The day a private equity deal closes, two clocks start. The sponsor's clock runs on the investment thesis: the value-creation plan, the hold period, the exit multiple. The company's clock runs on payroll, customers, and trucks that still have to roll Monday morning. The first 100 days decide whether those clocks synchronize or fight, and most of the friction is predictable.
Here is the operating checklist we work from, whether we are sitting on the company side or brought in by the sponsor.
Days 1-30: instrument the business
Stand up the cash discipline first. A 13-week cash forecast, live in week one. New leverage means new debt service, and the fastest way to lose a sponsor's confidence is a cash surprise in month two.
Build the reporting the sponsor actually expects. Monthly close in five to eight days, a board package with variances explained, KPIs tied to the thesis. A founder-run company that reported "when the accountant finished" now has an institutional audience with institutional standards. This transition, more than anything strategic, is what the CFO seat has to deliver immediately.
Reconcile the model to reality. The deal model made assumptions: pricing, volumes, working capital, capex. The first 30 days should produce an honest bridge between the model and what the operating data actually shows, because every month that gap goes unmeasured, it grows politically harder to surface.
Days 30-70: find the real levers
Contribution margin by customer, product, or route. Nearly every thesis assumes margin improvement; almost no acquired company can see margin below the blended line on day one. Build the view: the unprofitable tail it exposes is usually the fastest EBITDA in the entire plan.
Price realization and contract leakage. Stale price lists and unbilled escalators are the classic post-close discoveries, and the recovered margin needs no capex and no customers won.
Name the operating constraint. Whatever the growth thesis is, something physical paces it: a line, a fleet, a crew, a facility. Find the constraint before approving the capex plan, or the money buys capacity in the wrong place.
Days 70-100: lock the rhythm
A weekly operating cadence with the handful of numbers that run the business, and a monthly bridge from operations to the P&L that the whole leadership team can follow. The point is a management team that runs the system, not a finance function that narrates it.
An honest first reforecast. By day 100 there is enough actual data to reforecast the year credibly. Sponsors forgive a revised plan; they do not forgive being surprised in Q3.
The 100-day letter. One page: what the thesis assumed, what the data showed, what changed, what the next two quarters deliver. Writing it forces the synthesis, and it becomes the template for every board meeting after.
The pattern behind the checklist
Everything above is the same discipline: connect the operating reality to the financial statements fast, so decisions run on evidence while the organization still expects change. Companies that build that connection in the first 100 days tend to have boring hold periods and clean exits. Companies that skip it spend year two rebuilding trust.
We do this work from either side of the table, as the operating partner's boots on the ground or the founder's translator into sponsor expectations. If a deal just closed, or one is coming, start a conversation. The first 100 days only happen once.