Guide

The First 100 Days: A Commercial Plan for New Ownership

Every hundred-day plan covers finance and operations: reporting packages, cost synergies, working capital. The commercial engine, how the company actually finds and wins customers, usually gets a placeholder that says assess later. Later arrives in month nine, growth is behind the model, and the assessment happens under pressure instead of on schedule. A commercial plan for the first hundred days costs nothing extra and changes the slope of the entire hold.

The macro case for urgency is not subtle. In S&P Global Market Intelligence's 2026 Private Equity Survey, 71 percent of general partners say they prioritize operational value creation over financial engineering, and Bain's Private Equity Midyear Report 2026 frames the return math as 12 is the new 5: deals that once needed roughly 5 percent annual EBITDA growth now need closer to 10 to 12. Nobody finds that growth in month nine.

Weeks one to four: establish the facts

Before changing anything, establish what is true. What does a customer actually cost, by channel, reconciled to real spend? Which channels carry the revenue, and which are rented versus owned? Who controls the ad accounts, the analytics, the website, the data, the company or its agencies? What do the agency and vendor contracts actually say? Where does revenue arrive untracked? This is fact-finding, not judgment, and it is deliberately fast: the goal is an honest baseline while the deal-close mandate for change is still fresh.

Weeks five to eight: diagnose and sequence

The baseline feeds a structured diagnostic across the commercial system, the business model, customer journey, channel economics, data infrastructure, team, and decision cadence, which is the commercial audit in full. The output that matters is not findings but sequence: the five things that matter most, in order, each with an owner, a number, and a date. Fifty findings in alphabetical order is a report; five priorities with owners is a plan.

Weeks nine to fourteen: ship the first fixes

The first wave is almost always the same three moves. Fix the measurement, so every later decision has instruments, source capture, call tracking, one reporting spine. Reallocate the existing budget against real channel economics, which routinely finds double-digit efficiency without new spend. And make the agency and vendor decisions the facts demand, including taking ownership of accounts and data where they live outside the company. None of this is glamorous; all of it compounds for the rest of the hold.

What not to do in the first hundred days

Do not rebrand, replatform the website, or scale paid spend before the foundation exists. Each is a common instinct, each feels like action, and each burns capital on top of a system that cannot yet measure whether it worked. The discipline of the first hundred days is sequencing: facts, then diagnosis, then the fixes that make every later investment measurable.

The quarter-two payoff

A company that runs this sequence enters its second quarter of ownership with numbers everyone believes, a budget allocated against evidence, owned infrastructure, and a board conversation about allocation rather than explanation. The one that deferred the commercial lane enters month nine asking why growth is behind the model, with eighteen fewer weeks of hold period to answer it.

FAQ

What should a 100-day plan include for marketing and commercial operations?

Three phases: establish the facts in weeks one to four, real acquisition cost by channel, channel mix, data and account ownership, agency contracts, and untracked revenue; run a structured commercial diagnostic and produce a sequenced plan with owners in weeks five to eight; and ship the first fixes, measurement, budget reallocation, and agency or vendor decisions, in weeks nine to fourteen.

Why is the commercial engine usually missing from 100-day plans?

Post-close planning is typically led by finance and operations, so reporting packages and cost programs get detailed plans while customer acquisition gets a placeholder to assess later. The assessment then happens in month nine under growth pressure instead of on schedule, with a large part of the hold period already spent.

What should you not do with marketing in the first 100 days after an acquisition?

Do not rebrand, replatform the website, or scale paid spend before the measurement foundation exists. Each feels like decisive action, and each burns capital on a system that cannot yet tell you whether the investment worked. Foundation first, then the visible moves.

What does a commercial 100-day plan deliver by the second quarter?

Numbers leadership and the board both believe, budget reallocated against real channel economics, company-owned accounts and data, and a sequenced set of commercial priorities with named owners already in motion, which changes the slope of the remaining hold rather than the first quarter alone.

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