Quick answer: In the first hundred days after closing, a buyer’s priorities run in a fixed order. Customers, key employees and cash come first, then reporting under the buyer’s own policies, then a period of learning how the business actually runs, and only then the changes the diligence findings justified. Communication to employees, customers and suppliers goes out on day one, and a short scorecard tracks actual results against the assumptions that supported the price.
Key points
- Retention comes before efficiency. The customers, managers and suppliers that carried the earnings are the ones most exposed in the first weeks, so early actions protect them and defer cost cutting.
- A buyer learns the business before changing it. A practice that looks wasteful from outside often exists because of a customer, a rule or a past failure the buyer has not yet seen.
- Cash control and a first monthly close under the buyer’s own policies come before any systems migration, because they show whether the numbers used in diligence still hold.
- Day one has a short checklist of its own: who is told what, who can sign, how payroll runs and where customer payments go. In an asset purchase the buyer’s entity often starts as a new employer, so these items cannot wait.
- A scorecard that compares actual results with the thesis behind the price turns the plan into a management tool and shows early when an assumption has failed.
What comes first after closing
The first hundred days follow one rule: protect the earnings the buyer paid for, then learn how they are produced, then change what the diligence findings justified. Early mistakes usually reverse that order, most often by cutting costs or merging systems before customers and key employees feel secure. The pressure to act is real, because the buyer has a model, lenders or investors who expect results, and a business it does not yet know well. The discipline is to spend the first weeks on retention, cash and reporting and to keep a short list of changes ready for when the picture is clear.
The reference point for every decision is the thesis from the diligence plan, the list of facts that had to be true for the price to work. The stages that precede closing are set out in the buyer’s roadmap.
A calendar of the first hundred days
The calendar below shows the order of work. It is drawn as an illustrative box because the periods depend on the business.
Illustrative example: An invented calendar for the first 100 days
The calendar shows the sequence of work for a business with steady monthly billing and no seasonal peak. The periods and activities are invented to show sequencing and are not benchmarks or a required schedule.
| Period | Focus | Output |
|---|---|---|
| Day 1 | Announce, secure and keep operations running | Messages sent in sequence, signatories and bank access in place, payroll and insurance confirmed |
| Days 2 to 14 | Meet the people and the largest accounts | Conversations with each key employee and top customer, retention terms in place where promised, a list of open questions |
| Days 15 to 30 | Cash and the opening position | Weekly cash view, closing statement prepared, first look at working capital against the target |
| Days 31 to 60 | First close and reporting | First monthly close under the buyer’s policies, reconciled to the diligence numbers, a standing monthly review with management |
| Days 61 to 90 | Early wins and process learning | Two or three low-risk improvements, such as purchasing terms or collections, agreed with management |
| Days 91 to 100 | Review against the thesis | Scorecard of actual versus assumed results, and decisions on larger changes for the next period |
What moves the order is the business itself. A seasonal company puts its first peak ahead of anything optional. A company whose contracts renew soon after closing puts renewal conversations ahead of reporting work. A company that depends on one large customer starts with that customer.
Priorities by stakeholder
Each group is asking a different question in the first weeks, and the buyer’s first action answers it.
| Stakeholder | The question they are asking | First action | Hold off on |
|---|---|---|---|
| Key employees | Are my job, pay and authority safe? | Individual conversations in the first days, retention terms honored, clear reporting lines | Reorganizing roles or titles before seeing them work |
| Other employees | Will anything change for me, and will I be paid on time? | A message in person where possible, uninterrupted payroll and benefits, a named contact for questions | Announcing cost programs without a plan |
| Largest customers | Will service, pricing and contacts stay the same? | A call or visit from the buyer, with the seller if the seller stays, and confirmed contacts | Price increases and terms changes, which invite a competitor’s call |
| Suppliers and vendors | Will I be paid, and on what terms? | Confirm payment terms and remittance details, introduce the new contact | Renegotiating terms before the relationships are understood |
| The seller, if staying | What is my role, and when does it end? | Agree the first weeks: introductions, history, a handoff schedule | Leaving authority ambiguous |
| Lenders and investors | Are results on plan? | Deliver the first reports on their schedule, with an explanation of differences from the model | Surprises and late reporting |
The seller’s role is the stakeholder item most often left vague. The guide to transition periods and post-closing roles describes the arrangements, and the guide to key-person risk explains why the handoff of relationships carries so much of the earnings.
Day one: the message and the operating checklist
The announcement runs from the people closest to the work outward: managers first, then all employees, then the largest customers and suppliers, then everyone else. Employees and customers hear from the buyer and the seller together, within hours of each other, because a rumor or a competitor’s call moves faster than a letter. The message says who owns the company now, what is not changing, who to call with questions and when the next update comes. It does not promise what has not been decided. The guide to telling employees and customers about a sale covers the same moment from the seller’s side.
Behind the message sits a short operating checklist: bank accounts and signatories, payroll and benefit enrollment, insurance certificates, customer payment instructions and vendor setup. These are confirmed before closing, because they cannot be fixed on the first morning with customers waiting. The details depend on structure. In a stock purchase the existing company, with its payroll, accounts and contracts, continues, and the changes are mostly about who signs. In an asset purchase the buyer’s own entity often starts as a new employer and a new contracting party, so payroll, benefits, insurance, permits and customer paperwork must exist in that entity on day one. The comparison of asset and stock sales explains the structures, and counsel confirms which items transfer and which are reissued.
