;
• the path of euro area policy;
• relative growth between the two;
• global risk appetite;
• energy prices;
• political developments in both blocs.

Being right about most of these and wrong about one produces a wrong answer. Compressing that into a single figure discards the reasoning that would let you update.

Step one: establish what is already priced

This step is skipped constantly and it determines everything that follows.

Interest rate futures publish implied probabilities for each central bank meeting. If the market prices an 80% chance of a cut at the next Fed meeting, that cut is already substantially in the exchange rate.

The consequence: your view only has value where it differs from the market's. Agreeing with the consensus and expecting to profit from it is a contradiction. Before building any scenario, write down what the market currently expects.

Step two: identify the divergence axis

Sustained currency trends come from central banks moving differently. Set out the plausible combinations.

Fed path	ECB path	Differential	EUR/USD direction
Cutting faster	Holding	Narrows for the dollar	Higher
Holding	Cutting	Widens for the dollar	Lower
Cutting	Cutting	Roughly unchanged	Range
Raising	Holding	Widens for the dollar	Lower
Holding	Raising	Narrows for the dollar	Higher

Rows three is where most disappointment originates. Two dramatic-sounding decisions that move together can leave the pair almost where it started, because the differential barely changed.

Step three: write the scenarios

Three or four is usually sufficient. Each needs four components: the conditions, the mechanism, the direction, and the falsifier.

Scenario A — US inflation proves sticky, Europe weakens

• Conditions: US core inflation stops improving; euro area PMIs fall below the expansion threshold.
• Mechanism: The Fed delays easing while the ECB accelerates it. The rate differential widens in the dollar's favour.
• Direction: EUR/USD lower.
• Falsifier: Two consecutive US core inflation prints below expectations, or a euro area PMI recovery above 50.

Scenario B — US labour market cracks

• Conditions: Payroll growth slows sharply; unemployment rises for several consecutive months.
• Mechanism: Markets price faster and deeper Fed cuts; the differential narrows.
• Direction: EUR/USD higher.
• Falsifier: Employment data stabilises, or the Fed explicitly resists market pricing.

Scenario C — both ease together

• Conditions: Inflation falls in both regions; growth softens on both sides without a shock.
• Mechanism: The differential is roughly preserved; neither currency gains a policy advantage.
• Direction: Range-bound.
• Falsifier: Either central bank breaks from the shared pace.

Scenario D — global risk event

• Conditions: A geopolitical or financial shock of significant scale.
• Mechanism: Safe-haven demand for dollars overrides everything else.
• Direction: EUR/USD sharply lower, regardless of the policy picture.
• Falsifier: Stress indicators normalise.

Scenario D deserves a place in every map, because it is the one that overrides the careful reasoning in the other three.

Step four: define the observation schedule

Scenarios are only useful if you know when you will learn something. Build a calendar of the releases that would distinguish between them:

• US CPI and PCE inflation
• US payrolls and unemployment
• Euro area HICP flash estimates
• PMI surveys for both regions
• FOMC and ECB meetings, statements and projections
• German industrial data and the IFO survey

Each release either supports a scenario, weakens it, or is irrelevant. Deciding that in advance is what prevents interpreting every number as confirmation of whatever you already believed.

Step five: state the falsifier explicitly

This is the part that distinguishes analysis from commentary.

Before the data arrives, write down what would tell you the scenario is wrong. Not a vague sense of losing confidence — a specific, observable event.

Without this, the natural behaviour is to reinterpret contradictory information as temporary noise, indefinitely. Writing the falsifier in advance removes the option.

What this does not do

A scenario map does not tell you what will happen. It does not generate entry or exit levels, and it is not a trading system.

What it does is ensure that when information arrives, you already know what it means. That converts data releases from events that provoke reaction into events that resolve a question you had already framed.

A worked habit

Once a month, write a single page:

1. What the market currently prices for both central banks.
2. Three scenarios with conditions, mechanism and direction.
3. The falsifier for each.
4. The calendar of releases that will test them.
5. What changed since last month, and which scenario gained or lost weight.

The value accumulates in point five. Over a year, this produces an honest record of how your reasoning performed — which is information no published forecast will ever give you about itself.

The bottom line

Nobody knows where EUR/USD will be in three months, and the confident numbers circulating have a documented record of being wrong.

What is achievable is understanding the mechanism well enough to know what each piece of news implies, and disciplined enough to have written down in advance what would prove you wrong.

This article is educational and is not financial advice. It contains no price target or trading recommendation. Leveraged foreign exchange trading carries a high risk of loss.