When a private equity fund acquires an SME or mid-market company, it also acquires its ERP — with everything that entails: an ageing version, undocumented customizations, and a maintenance contract with a local integrator nobody wants to renegotiate. The IT system rarely sits at the heart of the investment thesis when pitching to the investment committee, yet it almost always ends up at the heart of the problems during the first 100 days post-closing.
The good news is that the most agile PE funds have built a genuine playbook on the subject. Understanding that playbook — whether you are the CIO of a portfolio company, the CFO of a fund holding, or a post-acquisition transformation consultant — allows you to avoid costly mistakes and to manage IT transformation as a value creation lever, not as an unwanted remediation project.
Why PE Funds Are Paying More Attention to ERP
ERP as a Valuation Infrastructure
A PE fund’s value thesis rests on two levers: EBITDA expansion and exit multiple improvement. ERP acts on both.
According to analysis by Pemeco Consulting, a well-deployed ERP typically generates 3 to 5% EBITDA uplift in the 12 to 18 months following implementation (Pemeco, ERP and Private Equity Valuation), through operational cost reduction, working capital release (inventory carrying costs fall by 10 to 20% on average), and improved commercial forecasting accuracy. At exit, a modern, documented ERP running on a supported version can represent +0.5x to +1.0x of multiple compared to an old or over-customized system, simply because it reduces the risk perceived by the next acquirer.
The average PE holding period has lengthened: it now exceeds six years at the median (CapitalPad, PE Holding Period Statistics 2026). Over that horizon, an ERP nearing end-of-life at the time of acquisition almost inevitably becomes a heavy migration to fund mid-hold, which depresses EBITDA at the worst possible moment.
An Invisible Asset That Can Destroy Valuation
An unsupported ERP — SAP ECC with no documented S/4HANA migration plan, an old Dynamics NAV instance, a legacy Sage version without a clear upgrade path — is not neutral in a sale process. The strategic acquirer or secondary fund conducting due diligence bakes the migration cost into their valuation model and reduces their offer accordingly. Typical red flags that drive down a bid: ABAP customization rates above 30%, absent functional documentation, a single internal ERP administrator, or a maintenance contract that ties the portfolio company to one integrator for another three years.
The 3 Standardization Models Seen in the Market
PE funds do not all take the same approach to IT. Three models coexist, each reflecting a different investment logic.
Model 1: Standardize Quickly (Active Buyout Funds)
This model is adopted by funds with short horizons (3 to 5 years) or those pursuing aggressive buy-and-build strategies. The principle is straightforward: impose a fund-reference ERP on all portfolio companies within 12 to 18 months. Subsequent tuck-in acquisitions are then onboarded onto that standardized foundation using pre-configured templates. Pemeco documents cases where tuck-in acquisitions were integrated onto the group ERP in under 90 days thanks to standardized templates (Pemeco, Value Creation Playbook).
The advantage of this model is portfolio-level cost reduction: a single platform, a single support team, a single version to maintain. The downside is the change management load, which can disrupt portfolio companies during the integration window.
Model 2: Consolidate at Hold (Passive or Organic Growth Funds)
Here, the fund retains each portfolio company’s existing ERP but adds a group consolidation layer on top — typically a BI tool or financial reporting module. The objective is not to standardize operational processes but to produce reliable group reporting without replatforming local systems.
This model makes sense for portfolios with very different business models or strong local regulatory constraints. Its main risk: the consolidation layer itself becomes technical debt, and manual reconciliations persist between systems.
Model 3: Prepare for Exit (Cloud-First SaaS Migration)
For portfolio companies targeting a sale in 18 to 24 months, the fund may decide to migrate to a cloud-native SaaS ERP — not to improve operations immediately, but to make the asset more attractive during the sale process. A SaaS ERP with no infrastructure to maintain, a clear vendor roadmap, and standard API connectors is a selling point in the data room. It reduces perceived risk for the acquirer and can shorten due diligence timelines by 20 to 35% according to Western Computer (Western Computer, Portfolio ERP Standardization).
IT Due Diligence: What PE Funds Actually Look At Before Acquisition
Technical due diligence is often the poor cousin of the acquisition process: two days on-site, a questionnaire sent by email, a response from the in-house IT manager without independent verification. The most rigorous funds have adopted a structured approach built around five key questions.
1. Which ERP, which version, under active support? The answer must include the vendor’s official end-of-support date. An ERP already off-support at closing is not a footnote — it is a migration to budget into the investment model.
2. What is the customization rate? The ratio of custom code to standard vendor code is the most reliable indicator of migration risk. Above 30% customization on a SAP or Microsoft Dynamics ERP, replatforming turns into a development project.
3. What are the real maintenance costs? Declared costs rarely include hidden licences, maintenance contracts, ad-hoc freelance consultants, and unconsolidated satellite subscriptions. Auditing actual commitments typically takes two weeks but can reveal 20 to 40% in undeclared costs.
4. What are the integrator dependencies? An exclusive, five-year, non-transferable maintenance contract with a single integrator is captivity. It limits the fund’s ability to redirect the IT strategy after closing.
5. Is the vendor roadmap compatible with the hold horizon? If the portfolio company is acquired for five years and the ERP reaches end-of-life in three, migration must be anticipated at deal structuring — not discovered mid-hold.
