Blog · MIS and management reporting
Cost allocation you can defend in a board meeting
Every allocation is an opinion. The ones that survive questioning have a basis fixed before the result, applied the same way every month.
Short answer: an allocation is defensible when the basis was fixed before anyone knew the outcome, it is applied identically every period, and any allocated figure can be opened back to the shared cost it came from. Everything else is arithmetic with an argument attached.
The two questions a board asks
Not “is this the right method”. They ask:
- Why is my number bigger this quarter?
- Who decided that basis?
Both are questions about the method’s stability, not its elegance. An allocation that cannot answer them loses its authority the first time somebody is unhappy — and once a business head successfully argues their allocation down, every other head knows it can be done.
Choose the basis before the result
The failure is almost always sequencing. The allocation runs, someone dislikes their share, and the basis gets revisited in that month. Even where the new basis is better, the change is now indistinguishable from special pleading.
So: set the basis, write down why, date it, and hold it for the year. Revisit it on a schedule. A basis that changes annually by decision is a method; one that changes monthly by argument is not.
Common bases, and what each one actually assumes
| Basis | Assumes | Breaks when |
|---|---|---|
| Headcount | Cost follows people | One unit is capital-heavy and thinly staffed |
| Revenue | Cost follows scale | A unit is growing fast on someone else’s infrastructure |
| Floor area | Cost follows premises | Half the team is remote |
| Direct usage | Cost follows consumption | Usage is not measured, so it gets estimated |
None is correct in the abstract. The useful discipline is saying out loud what the chosen basis assumes, because that is the sentence a board can accept or reject.
Keep it out of the ledgers
Management allocations belong in the management view, not posted into the books. Two reasons. The statutory numbers stay explainable without unpicking a management decision; and the basis can be changed next year without restating anything that was filed.
Make it traceable
The test is the same one as for any management figure: take an allocated amount in a pack and open it out. Which shared cost, which basis, which period, which version of the basis. If that trail exists, the answer to “why is my number bigger” takes a minute rather than a week.
FINK holds allocation bases as data rather than as formulas inside a spreadsheet, with reporting groups for the cuts a board actually asks for. The value calculator estimates what your current management reporting effort costs, from your own answers.
Part of MIS and management reporting. Management reporting that does not agree with the statutory numbers is the commonest argument in a monthly review. These posts are about closing that gap.
Questions
Commonly asked
What makes an allocation defensible?
A basis that was chosen before the numbers were known, applied the same way each period, and traceable back to the shared cost it came from. An allocation that changes when somebody dislikes the result is not a method, it is a negotiation.
Should allocations be pushed into the statutory books?
Usually not. Management allocations answer a question about how the business is run. Putting them in the ledgers makes the statutory numbers harder to explain and the allocation harder to change.
How often should the basis be revisited?
On a schedule, not on a result. Annually is common. Revisiting a basis in the month a business head objects to their number is how an allocation loses its authority.
Related
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