The First 100 Days After an Acquisition

A Practical Finance Integration Roadmap for Group Finance Teams

Your acquisition has closed. The deal team is moving on.

For Finance, however, the real integration work is only beginning.

The newly acquired company now needs to enter your Group reporting environment — often within weeks.

But its chart of accounts may be different. Its month-end close may take ten days when the Group closes in five. Customer and supplier balances may not be fully reconciled. Intercompany positions may not match. Supporting documentation may be incomplete. And the local Finance team is still busy running the day-to-day business.

Meanwhile, the next Group close is approaching.

The CFO expects visibility. Auditors may need answers. Management wants to know whether the integration is on track.

And someone has been given responsibility for making all of this work.

If that person is you, the challenge is not simply knowing what should be done.

It is getting enough qualified Finance capacity to actually do it — while coordinating multiple stakeholders, meeting short deadlines and keeping business-as-usual Finance activities moving.

A structured 100-day Finance Integration roadmap can help bring that complexity under control.

The Real Finance Challenge Starts After Closing

Financial due diligence and post-acquisition Finance Integration solve two fundamentally different problems.

Before closing, the central question is:

What financial risks should we understand before completing this acquisition?

After closing, the question becomes:

Now that this company is part of our Group, how do we make its financial information reliable, understandable and compatible with the way our Group operates?

That second question creates a very different workload.

The acquired company may need to continue operating normally while simultaneously being integrated into:

• Group reporting
• Group accounting policies
• consolidation processes
• intercompany procedures
• month-end closing requirements
• working capital monitoring
• internal controls
• audit requirements
• management reporting
• Group systems or reporting tools

And all of this often needs to happen without materially increasing the local or Group Finance headcount.

This is why post-acquisition Finance Integration is as much an execution and capacity challenge as it is a technical accounting challenge.

If You Have Been Asked to Lead the Finance Integration

On an integration plan, the project may look straightforward. In practice, the person leading Finance Integration often sits at the centre of several parties with different priorities.

The CFO wants reliable numbers and visible progress.

Group Accounting wants the acquired entity aligned with Group policies and closing deadlines.

The consolidation team needs balances that reconcile.

The auditors require supporting documentation and explanations.

The local Finance team still needs to collect customers, pay suppliers, process payroll and run its normal close.

IT may be dealing with ERP access, data extraction or system migration.

Tax and Legal have their own post-closing workstreams.

The acquired company's management may hold critical historical knowledge that Group Finance does not yet have.

And senior management keeps asking one deceptively simple question:

Are we on track?

The Finance Integration Lead becomes the coordination point for a large number of issues — many of which were not visible when the original integration plan was prepared.

The constraint is often not knowing what needs to be done.

The constraint is having enough experienced people available to investigate, reconcile, document, follow up and resolve those issues within the required timetable.

A useful 100-day plan therefore needs to answer two questions simultaneously:

What needs to happen? And who has the capacity to actually execute it?

A 100-Day Finance Integration Roadmap

These phases should not be treated as rigid sequential steps. If a material issue is identified during week one, investigation should begin immediately. If an adjustment can be resolved during the first month, there is no reason to wait until day 61.

The roadmap establishes priorities and direction — not artificial boundaries.

Days 1–30: Gain Visibility

The first objective is not to redesign the acquired company's Finance function. It is to understand what you have acquired.

Group Finance needs sufficient financial data to establish where the company stands, how its accounting environment operates and where immediate attention may be required.

Start With the Core Finance Data

• Trial Balance at acquisition date and latest available month-end
• detailed General Ledger
• Accounts Receivable aging
• Accounts Payable aging
• bank statements and bank reconciliations
• intercompany balances and supporting schedules
• fixed asset register
• tax balances and relevant filings
• accruals and provisions
• suspense and clearing accounts
• chart of accounts
• existing monthly management reporting
• previous audit reports or management letters
• closing procedures and calendar
• key accounting policies

But receiving the files is only the beginning.

Can the information be reconciled and supported?

