Payroll Fraud in Nigeria: Common Risks and How Businesses Can Prevent Them

Payroll fraud in Nigeria is usually one of the last things businesses pay attention to and that sometimes makes it a prime target. Payroll often accounts for a large share of operating costs, in service-based businesses it can run well above 40 percent, which makes it one of the biggest items on the books.

Unlike procurement fraud, which usually surfaces through a missing delivery or a mismatched invoice, payroll fraud can run quietly for months because nothing about it looks out of place.

This guide shows you how payroll fraud happens in Nigeria, how to spot it early, and what controls protect your business.

What Is Payroll Fraud?

Payroll fraud occurs when someone manipulates payroll to move money the business did not authorise. It can involve inflated payments, fake employees, or redirected salaries. Most times, it is an inside job because the person already knows the process and has access.

Phishing, fake contractor payments, and vendor invoice fraud are real threats. But most payroll losses come from employees or admins with payroll access. As your business grows, informal processes that worked with 10 staff can break down at 50.

Common Types of Payroll Fraud in Nigeria

These fraud patterns show up in businesses of every size. Most do not need technical skill, just access and weak checks:

1. Ghost Employees: A ghost employee is a name on the payroll with no real person behind it. It may be entirely fabricated or belong to a former employee who was never properly offboarded. If payroll removal and access revocation do not happen on the final day of employment, salaries can continue to be deposited into a bank account controlled by someone else.
2. Falsified Overtime Claims: Overtime fraud occurs when hours never worked are submitted and approved. The risk is higher when overtime authorisation happens through informal messages or verbal sign-offs, especially for shift workers, field staff, or project teams where hours are hard to verify against output.
3. Unauthorised Salary Increases: A salary adjustment made outside the formal review cycle without required management approval is an unauthorised increase. The risk is particularly high when the person managing employee records can also run payroll.
4. Manipulated Bank Account Details: An administrator or employee may change a bank account number shortly before a pay run. The payroll figures still look correct, but the money is sent elsewhere. Without a process that verifies every change to bank details before payment, this can go undetected.
5. Duplicate Salary Payments: Processing the same payroll twice or paying an employee through two channels in the same cycle creates duplicate disbursements. Manual payroll or disconnected systems increase this risk when payments are not followed by reconciliation.
6. Payroll Data Manipulation: This includes adjusting salary figures, inflating reimbursements, or manipulating tax and pension deductions. One serious example is under-remitting statutory deductions: PAYE or pension is deducted from salaries as normal, but a lower amount is remitted to the relevant authority, and the difference is redirected.

Warning Signs of Payroll Fraud Nigeria Businesses Should Watch 

1. Payroll Costs Rising Without your Headcount Growth

If the salary bill increases while the headcount stays stable, investigate. A month-on-month comparison of payroll spend against active headcount can help identify unexplained growth and possible ghost employee activity.

1. Frequent Last-Minute Payroll Changes

New bank details, revised figures, or additional names submitted close to processing time are harder to scrutinise. They are not automatically fraudulent, but recurring late changes should be documented and reviewed.

1. Bank Account Changes Without Verification

Every employee bank-account update should require independent verification before a live pay run. Direct confirmation through a channel outside the payroll team’s control adds an important check.

1. Overtime Patterns With No Operational Explanation

If overtime is concentrated among a small group without a documented project, deadline, or business event to explain it, cross-check claims against attendance, output, or project records.

1. Missing or Informal Approval Records

Every salary addition, change, and disbursement should have a signed, dated, traceable approval record. WhatsApp messages, verbal conversations, or missing records create gaps in the audit trail.

1. Duplicate Employee Records

Different name variations, staff IDs, or bank accounts for the same employee require investigation. It may be an administrative error or a sign of a ghost employee scheme.

Payroll Internal Controls That Close the Gaps

The key is a process where more than one person reviews the numbers before money moves. Payroll compliance and fraud prevention rely on many of the same controls.

1. Segregation of Duties

The person who sets up a payroll run should not approve it or release the payment. Where teams are small, the minimum fix is to have final payment approval handled by someone outside the payroll function.

1. Multi-Level Approval Workflows

Every payroll run should require documented sign-off from more than one person. Salary changes, new hires, exits, and amendments should also require authorisation from someone who did not make the change. Approval by WhatsApp alone is not a reliable audit trail.

