Key takeaways
- Add-ons were about 73 percent of US PE buyouts in 2024. Integration, not the deal, is where value is lost.
- Commercial integration is usually scheduled for later because the 100-day plan is built around finance, systems and people.
- Write the commercial plan before close and extend the platform's existing standard rather than building from zero.
- Sequence: benchmark by day 14, Foundation by day 45, process by day 75, combined-territory pipeline by day 100, plan review at day 90.
- Document the founder's relationships in week two and make them tier one of the account list inside the standard process.
Why does the commercial function get integrated last, if at all?
Because the 100-day plan is written around finance, systems and people, and assumes the platform CEO has bandwidth to run it. Commercial integration is scheduled for later, and later rarely comes.
Add-ons were about 73 percent of US private equity buyout transactions in 2024, up from under half a decade earlier [1]; PitchBook puts them near 74 percent of North American deal activity [2]. Integration is where the strategy fails, and three failure modes account for most of it: management bandwidth, systems and data fragmentation, and synergy timing mismatch [1]. Industry research puts the overall M&A failure rate between 70 and 90 percent, depending on how it’s counted [3].
~73%
of US PE buyout transactions in 2024 were add-ons. Cherry Bekaert, via V7
70–90%
estimated M&A failure rate, depending on how it’s counted. Permanent Equity
Day 90
when a plan-of-record review should test whether integration still matches the thesis. E78 Partners
Source type: PE advisory and operator commentary citing Cherry Bekaert and PitchBook data. Timeframe: 2024–2026.
In an industrial field service platform, the commercial side of each add-on is a founder’s relationships, a website nobody has touched since the rebrand, a spreadsheet of deals and a different idea of what a qualified opportunity is. None of that appears in the integration workstreams, so the platform inherits five of everything.
When should the commercial 100-day plan be written?
Before close. Firms that succeed build the 100-day plan around the deal’s value drivers before signing, and a commercial standard already running at the platform is the fastest thing to extend.
CohnReznick’s analysis of add-on performance is direct: integration failures trace to a lack of 100-day plans and integration leadership, and successful firms build the plan before closing, focused on the value drivers of the deal [2]. BDO reaches the same conclusion from the risk side, noting that waiting for close to think about integration is a costly mistake and that the post-acquisition plan has to be repeatable with each add-on [5].
Repeatable is the operative word. If the platform already has one ICP definition, one messaging standard, one deliverability setup and one deal process, the add-on inherits them. If it doesn’t, each close starts the commercial build from zero.
What should happen in the first 100 days, commercially?
Benchmark and inventory in the first two weeks, install the platform’s commercial foundation by day 45, then run the standard deal process and combined-territory outbound to day 100, with one report to the fund.
Window
What gets done
What the fund sees
Days 0–14
Benchmark and inventory
Benchmark and inventory
P.R.O. score for the add-on. Inventory of domains, website, CRM, lists, templates and current pipeline. Key-relationship map.
Where the add-on sits against the portfolio standard
Days 15–45
Foundation
Foundation
ICP merged into the platform’s. Messaging aligned to the platform’s claims. Sending domains authenticated and warmed. Search and AI discovery fixed on the inherited site.
Foundation milestones: ICP, messaging, deliverability, visibility
Days 46–75
Process
Process
Add-on’s deals mapped onto the platform’s stages and handoffs. Qualification and proposal standards adopted. Weekly review joined.
Process milestones: stages defined, handoffs documented, review running
Days 76–100
Pipeline
Pipeline
Combined-territory account list built. Buying groups mapped. Outbound sequenced around plant triggers. First meetings booked.
Accounts, buying groups, outreach live, meetings
Around day 90, run the plan-of-record review E78 describes [4]: is the commercial work still aligned to why the deal was done? If the thesis was cross-selling the platform’s services into the add-on’s accounts, the day-90 question is whether those accounts are in the list and the sequences say so.
What about the acquired founder's relationships?
Document them in the first two weeks, map them into the account list, and give them a defined role in the process. A relationship that lives only in one person’s phone is a key-person risk, not an asset.
The acquired founder was usually sold a partnership and handed an integration plan [1]. The commercial version of that friction is asking them to put twenty years of relationships into a CRM they didn’t choose. The alternative is to treat the relationships as the first tier of the account list, with the founder as named owner on those accounts inside the standard process, and the platform’s outbound covering everyone else. The relationships keep working. They just stop being the only thing that does.
What should the fund see at day 100?
The add-on on the same dashboard as every other company: its score, its Foundation, process and pipeline milestones, and an operator’s read on the next move. Deal data stays with the company.
Integrate commercially later
Commercial standard from close
Commercial functions at the platform after three add-ons
Four
One
Reporting to the fund
Four formats
One Readout
Cross-sell into acquired accounts
Depends on the founder
In the list by day 100
Key-person risk
Carried to exit
Documented in week two
What a buyer can diligence at exit
Relationships
A documented, repeated process
This is what the Portfolio Program’s 100-day commercial onboarding is for: a playbook that runs the same way at every close, so each add-on inherits a working commercial function instead of inventing one.
Frequently asked questions
What share of private equity deals are add-ons?
About 73 percent of US PE buyout transactions in 2024, according to Cherry Bekaert, and roughly 74 percent of North American deal activity, according to PitchBook.
About 73 percent of US PE buyout transactions in 2024, according to Cherry Bekaert, and roughly 74 percent of North American deal activity, according to PitchBook.
Why do add-on integrations fail?
Three failure modes account for most: platform management bandwidth, systems and data fragmentation, and synergy timing mismatch. Industry research puts overall M&A failure between 70 and 90 percent.
Three failure modes account for most: platform management bandwidth, systems and data fragmentation, and synergy timing mismatch. Industry research puts overall M&A failure between 70 and 90 percent.
When should the commercial 100-day plan be written?
Before close. Successful firms build the plan around the deal’s value drivers before signing, and a repeatable commercial standard at the platform is the fastest thing to extend to a new add-on.
What should happen commercially in the first 100 days?
Benchmark and inventory by day 14, Foundation (ICP, messaging, deliverability, visibility) by day 45, the standard deal process by day 75, combined-territory outbound with first meetings by day 100, and a day-90 plan review.
Benchmark and inventory by day 14, Foundation (ICP, messaging, deliverability, visibility) by day 45, the standard deal process by day 75, combined-territory outbound with first meetings by day 100, and a day-90 plan review.
How does FieldForge support add-on onboarding?
Through the Portfolio Program’s repeatable 100-day commercial onboarding, included at three or more portfolio companies, with each add-on reported on the same Fund Readout as the rest of the portfolio.
Through the Portfolio Program’s repeatable 100-day commercial onboarding, included at three or more portfolio companies, with each add-on reported on the same Fund Readout as the rest of the portfolio.
Related reading
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Sources
- 1. https://www.v7labs.com/blog/buy-and-build-add-on-integration-private-equity
- 2. https://cohnreznick.com/insights/how-top-pe-firms-are-winning-with-add-on-acquisitions
- 3. https://www.permanentequity.com/content/when-to-buy-the-add-on-question
- 4. https://e78partners.com/?p=25108
- 5. https://www.bdo.com/insights/industries/private-equity/navigating-the-risks-of-post-acquisition-add-on-integration
Wesley Cowley, Founder and CEO, FieldForge Partners
Wesley spent 15 years as a mechanical engineer in field operations, then held VP and SVP commercial roles inside PE-owned industrial platforms through multiple sponsor cycles. FieldForge installs commercial systems for industrial field service companies and benchmarks commercial maturity across PE portfolios. More about Wesley.