Gap cost calculator
A stop is a trigger, not a guaranteed price. This is what the fill costs when the market reopens beyond it - and what it was supposed to cost.
What the numbers mean
The planned loss is your stop doing its job: stop distance times the pip value of your position. The actual loss is what a gap delivers instead - the market reopened or jumped past your level, the stop triggered at the first real price, and the difference is the gap's bill. A stop cannot execute at a price that never traded, so through weekends and news seconds it caps intention, not outcome.
Where gaps come from
FX has no prices from Friday's New York close to Monday's Wellington open, so weekend news reprices pairs before any stop can react - the largest gaps live there. Scheduled releases produce the same effect in miniature: dealers pull quotes for a few seconds and the book reopens elsewhere. The gap size is not knowable in advance, which is exactly why it belongs in your risk arithmetic before you hold a position through either.
What this tool will not tell you
Whether to hold through a weekend or a release. That is a decision about your position, your risk and your plan - this page prices the mechanics so the decision is an informed one, and nothing here is a recommendation to make it either way.
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