A deal model can show $6 million in procurement savings while the two procurement teams still disagree about who gets to negotiate the contracts. The spreadsheet has reached a decision that management hasn’t.
To forecast M&A synergies before closing, a CFO needs more than an attractive annual savings estimate. Finance needs to know what actually changes after the deal, who can authorize it, when it happens, and what survives the trip from a deal presentation to cash flow.
In a November 2 CFO.com report, David McCann examined PwC’s 2026 M&A Integration Survey. Only 32% of surveyed acquirers said they fully achieved all their prioritized deal objectives. Among respondents classed as successful acquirers, 59% had translated value opportunities into initiatives with owners, timelines and dependencies before integration; the comparable figure was 28% among limited-success acquirers.
The survey covered 530 executives and dealmakers from large organizations, and the outcomes are self-reported. Those differences are associations, not proof that an initiative tracker causes a successful acquisition. They do, however, point toward a useful discipline: make the value case executable before everyone gets busy executing it.
Forecast M&A synergies from decisions, not percentages
Start by separating the two kinds of promises that regularly share a spreadsheet cell. Cost synergies should have an identifiable expense baseline, a specific change and an implementation date. Revenue synergies need customers, products, a route to market, conversion assumptions and a margin calculation. Extra sales are not extra EBITDA at a 100% margin, however enthusiastically the deal committee may wish otherwise.
For each material synergy, ask: What would happen if the acquisition never occurred? That is the baseline. Then describe the incremental change the combined company can make. Consolidating suppliers might reduce unit purchase prices, but only after a contract is renegotiated. Combining sales teams could improve cross-selling, but only if customer ownership, incentives and product fit make that plausible.
Assign one business owner with authority to make the change. FP&A owns the assumptions and financial bridge, not the procurement negotiations or sales calls. If no one has authority to deliver a promised saving, it belongs in an opportunity scenario, not quietly in the committed forecast.
Make the first-year cash story uncomfortable enough
The annual run rate is often the most flattering number in an acquisition model. The first-year effect is usually a more useful test of whether the business can fund the integration.
Consider a hypothetical procurement initiative promising $6 million in annual savings at full run rate. Suppose the contract changes arrive gradually, producing an average of 50% of that rate during the first twelve months. That means $3 million of first-year savings, before $1.2 million in transition spending and $500,000 in contract-exit charges. The net pre-tax economic benefit is $1.3 million, before tax and other effects. Actual cash movement will depend on payment dates and working capital.
The $6 million can still be a legitimate steady-state target. It just isn’t the first-year cash result. Finance should show both, alongside the costs required to reach the target and the risk that negotiations or systems changes run late. A board can approve an investment with a temporary cash dip. It’s harder to approve a cash dip that nobody bothered to model.
Build the synergy schedule month by month where the timing matters: starting baseline, decision milestone, expected ramp, one-time costs, recurring costs, EBITDA impact and cash timing. Where confidence is weak, put a downside case beside the base case. Don’t bury uncertainty inside a single discount percentage that nobody can explain.
Make every claimed saving earn its place
Once the deal closes, reporting needs to distinguish four things: the original forecast, actions completed, savings actually realized, and cash collected or retained. Those are different milestones. A canceled software license is an action; the reduction in expense is a financial result; the avoided payment is a cash event.
Set a frozen pre-deal baseline and record changes that would have occurred anyway. Otherwise, an ordinary reduction in spending may be celebrated as an acquisition synergy. Watch for double counting when both procurement and operations claim the same savings. For revenue initiatives, reconcile incremental sales to their contribution margin and the selling costs needed to win them.
For each major initiative, a monthly finance review should be able to answer three questions: Is the projected value still credible? Which decision is holding it up? What happens to the cash forecast if delivery slips by a quarter? Those answers are considerably more useful than a green status light beside a line labeled integration progress.
The point isn’t to produce a more elaborate model. It’s to keep the purchase-price rationale connected to the decisions that determine the outcome. If a synergy cannot be traced to an owner, a measurable action and a financial result, finance should say so before it becomes part of the earnings story.
The Schlott Company helps finance teams develop driver-based forecasts, scenario models and management reporting that clarify decisions. If an acquisition case depends on savings that are easier to present than to verify, contact us to discuss building a defensible synergy forecast.
Sources: CFO.com, November 2, 2026; PwC 2026 M&A Integration Survey, September 29, 2026. The numerical business example is hypothetical.