Internal Controls Every Growing Company Needs

In a start-up, the founder sees every payment. By the time a company has fifty or a hundred people, several entities or a second country, that is no longer possible — and informal trust becomes a risk. Internal controls replace “I know everyone” with a system that works even when you are not looking.

Good controls are not about bureaucracy. They exist to make sure that transactions are authorised, complete, accurate and recorded — and that mistakes or fraud are caught quickly. Here are the eight we consider non-negotiable for any growing company.

1. Segregation of duties

No single person should be able to initiate, approve, record and reconcile the same transaction. The classic example: whoever creates a new vendor in the system should not be able to approve payments to that vendor. Where the team is too small for full segregation, add a compensating review by someone independent.

2. A clear approval matrix

Document who can approve what, up to which amount: purchases, contracts, payments, discounts, credit notes, hires. Configure it in your systems where possible. A written delegation of authority prevents both bottlenecks and “I thought I was allowed”.

3. Vendor master data control

Changes to supplier bank details are one of the most exploited weaknesses in business — including through business email compromise. Require independent verification (a call-back to a known number) for every new vendor and every change of bank account, and review vendor master changes regularly.

4. Purchase-to-pay three-way match

Pay only when the purchase order, goods receipt and invoice agree. Exceptions should be visible and approved. This single control prevents a wide range of overbilling, duplicate and fictitious-invoice schemes.

5. Monthly reconciliations with evidence of review

Bank, intercompany, receivables, payables and key balance-sheet accounts should be reconciled every month, with differences explained and the review signed off by someone other than the preparer. Unreconciled balances are where problems hide.

6. User access management

Give people the access their role requires — no more. Remove access promptly when people leave or change roles, and review privileged and sensitive access at least quarterly. This is also the foundation of IT general controls if you ever enter SOX scope.

7. Journal entry controls

Manual journal entries, especially near period end or posted by senior staff, carry higher risk. Require supporting documentation and an independent review above defined thresholds, and analyse entries periodically for unusual patterns.

8. A speak-up channel and a culture that uses it

Tips are the most common way fraud is detected. A confidential reporting channel, a clear non-retaliation policy and visible follow-up turn employees into your best control. In the EU, many organisations with 50 or more employees are now legally required to have one.

Making controls stick

• Document briefly. A one-page process narrative and a simple risk & control matrix are enough to start.
• Assign owners. Every control needs a person accountable for performing it and keeping evidence.
• Automate where you can. System-enforced controls are cheaper and more reliable than manual ones.
• Test periodically. A control that is not tested is an assumption.

Controls should grow with the company: light and practical at first, more formal as you add entities, investors or a listing. If you want an independent view of what you have today, our internal controls review maps gaps and gives you a prioritised, realistic remediation plan.