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How Private Equity Firms Use Expert Calls in Due Diligence

Expert calls give private equity firms the ground-truth intelligence that data rooms cannot provide — real customer sentiment, management quality signals, competitive risk, and regulatory trajectory. Here is exactly how PE teams use expert calls across every stage of due diligence, with a framework for structuring your expert call programme.
Written by
Pratyush Sharma
Published on
May 2026

The Problem With Data Rooms

Every PE deal comes with a data room. Financial statements, customer contracts, market studies, management presentations. And every PE analyst knows that data rooms are curated — they show what the seller wants you to see.

The questions that actually determine whether a deal is good or bad are rarely answered by data room documents. Is the management team as strong as the pitch deck suggests? Are customer retention figures accurate? Is the market growing the way the model assumes? What does the competition know that the target company doesn't want to share?

These questions require conversations. Specifically, conversations with people who have lived inside the market — former executives, customers, channel partners, regulators — people who will tell you the truth because they have no stake in the outcome.

This is why expert calls have become a standard component of PE due diligence.

What Expert Calls Actually Do in a PE Process

Expert calls are not a box-checking exercise. Done well, they are the highest-signal intelligence a PE team can generate during diligence.

1. Validating Revenue Quality

The data room says retention is 92%. But what does that mean? Are customers renewing because they love the product or because switching costs are prohibitively high? Are renewal conversations happening at the contracted rate or with significant discounting? Expert calls with former customers — and ideally churned customers — answer these questions with a level of candour that no vendor-provided data will ever deliver.

2. Assessing Management Quality

Management assessment is one of the hardest due diligence tasks and one of the most consequential. References provided by the company are not useful. Expert calls with people who have worked alongside the management team — former colleagues, direct reports, industry peers — give a three-dimensional picture that no pitch meeting can provide.

3. Understanding the Competitive Landscape

Competitors are rarely discussed honestly in data rooms. Expert calls with industry veterans reveal competitive dynamics that the target company either doesn't know or doesn't want you to know.

4. Pressure-Testing Market Size Assumptions

Most investment memoranda contain a TAM slide. Most TAM slides are too large. Expert calls with people who sell into the market every day — channel partners, distributors, sales leaders — quickly reveal whether the serviceable addressable market is as large as the model assumes.

5. Regulatory and Policy Risk Assessment

For deals in regulated sectors such as healthcare, financial services, or energy, understanding the real regulatory trajectory is critical. Former regulators and policy veterans can provide a candid assessment of where enforcement is heading that no public document will capture.

Nextyn's PE Due Diligence Framework: Five Expert Categories

Nextyn structures PE due diligence expert engagements around five expert categories, each designed to answer a specific set of questions.

Category 1: Former Executives of the Target
Former C-suite and VP-level employees who know the business from the inside — its real competitive advantages, its weaknesses, and whether the current management team's strategy is credible.

Category 2: Customer References (Blinded)
Active or former customers of the target who reveal real satisfaction levels, renewal intent, switching risk, and how the product compares to competitors in practice.

Category 3: Industry Operators and Competitors
People who work in the same space but not at the target. They provide the competitive context — how the target compares to peers and where the market is heading.

Category 4: Channel Partners and Distributors
Critical for B2B companies that sell through indirect channels. Channel partners know sales velocity, deal win rates, and whether the company's channel strategy is actually working.

Category 5: Regulatory and Policy Experts
Former regulators and government officials relevant to the target's industry. Essential for any deal where regulatory risk is a material consideration.

Case Study: How a Mid-Market PE Fund Changed Its Diligence Thesis

A mid-market PE fund evaluating a diagnostic services chain in India used Nextyn's expert call programme to examine state-level reimbursement risks and competitive dynamics that were not visible in the data room.

Through six expert calls — including former state health ministry officials and competing lab operators — the fund identified that a proposed regulatory change would significantly affect reimbursement rates for a key revenue category, and that two well-capitalised competitors were planning aggressive geographic expansion into the target's core markets.

These findings changed both the valuation discussion and the investment structure. The deal still closed — but with downside protection mechanisms and a revised thesis that the fund's investment committee had higher conviction in.

How Nextyn Delivers Expert Calls for PE Diligence

Nextyn's PE expert call process is built for the pace of live deals. After receiving your research brief, Nextyn delivers expert shortlists within 24–48 hours. Once you select which experts to engage, Nextyn screens for conflicts and briefs experts on MNPI protocols. Calls are often scheduled same-week for urgent deal timelines.

For PE teams under time pressure, Nextyn also offers a moderated expert call service in which Nextyn's analysts conduct the calls on behalf of the PE team — delivering structured intelligence without requiring analyst time on the calls themselves.

Frequently Asked Questions

How many expert calls does a typical PE deal require?
A standard single-asset due diligence engagement involves 8–15 calls. Complex cross-border deals or investments in highly regulated sectors typically require 20+ calls across multiple expert categories and geographies.

Can expert calls be combined with surveys for PE diligence?
Yes — and this combination is increasingly standard. Expert calls provide the qualitative depth while B2B surveys provide quantitative validation. Nextyn's EN++ platform supports both within a single engagement.

Is it legal to call former employees of the target company?
Yes. Speaking with former employees is a standard part of commercial due diligence. The key compliance requirement is that experts do not disclose material non-public information about their former employer. Nextyn's compliance framework governs every engagement to ensure these boundaries are respected.

Can Nextyn cover deals in Southeast Asia, India, and the GCC?
Yes. With offices in Mumbai, Bangalore, Jakarta, and Singapore, Nextyn has genuine on-the-ground expert networks in India, Indonesia, Vietnam, Thailand, the Philippines, and GCC markets. This emerging market depth is one of Nextyn's core differentiators from legacy expert networks.

How quickly can Nextyn support a live deal?
Expert shortlists in 24–48 hours and same-week calls are available as standard. For active deal situations, Nextyn can prioritise and deliver initial expert profiles within hours of receiving a brief.

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