A Trial Balance can look perfectly clean while the underlying accounts contain old or unsupported items. An AR aging can show EUR 3 million of receivables without telling Group Finance how much is current, overdue, disputed, offset by unapplied credit notes or insufficiently supported.

An intercompany schedule can show a balance that does not agree with the counterparty's records. A bank reconciliation can technically exist while containing reconciling items that have been carried forward for months.

The objective of the first phase is to move from “We received the files” to “We understand the financial data well enough to identify where deeper investigation is required.”

Build an Initial Finance Risk Map

Workstream	Key Initial Question
Accounts Receivable	Are balances supported, collectible and properly aged?
Accounts Payable	Are liabilities complete, reconciled and correctly recorded?
Cash & Banks	Do accounting balances reconcile to bank records?
Intercompany	Do balances agree with counterpart entities?
Fixed Assets	Is the register complete and consistent with the GL?
Accruals & Provisions	Are material estimates adequately supported?
Tax Accounts	Do accounting balances reconcile to filings and payments?
Suspense Accounts	What is sitting in these accounts, and for how long?
Revenue & Expenses	Are there material cut-off or classification issues?
Closing Process	Can the entity meet the Group's timetable?
Group Reporting	Can local financial data be mapped reliably to Group requirements?

The result does not need to be a 70-page report. The Finance Integration Lead needs something operational: What is the issue? How significant could it be? Who owns it? What information is missing? What needs to happen next?

Do Not Wait Until Day 30 to Escalate Material Issues

The first month is about visibility, but material issues should be escalated as soon as they are identified. Difficulty producing a reliable customer aging does not automatically mean that the underlying ledger is incorrect, but it may indicate a data-quality, system or reconciliation issue requiring investigation.

Similarly, an intercompany difference may be a simple timing issue — or it may reflect transactions recorded differently by two entities.

Identify → Quantify → Investigate → Document → Resolve

Days 31–60: Investigate, Reconcile and Prioritise

By this stage, the integration team should have enough visibility to move from broad review into targeted investigation. This is usually where the workload increases significantly.

A single balance-sheet number can represent hundreds or thousands of underlying transactions, and almost every discrepancy can require coordination with someone else.

This is also the stage where many Finance Integration Leads discover that their original resource plan was too optimistic.

Accounts Receivable: What Is Really Behind the Balance?

The Accounts Receivable subledger should first be reconciled to the General Ledger. The aging can then be analysed to identify:

• overdue balances
• disputed invoices
• unapplied cash
• credit notes
• old open items
• balances with insufficient supporting documentation
• potential collection or provisioning issues

Illustrative Example

Assume a newly acquired company reports EUR 3.0 million of Accounts Receivable. A detailed review might reveal:

Category	Amount
Normal/current receivables	EUR 2.10m
Overdue but supported	EUR 0.50m
Under commercial dispute	EUR 0.25m
Unapplied payments / credit notes	EUR 0.10m
Requiring further documentation	EUR 0.05m
Total	EUR 3.00m

The objective is not simply to confirm AR = EUR 3 million. It is to understand what sits behind that number and what action each category requires.

Accounts Payable: Understand What the Business Actually Owes

• old unpaid invoices
• debit balances
• duplicate items
• disputed invoices
• payments not correctly allocated
• invoices recorded in incorrect periods
• differences between supplier statements and the accounting ledger

This can affect not only accounting reliability but also supplier relationships and short-term cash forecasting.

Cash and Banks: Establish Reliable Cash Visibility

• old reconciling items
• unrecorded bank transactions
• outstanding payments
• unidentified receipts
• restricted cash
• inactive bank accounts
• differences between bank access and accounting records

For Group Finance, reliable cash visibility is usually one of the earliest integration priorities.

Intercompany: One Balance, Two Sides

Intercompany is often one of the most operationally frustrating integration workstreams because resolution requires two sides of the transaction. A balance recorded by the acquired entity should be compared with the corresponding balance recorded by the Group counterparty.

