Contractor vs employee: the payroll difference every Nigerian employer needs to know

Why classification matters

In Nigerian payroll, the distinction between an employee and a contractor is not just a label. It determines which taxes you deduct, which statutory contributions you make, and what documents you issue after payment. Get it right and your payroll runs smoothly. Get it wrong and you expose your company to back-taxes, pension arrears, penalties, and potentially years of accumulated liability that the relevant agencies can recover with interest.

The risk is real because Nigerian tax and pension authorities look at the substance of the working relationship, not the title on the contract. If a worker functions like an employee, they are treated as one for compliance purposes, regardless of whether the contract says "independent contractor." Employers who misclassify workers, whether intentionally to reduce costs or simply out of oversight, face the same consequences: they owe every naira of PAYE, pension, NSITF, and NHF that should have been deducted and remitted from the start.

The payroll differences at a glance

The table below shows how payroll obligations differ depending on whether a worker is classified as an employee or a contractor.

For employees, the employer bears the administrative burden of computing PAYE through graduated tax bands, remitting pension to each individual's PFA, and making NSITF and NHF contributions. For contractors, the obligation is simpler but different: the employer deducts Withholding Tax (WHT) at source and remits it to the relevant tax authority, then issues a WHT credit note that the contractor uses to offset their own tax liability when filing their annual return.

How to determine whether someone is an employee or a contractor

Nigerian law does not provide a single bright-line test for worker classification. Instead, tax authorities and courts look at several factors together to determine the true nature of the relationship. The key indicators are as follows.

Degree of control. Does the company dictate how, when, and where the work is done, or only specify the end result? An employee works under the employer's direction. A genuine contractor decides their own methods and schedule.

Exclusivity. Does the worker provide services only to your company, or do they serve multiple clients? Exclusive engagement over a long period points toward employment, even if the contract says otherwise.

Provision of tools. Does the company supply the equipment, office space, and materials, or does the worker bring their own? Employees typically use the employer's resources. Contractors typically use their own.

Duration and continuity. Is the engagement open-ended or tied to a specific project with a clear end date? Indefinite engagements that renew automatically look more like employment than a series of independent contracts.

Integration into the business. Does the worker hold a job title, attend staff meetings, report to a manager, and appear on the company's organisational chart? The more integrated someone is into the day-to-day operations of the business, the more likely they are an employee in substance.

No single factor is decisive on its own. A worker who uses their own laptop but is otherwise fully integrated into the company, works exclusively for one employer, and has an indefinite engagement will almost certainly be treated as an employee by any regulator who investigates.

Withholding Tax on contractors

When you pay a contractor, you do not compute PAYE. Instead, you deduct Withholding Tax at source. The rate depends on the type of payment and on the contractor's category, for example whether they are an individual or a company, and some payments carry no withholding at all. Rates change from time to time, so take the current figure from your tax adviser or the tax authority rather than from a fixed table.

The process works as follows. When you make a payment to a contractor, you deduct the applicable WHT from the gross amount and pay the contractor the net. You then remit the WHT to the Nigeria Revenue Service (NRS, formerly FIRS) for companies, or the relevant state internal revenue service for individual contractors, by the 21st of the following month. After remitting, you issue a WHT credit note to the contractor. This credit note is important because the contractor uses it to offset their income tax liability when they file their own annual tax return.

Unlike PAYE, WHT is not the final tax. It is an advance payment on the contractor's eventual income tax. The contractor files their own return, calculates their total tax liability, and deducts the WHT credits they have accumulated during the year. If the credits exceed the liability, they can claim a refund or carry the excess forward.

One common mistake employers make is forgetting to issue the WHT credit note. Without it, the contractor cannot claim the credit and ends up paying tax twice on the same income. This creates disputes and erodes the working relationship, even though the legal fault lies with the employer for not issuing the note.

How SpireSlip handles both

SpireSlip supports both employee payroll and contractor payments in a single platform. When you add a worker, you classify them as either an employee or a contractor, and SpireSlip adjusts the entire payroll workflow accordingly.

For employees, SpireSlip computes PAYE using the current NTA 2025 tax bands, calculates pension at the correct employee and employer rates, and includes NSITF and NHF contributions. Each employee receives a detailed payslip after every payroll run.

For contractors, SpireSlip runs a separate payroll track with no PAYE or pension deductions. It applies the withholding tax type you choose for each contractor (individual, corporate or none), generates the payment advice note instead of a payslip, and produces the data you need to remit WHT and issue credit notes. There is no risk of accidentally applying pension or NSITF to a contractor payment, because the system enforces the classification from the start.