M&A Day 1 Readiness Checklist: What to Verify
At a minimum, an acquirer must be able to answer these 10 questions “Yes” before being considered Day 1 ready:
- Can employees log in, connect, and access the systems they need to do their jobs?
- Can the business take orders, fulfill them, invoice customers, and collect payment without interruption?
- Do managers, sales representatives, executives, and others communicating on Day 1 know what to say and how to answer expected questions?
- Have Day 1 decision-makers, approval authorities, and signatories been identified, and do they understand their authority?
- Have all legal, regulatory, and financial requirements for operating the combined business been satisfied?
- Have all interim arrangements been defined, approved, assigned an owner, and given a clear end date?
- Does everyone know where to report a Day 1 problem and who is responsible for resolving or escalating it?
- Have the critical Day 1 processes and handoffs been tested from beginning to end?
- Have all items that will not be ready on Day 1 been identified, and have remaining risks been formally accepted?
- Are Day 1 communications approved, scheduled, and ready to be released?
Every workstream should pass a Day 1 Readiness Gate before close. The presentations in this section are examples that show whether Human Resources, Information Technology, Finance, Sales, Communications, Legal, and the IMO have completed the planning, testing, and preparation required to clear their gates. Each presentation features an integration timeline, a pre-close readiness checklist, Day 1 and Week 1 actions, function-specific deep dives, and a candid register of top risks. This consistent structure enables readiness to be judged the same way across the organization. The final slide for each workstream provides a clear conclusion about readiness. No percentages. No vague status. A workstream is either Ready or Not.
| Workstream | Deliverable / File | Summary |
|---|---|---|
| Human Resources | Human Resources M&A Day 1 Readiness | Confirms whether HR is prepared for Day 1 with reporting lines, benefits communications, HR systems, and support channels ready to go |
| Information Technology | Information Technology M&A Day 1 Readiness | Confirms whether employees can operate on Day 1 with secure access, email, connectivity, and collaboration tools supported by a war room ready to resolve issues quickly |
| IMO | Integration Management Office M&A Day 1 Readiness | Confirms whether the integration is ready to be executed as one coordinated effort with governance active, the war room operational, escalation paths clear, risks visible, and cross-functional dependencies actively managed |
| Communications | Communications M&A Day 1 Readiness | Confirms whether every audience will hear one consistent message with the narrative, guides, executive talking points, and external communications staged and approved |
| Finance | Finance M&A Day 1 Readiness | Confirms whether Finance is ready to execute without interruption from closing the books and processing payments to maintaining billing, collections, and treasury operations |
| Sales | Sales M&A Day 1 Readiness | Confirms whether Sales will maintain customer confidence and business continuity on Day 1 with key account outreach, customer messaging, and essential sales resources ready to support the transition |
| Legal | Legal M&A Day 1 Readiness | Confirms whether the transaction is legally ready to be comsummated with closing documents executed, regulatory requirements satisfied, key consents secured, and legal processes in place |
| All Workstreams | M&A Day 1 Test Run | Outlines the methodology for conducting Day 1 scenario test runs, including roles, processes, test cases, and gap-identification procedures |