• timing differences
• foreign exchange
• invoices recorded by only one entity
• different accounting periods
• management fees
• loans and interest
• cash transfers
• incorrect counterparties
• classification differences

The objective is not simply to produce an intercompany schedule. It is to establish a repeatable reconciliation process that works at every Group close.

Build One Action Tracker — Not Ten Separate Lists

Create a single Finance Integration Action Tracker. For each issue, capture at least:

• entity
• workstream
• issue
• estimated financial exposure, where measurable
• priority
• supporting information required
• action
• owner
• dependency
• target date
• status
• latest update

This becomes the operating document for the integration. The local team knows what it owes. Group Finance knows what remains outstanding. The Integration Lead knows what is blocked. External support, where used, works from the same priorities.

And the CFO receives a concise view of progress instead of being dragged into hundreds of individual accounting questions.

Prioritisation Matters More Than Perfection

Trying to resolve every historical accounting issue within 100 days is usually unrealistic — and often unnecessary.

Priorities should reflect both quantitative and qualitative materiality, together with the next critical reporting deadline.

• could materially affect Group reporting
• prevents consolidation
• affects cash visibility
• creates an audit concern
• affects a covenant calculation
• creates a tax or compliance exposure
• prevents reliable management reporting
• must be resolved before the next close

Lower-risk historical items can remain on the action tracker with an agreed remediation date. The objective is controlled transparency.

By the end of this phase, the Integration Lead should know what has been identified, what matters, what is being fixed, what remains open, who owns it — and whether anything threatens the next reporting milestone.

Days 61–100: Remediate, Standardise and Stabilise

By this point, the project should increasingly shift from discovery to remediation and sustainable integration.

The goal is not to make every historical imperfection disappear. It is to bring the acquired entity into a controlled Finance operating model that can function within the Group.

1. Resolve Priority Accounting Issues

• obtaining missing supporting documentation
• resolving customer and supplier open items
• clearing justified suspense balances
• reconciling intercompany differences
• documenting required accounting adjustments
• preparing proposed correcting journal entries where appropriate
• supporting their review and approval
• resolving bank reconciliation differences
• documenting unresolved items requiring longer-term follow-up

Every remediation action should have clear ownership and evidence of completion.

2. Map the Local Chart of Accounts to Group Reporting

The acquired company's chart of accounts rarely mirrors the Group structure perfectly. Local accounts may need to be mapped, split, combined, reclassified or supplemented with additional reporting dimensions.

The mapping should be tested using actual accounting data rather than treated as a theoretical spreadsheet exercise.

Can the acquired company's Trial Balance flow reliably into the Group reporting structure every month?

3. Bridge the Closing Gap

The acquired company may historically have produced reliable accounts on Day 10. The Group may require reporting by Day 5. Simply instructing the local Finance team to “close faster” does not solve the underlying problem.

• which activities drive the existing timeline
• which information arrives late
• where manual processes exist
• which reconciliations are performed after close
• which estimates can reasonably be introduced
• which responsibilities need to move
• whether temporary additional capacity is required

4. Stabilise Group Reporting

The objective is to make Group reporting repeatable and reliable.

• Group-format Trial Balance
• validated chart-of-accounts mapping
• reporting schedules
• intercompany reconciliation
• key balance-sheet reconciliations
• documented open issues
• variance explanations
• closing calendar
• clear responsibilities between local and Group Finance

A successful integration means the next close becomes less dependent on emergency intervention than the previous one.

The Hidden Constraint: Execution Capacity

The Group may know exactly what needs to happen. The Integration Lead may have a detailed roadmap. The CFO may have established clear priorities.

But somebody still has to do the work.

• review the ledger
• reconcile the customer aging
• investigate why the intercompany balance differs
• obtain missing supporting documentation
• follow up with the local controller
• update the action tracker
• prepare the reconciliation file — and do it again next week

Meanwhile, the existing Group Finance team still has to deliver monthly close, forecasting, audit, tax, management reporting, budgeting and business-as-usual activities.

Who is actually available to do it?

The Best Integration Model: Internal Leadership + External Capacity

No external Finance provider will understand the Group's context, policies, systems, stakeholders and historical decisions as deeply as the internal Finance team. That knowledge should remain at the centre of the integration.

