Central Bank Policy Divergence: A Research Checklist
A repeatable framework for comparing policy decisions, macro evidence and competing scenarios across a forex pair.
By Charitha Amarasinghe, TRADE90 · Updated · Editorial standards and corrections
Quick answer: Compare the two banks’ current benchmarks, the dated evidence that might change each policy stance, and the next decisions that could test your view. Separate a conditional research scenario from a trade entry or a market-implied forecast.
Want to see current numbers? Open the 28-pair central bank rate comparison →
How do you analyse central bank policy divergence?
Compare the two banks’ current benchmarks, the dated evidence that might change each policy stance, and the next decisions that could test your view. Separate a conditional research scenario from a trade entry or a market-implied forecast.
The aim is a note you can revise when evidence changes. Start with a single pair and a shared horizon, rather than selecting whichever indicator supports a preferred direction.
1. Record the starting gap
Write down the base and quote currencies, benchmark definitions and effective dates. Calculate the signed gap and its absolute size before describing a possible widening or narrowing.
Hypothetical EUR/CAD example: EUR at 3.00% and CAD at 2.50% gives +50 basis points. If EUR falls to 2.75% while CAD stays unchanged, the gap becomes +25 basis points. This is a scenario calculation, not a forecast or a statement of current rates.
2. Build two evidence columns
For each economy, record the latest inflation, employment and growth observations alongside the central bank’s own statement. Keep release dates separate from observation periods so an old quarter is not mistaken for fresh news.
Use equivalent measures where possible. If data frequency or definitions differ, state the limitation. Include a contrary observation: for example, easing inflation may support a lower-rate scenario while resilient employment argues against rapid easing.
3. Define what would change your view
Specify the next evidence that could strengthen or invalidate the scenario. “Narrowing if base-country inflation eases and the quote bank maintains its stance” is testable; “the pair must rise” is not a policy research conclusion.
A decision can leave rates unchanged but alter the stated conditions for future action. Compare the new statement with its predecessor before describing a shift. Do not turn an automated source check into a claim of expert review.
4. Keep a decision log
Save the initial gap, supporting evidence, counterevidence, next release and revision date. After the release, record what actually changed and whether the original scenario still applies.
A useful note has five fields: question; dated evidence; conditional conclusion; invalidation condition; next check. The 28-pair dashboard helps locate comparisons; the pair page provides the detail needed to write this note.
Can this become a trading strategy?
A policy hypothesis alone is not a complete trading strategy. Entry, exit, sizing, execution costs and an independently tested risk process are separate requirements.
Unexpected events and exchange-rate moves can overwhelm a rate advantage. Evaluate a strategy across different conditions before attributing any result to the policy gap alone.
Published by TRADE90 as educational policy research, not personalised financial advice. Examples are hypothetical unless explicitly dated and sourced. See our risk disclaimer and source and correction standards.