These five questions allow rapid qualification of IT red flags that could trigger a price adjustment clause or call the valuation into question.
The First 100 Days: ERP Decisions That Cannot Wait
The first month post-closing is the most critical window. Several decisions must be made before the portfolio company returns to cruising speed.
Day 1: cut access and secure the perimeter. In carve-out or partial divestiture transactions, the seller’s ERP access must be deactivated on closing day. Access rights for the selling parent’s users, automated data flows between systems, and shared IT services under a TSA (Transition Service Agreement) must all be mapped and controlled. For more detail on this phase, see our guide ERP and carve-out: securing Day 1 after a divestiture.
Month 1: audit the current state with real data. No decisions without data. The rapid audit should cover: ERP version and end-of-support date, contracted licences versus licences actually in use (gaps are common), master data quality (duplicate customers, inactive items, unused chart of accounts), and the current monthly close cycle time. This last indicator is telling: a close cycle exceeding 10 days generally signals low process automation and heavy Excel dependency.
Months 2–3: strategic decision. This is the moment to decide: retain the existing ERP, upgrade it, or migrate to a group ERP. This decision must not be deferred. Every month of indecision with two ERPs coexisting generates direct costs (dual maintenance) and indirect ones (manual reconciliations, rekeying errors, reporting delays). The classic trap is “we’ll revisit in two years”: two years later, the project is still “under study” and migration costs have risen.
For a structured decision framework comparing single instance, multi-instance, and hybrid approaches, read our dedicated analysis: Post-merger ERP in 100 days: single instance, multi-instance, or hybrid?
The ERPs Preferred by PE Funds in 2026: Why and Which Ones
PE funds have their preferences, and they converge around common criteria: native multi-entity architecture, out-of-the-box consolidated reporting, standard API connectors, and a stable vendor roadmap. The objective is to minimize dependence on a single integrator and to facilitate future acquisitions.
For growth SMEs (revenue under £50M / €50M): NetSuite and Odoo are the two reference platforms. NetSuite is historically the ERP of choice for US-based funds investing in EMEA portfolio companies: its native multi-entity module, real-time financial consolidation, and pure SaaS positioning meet group reporting requirements precisely. Odoo appeals more to funds acquiring industrial or e-commerce assets in Europe: its more accessible licensing model and dense integrator ecosystem allow rapid deployment.
For mid-market companies (£50M–£500M / €50M–€500M revenue): Microsoft Dynamics 365 Finance & Supply Chain Management is the most common choice, notably because the Microsoft partner ecosystem is mature across Europe and integration with productivity tools (Teams, Power BI, Azure) reduces integration overhead.
For large portfolio companies (above £500M / €500M revenue): SAP S/4HANA Cloud Public Edition is the standard in complex industrial groups. Its robustness across multi-country processes, simultaneous multi-standard accounting, and production management make it the only ERP capable of covering all requirements at that scale.
ERPs that deter acquirers: SAP ECC without a documented S/4HANA migration plan, closed vertical ERPs with no documented REST API, and above all in-house-built ERPs with no documentation or maintenance team. This last case is the most serious red flag: it means replatforming will be a complete rebuild, not a migration.
ERP Standardization ROI for a PE Fund
To illustrate the concrete impact, consider a representative example drawn from the case studies published by specialist PE integrators.
A fund holds three industrial portfolio companies: £120M / €120M aggregate revenue, three different ERPs (a SAP ECC instance, a customized Sage X3, a vertical industry ERP). The decision is made to migrate all three onto Dynamics 365 F&SCM over 24 months. Observed results:
- Monthly close cycle: from 12 days on average to 3 days — a 75% reduction (consistent with Pemeco benchmarks documenting 70% reductions in comparable cases)
- Licence and consolidated maintenance savings: approximately 8 to 12% of annual IT budget per portfolio company
- Ability to onboard subsequent tuck-in acquisitions in 60 to 90 days on the group platform, versus 9 months previously
At exit, the data room presents a group with a single ERP, audited accounts without manual restatements, and a documented IT roadmap. The next acquirer sees a computationally predictable asset, which reduces their risk premium and supports the exit multiple.
The role of the portfolio CTO or CIO — shared across multiple portfolio companies and funded by the fund — is precisely to orchestrate these migrations at scale and ensure that each portfolio company is “exit-ready” on the IT side before the sale process launches.
What Changes in the Relationship with Integrators
A PE fund that standardizes its portfolio on a common ERP fundamentally changes its relationship with integrators. It is no longer buying one-off projects — it is buying a recurring deployment capability. The integrators referenced by funds are those able to deliver pre-configured templates, experienced teams, and a reproducible onboarding methodology, not those who propose a from-scratch project with every acquisition.
For a CIO in post in a PE-backed company, this means the integrator choice is often predefined by the fund. The captivity risk is real: if the referenced integrator underdelivers or disappears, the fund must renegotiate its entire setup from scratch. Due diligence must therefore include an assessment of the integrator relationship’s robustness, not just the health of the ERP.
To go further on post-acquisition IT consolidation, read our complete guide: ERP and M&A: succeeding at post-acquisition IT consolidation and our analysis on ERP valuation and M&A IT due diligence at exit.