Cash, the true-up and the first close
The finance work has a fixed order. Control of cash comes first: the buyer holds the bank relationships, sees balances every week and forecasts cash weekly until the pattern is understood. Next is the working capital true-up, in which actual working capital at the closing date is compared with the target in the purchase agreement and the difference is settled. The working capital peg guide explains the mechanism, and the buyer puts the agreement’s deadlines on the calendar because they run from closing.
Then comes the first monthly close under the buyer’s own accounting policies, reconciled to the numbers used in diligence. A difference between the two is timing, a policy choice or an error in the diligence numbers, and which one it is tells the buyer something about the reliability of everything else.
Other obligations add their own dates. An earnout usually needs separate books for the acquired business, kept under the policies written into the agreement. A seller note has a payment schedule and often ranks behind the senior lender. A lender’s covenant certificate has a due date. Each goes on the same calendar as the monthly close.
Integration order and early wins
Systems and processes are integrated in an order that protects revenue. Reporting and cash visibility come first. Systems that touch customers, such as order entry, billing and customer service, come last, and move only after the team has run old and new in parallel and the buyer has a way back. Payroll, benefits, insurance and purchasing are usually safe to consolidate earlier because customers do not see them.
Early wins are changes that cost the customer nothing and show the team that the new owner is competent: faster collections, cleaner purchasing terms, an overdue maintenance fix, a tool the staff asked for years ago. They are chosen with management, which gives managers a part in the new regime. Price increases, changes of vendors that affect delivery, and layoffs are not early wins. When the acquisition joins an existing company, the integration choices widen, and the guide to add-on acquisitions compares them.
Tracking the deal thesis
The diligence plan produced a short list of facts that had to be true. After closing, the same list becomes a scorecard with one line for each assumption.
| Thesis assumption | Metric | Baseline | Review | Action trigger |
|---|---|---|---|---|
| Customers stay after the owner steps back | Revenue by top account, month by month | Trailing revenue by account at closing | Monthly | A lost account or a sustained decline brings a call with that customer within days |
| Gross margin holds | Margin by product line or service | Margin in the diligence numbers | Monthly | A decline past the buyer’s tolerance prompts a review of pricing and costs |
| Working capital stays near the target | Receivables, inventory and payables days | Level in the purchase agreement | Weekly at first | A drift triggers a collections or purchasing review |
| Key employees remain | Departures and open roles among named people | The retention list at closing | Monthly | A resignation prompts a conversation about the whole group |
| Integration costs stay within budget | Spending against the plan | Budget approved before closing | Monthly | An overrun is reported to the lender or investors before it compounds |
A scorecard that shows an assumption failing early is worth more than a year-end review that confirms it late, because the buyer can still change the plan, brief its lender or use the protections negotiated in the agreement.
Frequently asked questions
What should a buyer do first after closing an acquisition?
Communicate and secure. Employees, key customers and suppliers hear from the new owner on day one, with a clear statement of who to call and what is not changing. Behind that, the buyer confirms bank access and signatories, payroll and benefits, insurance and the arrangements for customer payments, so that operations continue without a break.
Why do buyers wait to make changes after an acquisition?
The first weeks are when the buyer knows least and the business is most exposed. Customers and key employees are deciding whether the sale changes their position. Changes made before the buyer understands why a practice exists can remove something a customer values or a control that guards against a past problem.
How does a buyer work with the seller after closing?
As the agreements define it. Where the seller stays on, the transition, consulting or employment terms set the role, the reporting line and the end date. A buyer commonly uses the seller to introduce customers and explain history while keeping authority over decisions, and plans for the day the seller leaves.
What belongs on a deal thesis scorecard?
One line for each assumption behind the price: the metric that tests it, the baseline from diligence, the current figure and the point at which the buyer acts. Common assumptions cover revenue retained from the largest customers, gross margin, working capital, key employee retention and the cost of integration. The scorecard is reviewed on a fixed schedule.
Thinking about a sale or an acquisition?
The Impetus Group provides sell-side and buy-side M&A advisory, from preparation and buyer outreach to negotiation and closing. A transactional valuation is often the first step, scoped and priced separately.
Related guides
- What Happens to the Owner After a Business Sale: Transition, Consulting and Employment Terms: After closing, the owner’s role is set by contract: a short transition, a consulting agreement, employment or a board seat. See the terms that move pay and price.
- Key-Person Risk: How Owner Dependence Affects Valuation: How buyers measure owner dependence, why it lowers value and shapes deal structure, and what an owner can change in the years before a sale to reduce it.
- Add-On Acquisitions and Buy-and-Build Strategies: Platform vs Add-On: How buy-and-build works: platform and add-on roles, why platforms earn higher multiples, add-on valuation and synergies, integration choices and a seller’s view.
- How to Buy a Business: A Buyer’s Roadmap From Strategy to Close: How to buy a business, stage by stage: set the thesis, source targets, value, finance, write the LOI, run diligence, close and integrate, with a guide for each.
- Building a Buyer’s Diligence Plan: Priorities, Team and Sequence: How a buyer builds a due diligence plan: rank workstreams by the deal thesis, staff the team, sequence cheap tests first and set walk-away triggers in advance.
- Net Working Capital Peg: How the Working Capital Adjustment Works: The working capital peg sets the level of working capital a seller must leave in the business at closing. See how it is calculated, negotiated and adjusted.
This guide is general education. It is not a valuation opinion, appraisal, investment advice, or legal or tax advice. How these guides are made.