1. Role-Based System Access

System permissions should match job responsibilities. The administrator managing employee records should not authorise payments, the payroll processor should not freely edit salary figures, and an approved payroll run should not be editable by the approver.

1. Verified Employee Records

Every active payroll entry should correspond to a current, verified employee, with up-to-date employment records and verified bank details. Cross-checking pension deduction records with PenCom can also help verify employees and confirm that statutory obligations are being met.

1. Payroll Audit Trails

Every payroll change should be timestamped, attributed to a specific user, and retained in a log that cannot be edited after the fact. If you cannot identify who changed a bank account or salary figure and when, you are missing a basic fraud-detection mechanism.

How Payroll Audits Reduce Payroll Fraud Risks

A payroll audit is a scheduled, independent review of payroll data against HR records, approval logs, and statutory remittances. Its purpose is to verify that payments were authorised and deductions were actually remitted.

A rigorous payroll audit should cover:

1. Active employee verification: confirm every person on payroll is currently employed, their role matches their documented grade and salary band, and their bank details are verified.
2. Statutory deduction reconciliation: verify PAYE, pension, NSITF, NHF, and ITF deductions are correctly calculated and actually remitted to the relevant authorities.
3. Payroll change-log review: match additions, amendments, and deletions to corresponding approval records.
4. Overtime and allowance verification: cross-check claims against attendance records, project logs, or manager confirmations.
5. Payroll data protection review: confirm salary information, bank details, and tax data are handled in line with NDPC guidelines on employee data privacy.

For businesses with fewer than 50 employees, a formal payroll review every quarter is a reasonable minimum. Larger businesses or those that have experienced a payroll incident may need monthly reviews.

Best Practices for Preventing Payroll Fraud

Payroll fraud prevention works best when controls are built into the process.

1. Offboard completely and immediately: Deactivate a departing employee’s payroll record on the final day and revoke relevant access.
2. Review payroll before the money moves: A pre-payment review by someone outside payroll processing can catch anomalies before they become transfers.
3. Review payroll policy: Controls that worked for a 15-person team may need to change at 50 or 100 employees.
4. Build awareness: Payroll staff should understand what fraud looks like and feel confident raising concerns.
5. Create a safe reporting channel: An anonymous reporting channel can help concerns reach someone senior and outside the payroll function.

Strengthen Payroll Security with Eazipay

A business where one person runs payroll, approvals happen over WhatsApp, and no one reviews the numbers before payment is high-risk because of its structure, not necessarily its people.

Eazipay is built with controls that address these gaps. Role-based access separates payroll data entry from payment release. Changes such as salary amendments, bank-account updates, and new employees are logged with a timestamp and user ID. Approval workflows require sign-off before a pay run processes, while PAYE, pension, and NSITF processes are handled automatically.

Finance teams have payroll reports, and audit trails remain retrievable in one system rather than scattered across emails and chat histories.

Book a demo to see what a secure payroll system can look like for your business.

Frequently Asked Questions

What is payroll fraud?

Payroll fraud is any deliberate manipulation of payroll to redirect or inflate unauthorised payments. It includes ghost employees, falsified overtime, unauthorised salary adjustments, manipulated bank details, and duplicate payments. It is often committed by people who already have legitimate payroll access.

What are the most common types of payroll fraud in Nigeria?

Ghost employees and bank account manipulation are common schemes, particularly where payroll is not regularly reconciled against HR records or account changes are not verified. Falsified overtime, unauthorised salary increases, and under-remittance of statutory deductions can also occur where one person controls too much of the payroll process.

How can businesses detect payroll fraud?

Regular payroll audits should verify the active employee list against HR records, review payroll changes, and reconcile deductions against statutory remittances. Between audits, rising payroll costs without corresponding headcount growth are an important warning sign. Full audit trails make it easier to trace what changed, when, and who made the change.

How often should payroll be audited?

Businesses with fewer than 50 employees should conduct a formal payroll review at least quarterly. Larger businesses, or those with a recent incident or high-risk environment, should consider monthly reviews. The reviewer should be independent of payroll processing.

Can payroll software help prevent payroll fraud?

Yes. Payroll software with role-based access, approval workflows, and audit trails removes many of the conditions payroll fraud relies on, including unchecked access and undocumented changes. Software is a control, not a guarantee, so it works best alongside regular audits and clear internal policies.