External support should therefore not be positioned as a substitute for the internal team. Its role is to reinforce that team with additional qualified capacity around clearly defined workstreams.

For example, Group Finance may determine that Accounts Receivable requires detailed investigation. NEO can reinforce the team with professionals who analyse the aging, reconcile balances, investigate selected open items, organise supporting documentation and maintain the remediation tracker.

The internal team retains the context, methodology and decision-making authority. NEO helps execute the work.

The objective is not outsourcing the integration. It is giving the internal team more capacity to deliver it.

External Support Should Remove Work — Not Create More of It

The last thing an overloaded Integration Lead needs is another consultant to manage.

Effective support should take defined execution work off the internal team's desk while fitting into the Group's existing governance.

1. Group Finance defines priorities, materiality, methodology and governance.

2. NEO executes agreed review, reconciliation and remediation workstreams.

3. Issues requiring local knowledge are coordinated directly with relevant stakeholders within the agreed governance model.

4. Findings, reconciliations and proposed actions are documented for internal review.

5. Progress is maintained through the shared integration action tracker.

6. Only material issues, decisions and genuine blockers are escalated to the Integration Lead.

Senior Group Finance resources should spend their time making decisions and managing the integration — not chasing individual invoices or investigating hundreds of ledger entries.

What to Look for in a Finance Integration Support Partner

Rapid Deployment

Post-acquisition problems do not wait for a three-month recruitment process. Additional resources should be capable of mobilising quickly when the workload increases.

Flexible and Scalable Capacity

The project may require one Finance professional during one phase and several during an intensive reconciliation or closing period. Capacity should be adjustable to the actual workload.

Experienced Supervision

Execution capacity should be supported by experienced Finance professionals capable of reviewing work, challenging findings and identifying matters requiring escalation.

Ability to Work Under the Group's Framework

The support team should adapt to the Group's accounting policies, methodology, documentation standards, reporting timetable and governance — rather than impose a parallel integration model.

Multilingual Collaboration

Integration projects frequently involve Group Finance and local teams operating in different countries and languages. Direct multilingual communication reduces the burden on the Integration Lead.

European Time-Zone Compatibility

Overlapping working hours make direct discussions, issue resolution and day-to-day collaboration significantly easier.

Structured Delivery

The team should work through clear reconciliations, documentation standards, trackers, deadlines and escalation procedures.

Cost Discipline

Not every reconciliation requires senior consulting resources. The delivery model should combine appropriate senior oversight with efficient execution capacity.

Clear Governance

The Group retains control of accounting policies, materiality thresholds, accounting decisions, priorities, approvals and final reporting.

Nearshore Finance Capacity Built for International Teams

Because the objective is to operate as an extension of the internal Finance team, proximity matters — operationally, linguistically and in working hours.

NEO Expertise is based in Morocco and operates within European time zones, allowing our teams to collaborate with European Group Finance functions during the same business day.

Our teams can operate in English, French, Spanish and Arabic.

This multilingual capability can be particularly useful when Group Finance operates in English while local Finance teams, documentation or other stakeholders work primarily in French or Spanish.

Rather than creating another communication layer, NEO can work directly with relevant local stakeholders within the client's governance framework and report findings back to Group Finance in the required language and format.

This nearshore model combines:

• qualified Finance professionals
• rapid deployment
• multilingual collaboration
• European time-zone compatibility
• scalable resources
• experienced supervision
• cost-efficient execution

NEO Expertise acts as an extension of the Finance Integration team — not as a replacement for it.

A Practical Alternative to Temporary Internal Headcount

Post-acquisition integration creates a particular resourcing problem: the workload can be substantial, but temporary.

Recruiting permanent employees may be slow and economically inefficient. At the other extreme, using senior consulting resources for large volumes of reconciliations, supporting-document reviews and transaction-level investigation can become unnecessarily expensive.

A scalable Finance delivery team allows Group Finance to add operational capacity for the period in which it is actually required, while maintaining professional supervision, clear deliverables and defined governance.

