Equilon FX
Case 01 / POLICY REGIMES

When the policy rule
changed.

The end of the EUR/CHF minimum rate is a case in distinguishing a policy commitment, a quotation convention and an executable price.

Historical event: 15 January 2015
Equilon reading edition: 25 September 2026
The Swiss franc / January 20151.20

CHF per EUR / former minimum

Read the documented record ↓
Case study · Original references · Interpretation labelled separately
01 / DOCUMENTED RECORD

What the sources establish.

The decision

The SNB ended its minimum exchange rate of CHF 1.20 per euro on 15 January 2015. It also reduced the interest rate on applicable sight-deposit balances to −0.75%.

Read the original document ↗

The earlier regime

The minimum had been in place since 6 September 2011. A March 2015 SNB speech described growing international policy divergence as part of the background to ending it.

Read the original document ↗
02 / THE SEQUENCE

Keep the order in view.

  1. Minimum-rate regime begins

    Source ↗
  2. SNB discontinues the minimum

    Source ↗
  3. SNB explains the new policy challenges

    Source ↗
03 / EQUILON’S INTERPRETATION

Read the quote before reading the narrative

The minimum was expressed as Swiss francs per euro. A lower EUR/CHF number means one euro buys fewer francs; equivalently, the franc is stronger against the euro. Calling it a “franc floor” without identifying the units can invert the meaning. A useful first step is to rewrite the statement as a sentence about what one unit of the base currency buys.

A rule is part of the market environment

The analytical lesson is about conditional reasoning. A relationship observed while a policy rule operates does not show how the same market would behave without that rule. If an argument relies on a minimum rate continuing, that assumption belongs inside the argument. Treating it as permanent background hides the variable whose change matters most.

Do not turn a commitment into an execution guarantee

The original announcement establishes a policy decision. It does not specify the price at which a particular participant could execute an order, close a position or settle an obligation during the adjustment. Those claims would need venue records, transaction times, order instructions and contractual details. This distinction is useful whenever a story moves too quickly from a policy headline to a claimed trading outcome.

Interpret the package rather than one isolated instrument

The removal of the minimum and the negative-rate setting were different parts of the announced package. An analysis that sees only the interest-rate reduction loses the change in the exchange-rate framework. The broader reading habit is to list every material component of a policy announcement before attaching a single label such as “easing” or “tightening”.

What the case leaves open

A retrospective account cannot establish that a reader could have predicted the timing, traded at a chosen price or avoided a loss. Nor does it prove that every managed exchange-rate arrangement will end in the same way. The transferable question is narrower: which parts of the thesis depend on a policy rule remaining in place, and what evidence would tell you that the rule has changed?

Hypothetical arithmetic / not event data

The reciprocal check

Suppose, purely for arithmetic, a quote changes from 1.20 to 1.00 CHF per EUR. The euro’s franc price falls 16.67%, while the franc’s euro value rises 20%. These are hypothetical endpoints, not a reconstruction of the event’s high, low or available execution prices.

Check the distinction

Which claim is supported by the SNB announcement?

Primary documents

Go beyond this reading.

  1. SNB decision announcement / 15 Jan 2015 ↗
  2. SNB policy explanation / 26 Mar 2015 ↗

These documents support the dated institutional record. They do not certify Equilon’s interpretation, guarantee a trading outcome or describe current market conditions.

Keep this thought.

Open my notes ↗

Saved only in this browser. Nothing is sent to the publisher.

Follow a question.

Open the complete library ↗