The first hundred days of a deal are measured in numbers nobody trusts yet

Published: 22.08.2026 | Author: Ray Nicholls | Category: Insight — Boards & Investors

Every acquisition arrives with a case attached to it. A price, a set of assumptions, a view on what the combined business will look like in two years.

Then completion happens, and for the next two quarters the people responsible for delivering that case cannot reliably tell you how it is going.

Not because anyone is hiding anything. Because the two businesses count things differently, and nobody has yet done the work of making them count the same way.

The problem is not the numbers, it is the basis

The first consolidated management pack after completion is usually wrong, and everyone in the room knows it.

Revenue recognised on different triggers. Costs sitting in different lines. Accruals set on different conventions. One set of accounts built over years to reassure a founder, meeting another built to satisfy a board and a lender. Both entirely defensible. Neither comparable to the other.

So the pack lands, and the conversation goes sideways. Somebody questions a margin. Somebody else explains why that margin is not really that margin. Twenty minutes disappear into definitions, and the actual decision on the agenda gets deferred to next month.

This repeats until the basis is fixed. On most deals that takes between two and three quarters.

The translation work was already done. By people who have left.

Here is the part that surprises boards.

The reconciliation between the two measurement bases usually does get done — during diligence. Quality of earnings work exists precisely to normalise a target's reported numbers into something comparable. Somebody has already sat with the target's ledgers and worked out where the differences are.

That work then walks out of the door at completion.

It lives in an advisor's model, prepared to answer a specific question at a specific point in time. The deal team demobilises. What remains inside the business is the conclusion, not the method. A number in a report, without the working that produced it or anyone internally who could reproduce it.

This is why completeness is the wrong thing to optimise for. A rough measurement basis that someone inside the business owns and can defend is worth considerably more than a precise one held in an external file. The rough one gets updated when reality moves. The precise one ages quietly until nobody trusts it either.

Boards tend to read this as a systems problem

The instinct in the room is to reach for the systems answer. Get everyone onto one ERP, one consolidation tool, one reporting stack, and the problem resolves itself.

It does, eventually. Systems integration on a mid-market deal runs somewhere between twelve and eighteen months once you account for data migration, chart of accounts design and the inevitable parallel run.

The measurement problem needs solving in about eight weeks.

They are different problems on different clocks. A shared definition of revenue can exist long before a shared system does. So can an agreed chart of accounts, an agreed month-end cutoff and an agreed treatment of the four or five items that actually move the reported result. None of that requires software. It requires somebody to decide, write it down, and hold both finance teams to it.

Meanwhile, the decisions do not wait

This is the part that costs money.

The first two quarters after completion are when a lot of consequential things get decided. Pricing alignment. Headcount. Which sites stay. Which customers are worth keeping. Where the integration spend goes first.

Those decisions get made on the old measurement basis, or on instinct, because the comparable data does not exist yet. By the time the combined numbers become trustworthy, several of them are already sunk.

Nobody records this as a failure. It shows up much later as a synergy case that underdelivered, and the post-mortem usually lands on execution or culture. The more honest answer is often that the business was being steered by an instrument panel that had not been calibrated.

What a board can insist on before completion

Almost everything written about this subject describes what to do after the deal closes. The useful version is what to require before it.

Name the person accountable for the combined measurement basis. Internal, named, before signing. Not a workstream, not a committee. One person who owns the answer to "are these numbers comparable yet."

Ask for the definitions, not the numbers. A single page covering revenue recognition triggers, what sits in cost of sales, how accruals are set and where the month-end cutoff falls, for both businesses side by side. If nobody can produce that page during diligence, that is the finding.

Require the bridge as a working method. Insist the diligence team hands over the reconciliation from reported to normalised as something reproducible, with the logic visible, rather than as a conclusion in a report.

Agree the five numbers the board will steer by in the first two quarters, and accept openly that they will be imperfect. Better to steer by five acknowledged approximations than to wait for thirty accurate ones.

Put a date on when the combined pack becomes trustworthy, and treat it as a milestone with an owner, the same as any other integration deliverable.

The capacity question underneath all of it

None of this is difficult work. It is simply work that nobody's day job has room for.

The incumbent finance leader is running two month-end processes, answering lender questions, and holding a team together through a period where everybody is quietly wondering about their own job. Asking that person to also design and enforce a combined measurement basis is asking for the thing that gets dropped.

Boards that handle this well tend to resource it deliberately, and early. Sometimes that means bringing in someone alongside the existing finance leader for a defined period with a defined end point, rather than adding it to an already full brief. Sometimes it means recognising that the deal has changed the shape of the finance seat permanently, and that the role now requires something it did not require before.

The distinction that matters is timing. Resourced before completion, this is a planned piece of work with a clear scope. Resourced at month four, it is a rescue, and it costs more in every sense.

The synergy case that underwrote the price assumed a shared basis of measurement. That basis is not a by-product of integration.

It is the first thing to build, and usually the last thing anyone schedules.

Pitch Hill Partners specialises in placing CFOs, Finance Directors, Financial Controllers and FP&A leaders into growth, PE-backed, turnaround and transformation situations across the UK. If you are a senior finance leader thin king about your next move, or a board looking for exceptional finance leadership, we would be glad to talk.