Resources can scale up during intensive investigation or remediation periods and scale down as the acquired entity moves towards business-as-usual.

How NEO Expertise Reinforces Finance Integration Teams

NEO Expertise reinforces internal Group Finance teams during post-acquisition integration.

We do not seek to replace the Finance Integration Lead or take ownership of decisions that belong within the Group. The internal team knows the Group's policies, systems, stakeholders and business context better than any external provider.

Our role is to provide additional qualified execution capacity around clearly defined workstreams — allowing the internal team to remain focused on priorities, decisions and stakeholder management while NEO supports detailed analysis, reconciliation, investigation, documentation and follow-up work.

NEO Expertise has already developed solid practical experience supporting international Finance teams on assignments involving post-acquisition financial review, accounting analysis and remediation.

That experience has reinforced a simple principle: the most effective external team does not try to replace the internal Finance team. It makes that team more effective.

Depending on the project, our team can support:

• Trial Balance and General Ledger review
• balance-sheet account substantiation
• Accounts Receivable review and reconciliation
• Accounts Payable review
• bank reconciliation review
• intercompany reconciliation
• accounting data-quality analysis
• suspense and clearing account review
• identification and documentation of accounting adjustments
• chart-of-accounts mapping
• Finance Integration action tracking
• closing-process analysis
• Group reporting preparation support
• follow-up of remediation actions with local Finance teams

The delivery model can be adapted to a focused workstream, several simultaneous workstreams or broader support throughout the integration.

Your team brings the context. We bring additional execution capacity.

For Buy-and-Build Groups: Build the Model Once, Then Reuse It

For serial acquirers and PE-backed platform companies, Finance Integration should not be reinvented for every transaction.

• Standard Data Request
• Initial Finance Diagnostic
• Risk & Materiality Assessment
• Balance-Sheet Reconciliation
• Action Tracker
• Remediation
• Chart-of-Accounts Mapping
• Group Reporting Alignment
• Closing Stabilisation

Once the methodology, templates and governance are established, the same support team can become familiar with the Group's accounting policies, reporting structure, chart of accounts, materiality approach, closing timetable, documentation requirements and escalation process.

The next acquisition therefore does not start from zero. For a Group executing multiple bolt-on acquisitions, Finance Integration can gradually move from an improvised project to a repeatable operating capability.

What Should Success Look Like by Day 100?

Success does not mean every historical accounting issue has disappeared. A more realistic test is whether Group Finance can confidently answer:

• Do we understand the acquired company's material balance-sheet positions?
• Are major balances supported and reconciled — or clearly identified as open issues?
• Do we understand the key AR, AP, cash and intercompany risks?
• Is there one prioritised action tracker?
• Does every material unresolved issue have an owner and target date?
• Can the acquired company report according to Group requirements?
• Is the chart-of-accounts mapping functioning?
• Is the closing process moving towards the Group timetable?
• Are responsibilities between Group and local Finance clear?

Does the next close require less firefighting than the previous one?

If the answer is yes, the integration is moving from project mode towards controlled business-as-usual.

Do Not Let a Capacity Problem Become an Integration Problem

Most experienced Group Finance teams already understand what good financial reporting should look like.

The amount of work increases dramatically, while the deadlines do not move.

The person leading the Finance Integration must coordinate Group Finance, the acquired company, management, auditors and other stakeholders while simultaneously demonstrating progress to the CFO.

When the underlying accounting work turns out to be larger than expected, even a well-designed integration plan can become overloaded.

The answer is not always another methodology.

Sometimes the internal team simply needs more qualified execution capacity. Quickly.

NEO Expertise provides scalable, multilingual Finance Integration support for European and international groups that need additional resources to review, reconcile, remediate and integrate the financial operations of newly acquired businesses.

Based in Morocco, operating within European time zones and able to work in English, French, Spanish and Arabic, our teams are designed to reinforce international Finance environments rather than operate as a disconnected outsourcing layer.

Internally led. Externally reinforced.