Somebody asks what your currency exposure is. You can answer. The number comes off a report, the report is right, and you know how it was built.
Then they ask a second question. Is that all of it?
That one is harder, and not because you don’t know your own business. The two questions are different, and only the first one has a report behind it.
Why the second question is hard
Your exposure report shows what got captured. Something has to put a balance on it: a process, a rule, somebody’s judgment. That works, and the number it produces is usually accurate.
But what got captured and what is actually there are two different amounts. The gap between them is not an error. It is just something nobody has measured, because measuring it is a different job from producing a report every month.
So when somebody asks is that all of it, they are asking about the gap. And your report cannot answer, because your report is the thing you would be checking.
Four places a balance can be
Hunting for what is missing has no end point. Better to be exhaustive about where a balance can sit in the first place. There are four places, and every balance is in one of them.
Fig 1 · Four places
Two questions. Four outcomes. Every balance is in exactly one.
They add up to the whole thing. There is nowhere else for a balance to be.
Before Anyone Asks
On the report, being managed. The ordinary case.
On the report, left alone on purpose. Somebody looked at it and decided not to act. That is a decision, not a miss.
In the books, but not on anything that sorts by currency. This is the big one. Your Mexican subsidiary owes a supplier in euros. The payable is recorded. The amount is right. But it sits in that subsidiary’s ledger, and nothing about the way it is filed brings it to anyone’s attention as currency exposure.
In the books, but the books do not say which currency. Rarer and stranger. The money is provably there. The record just does not carry the one field you now need, because somebody set that account up years ago for sensible reasons that had nothing to do with currency.
What makes this useful is not that there are four. It is that there are only four, and they add up to the whole thing. So is that all of it stops being an open-ended hunt and becomes a question you can actually close: show me what sits in each of the four.
What closes the gap
Two steps, neither of them clever.
Fig 2 · What closes the gap
Two steps. Each produces a different part of the answer.
Then say the remainder out loud instead of absorbing it. Where it sits. How big it is.
Before Anyone Asks
Read the whole ledger by the currency each transaction was actually in, rather than by entity or account. That is what surfaces the third case. It is dull work, and it is the only way, because nothing else looks at a ledger that way.
Then check your total against the company’s own official balances. Whatever refuses to reconcile is the fourth case. That figure is calculated rather than guessed: the official total, less everything that tied back line by line.
Then say the remainder out loud instead of absorbing it. Where it sits. How big it is.
The part people find strange
A number built this way gets stronger when somebody attacks it.
Fig 3 · Under pressure
What happens when somebody pushes on the number.
Count what you cannot prove against yourself, and a challenge can only move it one way.
Before Anyone Asks
Anything you cannot prove gets counted against you rather than for you. So when somebody disputes a line and you go and look, the number can only improve.
That is the opposite of how most numbers behave in a board meeting. It is also why this one survives being forwarded to people who were not there when it was built.
Saying it out loud
This is what we have captured. Here is what we checked it against. The part that ties back to the books, I can show you. The part that does not, I can name and size rather than leave as a hole. And it is built conservatively, so if you push on it, it moves up.
Nobody expects you to have counted every dollar yourself. What gets remembered is whether you knew where the edge of your own number was, or found out in the meeting along with everybody else.
It has a name
Everything above is about tracing a number. Where it came from, what is inside it, what is still outside it.
Tracing matters, and on its own it is not enough. A figure you can trace but cannot explain is still a figure somebody has to take on trust.
Investment managers have a word for the difference. Attribution: not what the return was, but where it came from, separated into the part somebody decided and the part nobody did. It is not a word corporate treasury reaches for, which is strange, because the question is identical. What is our exposure, what moved it, and which of that was a choice.
Fig 4 · Tracing, then explaining
Tracing matters. On its own it is not enough.
You cannot explain a figure whose boundary you have not found.
Before Anyone Asks
Knowing where the edge of your own number is, is the first part of that. Not the whole of it. But you cannot explain a figure whose boundary you have not found.
Before Anyone Asks