The CMO–CFO treaty: marketing accountability in numbers the CFO accepts

What the treaty is#

A CMO–CFO treaty is a small set of metrics both officers have signed, connecting marketing investment to growth outcomes the institution’s plan already recognises. It is called a treaty rather than a dashboard because it settles something between two seats that would otherwise dispute it every budget round: what marketing is accountable for, in whose numbers, and over what horizon.

The word signed matters. A metric the CMO reports and the CFO tolerates is not a treaty. A metric both have agreed measures what the plan needs, derived in a way the finance function can reproduce, is.

What it is for#

Its purpose is to settle marketing’s accountability before it is questioned — so that the budget conversation is about allocation, not about whether marketing can be measured at all. Institutions without a treaty relitigate the second question every year, and the CMO spends the budget round defending the function’s existence rather than arguing for its best use. Institutions with one argue about where the next unit of capital earns most, which is the conversation a CMO can win.

Why most marketing metrics never reach the board#

Most marketing metrics never reach the board because they measure the function’s activity in the function’s language. Reach, engagement, share of voice and sentiment are real measurements of real things, but none of them reconciles to a line the CFO recognises, so the board reads them as evidence that marketing is busy rather than evidence that growth is coming. The treaty measures outcomes in the finance function’s language — revenue attributable to a decision, margin from a pricing move, the cost of acquiring a customer against the value that customer returns — and leaves the activity measures where they belong, inside the function.

The anatomy of a treaty#

A treaty that can do this work has a small number of components. The number of metrics is deliberately low; the discipline is in what each one requires.

• A statement of where growth is expected to come from — portfolio, pricing, channels — so that every metric measures a source the plan names.
• For each source, one outcome measure in the finance function’s terms, with the derivation written down and reproducible by finance.
• The customer evidence behind each expectation: the research the board can trust, distinguished from opinion.
• The horizon over which each metric will be judged, agreed in advance, so that brand investment is not judged on a quarter and a promotion is not judged on a decade.
• Named ownership on both sides, and the forum where the treaty is reviewed.

The horizon clause is the one most often missing, and its absence is what turns the annual review into an argument. Brand and growth investments return on different timescales; a treaty that does not say so will be read as broken by whichever officer wanted the other timescale.

Where it goes wrong#

A treaty nobody has broken is not a strong treaty; it is one that measures nothing the plan depends on. The commonest failure is exactly that: metrics chosen because they are easy to hit, so the treaty is honoured every year and the plan misses anyway. The second is a treaty written by one side — marketing’s measures with a finance signature on the cover, or finance’s measures that marketing cannot influence. The third is a treaty that is never revisited, so that the sources of growth it names are no longer where the institution is looking for growth.

A treaty nobody has broken is not a strong treaty; it is one that measures nothing the plan depends on.

Marketing as capital allocation#

The treaty turns marketing into a capital allocation argument: returns against alternatives, with the evidence behind the claim, rather than a budget to be defended. Once the outcome measures exist in finance’s language, the CMO can make the argument every other officer makes — that this unit of capital, placed here, returns more than it would elsewhere — and can lose it honestly when it is not true. That is the standing a CMO earns: not a protected budget, but a seat in the allocation conversation.

What to do next#

Draft the treaty before the next budget round, not during it, and draft it with the CFO rather than for the CFO. Start from the plan’s named sources of growth, attach one outcome measure and one horizon to each, and write down the customer evidence you are relying on. The CMO Agenda in The Helm works the treaty as one of the seat’s central instruments, with sitting chief marketing and growth officers and the finance seat they must sign with.