The Synergy Realization Gap: Why Projected IT Cost Synergies Rarely Show Up in the P&L
8/17/20264 min read
Almost every deal model for a platform acquisition or add-on includes a line for IT and technology cost synergies, a projected reduction in combined spend once the acquired company is integrated onto the platform's existing systems and contracts. These projections are usually reasonable in direction and routinely wrong in magnitude, not because the underlying logic is flawed, but because the model assumes the integration work happens automatically once the deal closes, when in practice it only happens if someone is specifically accountable for making it happen.
Why the Gap Exists
A deal model's synergy projection is typically built by a deal team estimating what combined spend should look like under full integration, comparing the target's current technology costs against what the platform's existing umbrella contracts and standardized infrastructure would cost for the same footprint. This is a reasonable analytical exercise, and the resulting number is usually directionally sound. The problem is that the number represents an end state, not a plan, and reaching that end state requires specific, resourced execution work that the deal model implicitly assumes will happen without ever assigning anyone the job of actually making it happen.
In practice, the operating team at the platform company is typically focused on day-to-day operations and the more visible parts of integration, management alignment, customer retention, financial reporting, while the technology synergy capture quietly falls into a gap between the deal team that projected it and the operating team that would need to execute it, with neither group treating it as squarely their responsibility.
What This Gap Actually Costs
When technology synergy capture isn't explicitly assigned and tracked, what typically happens isn't zero realization, it's partial, inconsistent realization well below the modeled figure. The acquired company might get moved onto the platform's email system but not its cloud infrastructure. Redundant software licenses might get identified but never actually canceled because nobody owns the vendor relationship. The result, six or twelve months post-close, is a technology cost structure that's improved somewhat from the pre-deal baseline but falls well short of the full synergy figure that justified part of the deal's underwritten return.
This gap is rarely visible in isolation, since a partial synergy realization still looks like progress relative to the pre-deal baseline. It only becomes visible when someone specifically compares actual results against the original model projection, a comparison that surprisingly few funds run systematically across their portfolio, in part because doing so requires admitting that a number in the original deal model wasn't achieved.
Why This Matters Beyond a Single Deal
A pattern of unrealized technology synergies across multiple deals has a compounding effect on a fund's overall track record and its credibility with LPs, since it means the fund's actual value creation consistently underperforms its own underwriting in a specific, identifiable category. This is a fixable gap, but only if it's first measured, and measurement requires deliberately tracking realized synergies against the original model rather than simply moving on to the next deal once the current one closes.
Closing the Gap With Explicit Ownership
The fix is straightforward in concept: assign specific, named ownership for technology synergy capture as part of every deal's 100-day plan, with the original deal model's projected figure as an explicit target and a defined timeline for reaching it, tracked with the same rigor as any other post-close integration metric. This means someone, whether an internal operating partner or an external technology partner, is accountable for actually executing the consolidation, contract migration, and vendor rationalization that the synergy figure assumed would happen, rather than hoping it happens as a byproduct of general integration activity.
Funds that build this explicit ownership and tracking into their standard playbook consistently close a meaningfully larger share of the gap between projected and realized technology synergies than funds that treat the synergy figure as a one-time modeling exercise with no operational follow-through attached to it.
A Number Worth Tracking Going Forward
For funds willing to do the somewhat uncomfortable work of comparing actual results against original projections across their last several deals, the resulting realization rate, the percentage of modeled technology synergies actually captured, is one of the more useful diagnostic numbers a fund can generate about its own operational execution. A realization rate meaningfully below 100% isn't a reason for alarm, it's close to the industry norm without dedicated execution focus, but it is a clear, quantified case for building the ownership and tracking structure that closes the gap on every future deal.
How This Connects to the Rest of the Deal Model
Technology synergies are rarely the largest line in a deal model, revenue synergies and broader cost synergies usually dwarf them in absolute dollar terms, but they tend to be among the most reliably achievable if actually executed, since they don't depend on market conditions, customer behavior, or competitive dynamics the way revenue synergies do. A fund that consistently under-realizes this specific category is leaving behind value that was, in principle, entirely within its own operational control to capture, which makes it a particularly frustrating gap relative to synergy categories that carry genuine external risk.
What Good Tracking Actually Looks Like
Effective synergy tracking isn't complicated, it requires capturing the original modeled figure at close, assigning a specific owner and timeline for capturing it, and reviewing actual realized savings against that figure at defined checkpoints, thirty, sixty, and ninety days post-close, and then quarterly thereafter until the full projected synergy has been captured or a revised, justified figure has been documented. Funds that build this simple discipline into their standard post-close process consistently outperform funds that treat the synergy figure as a modeling exercise with no operational follow-through, and the gap between the two groups tends to widen with every additional deal a fund completes without closing it.
Sigma Technology Consulting, Inc.
25 Years of Experience, Vetting & Procuring Technology Vendors
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