Company Income Tax Rate in Nigeria: What Businesses Need to Know

The company income tax rate in Nigeria is one of the first figures business owners look for when estimating how much tax their company may owe. But knowing the percentage alone is not enough. The rate that applies to a business depends on how the company is classified under the current tax framework, and the amount eventually payable depends on taxable profit, not simply the money that enters the company’s bank account.

Since the Nigeria Tax Act 2025 took effect on January 1, 2026, businesses also need to understand the new distinction between small companies and other companies. The Act provides a 0% Companies Income Tax rate for qualifying small companies and a 30% rate for other companies, with a provision for the 30% rate to be reduced to 25% from a date that may be specified by presidential order on the advice of the National Economic Council.

That makes it important for business owners, accountants, finance managers, and CFOs to look beyond the headline percentage.

What Is the Company Income Tax Rate in Nigeria?

The company income tax rate is the percentage applied to a company’s taxable profits to determine its Companies Income Tax liability.

Under Section 56 of the Nigeria Tax Act 2025, the current framework provides:

Small companies: 0% Companies Income Tax.
Other companies: 30% Companies Income Tax from the commencement of the Act.
The Act provides for the 30% rate to be reduced to 25% from a date that may be determined by an order issued by the President on the advice of the National Economic Council.

This is an important change from the way many older Nigerian tax guides describe corporate taxation.

Older content may still refer to separate small, medium, and large company CIT rates. Businesses filing under the current framework should instead check the Nigeria Tax Act 2025 and the latest administrative guidance applicable to their filing period.

What Is the Current Company Income Tax Rate in Nigeria?

For the tax framework applicable from January 1, 2026, the headline rates are straightforward:

Company classification	Companies Income Tax rate
Qualifying small company	0%
Other companies	30%
Future reduction for other companies	25% when the prescribed commencement date is activated

The 0% rate for a small company does not mean that every company with a small turnover automatically qualifies.

A company must satisfy the statutory conditions for small-company classification.

Likewise, a company that is subject to the 30% rate should not assume that 30% of its total revenue is the amount it will pay in Companies Income Tax.

The tax rate is applied within the broader tax computation framework.

What Qualifies as a Small Company?

This is one of the most important questions for SMEs.

Under the Nigeria Tax Act 2025, a small company is defined by financial and business characteristics. The Act’s definition uses:

Gross annual turnover of ₦50 million or less.
Total fixed assets of not more than ₦250 million.
The business must not be one providing professional services.

All relevant conditions matter.

For example, a company cannot simply point to a turnover below ₦50 million and stop there. Its fixed assets and nature of business also need to be considered.

Professional-service businesses are specifically excluded from small-company classification under the Act, even where their turnover and assets would otherwise fall within the financial thresholds.

This means an accountant, consultant, law firm, or similar professional-services business should not automatically assume that a low turnover qualifies it for the 0% CIT treatment.

Why Company Turnover Does Not Equal Taxable Profit

One of the biggest mistakes businesses make is applying the company income tax rate directly to turnover.

Suppose a company generates:

₦100 million in annual sales.

It does not automatically mean that the company has ₦100 million in taxable profit.

The business may have incurred legitimate expenses in generating that income.

A simplified illustration is:

Business Income − Allowable Deductions and Adjustments = Taxable Profit

The applicable tax rate is then applied to the resulting taxable profit, subject to the specific provisions of the law.

This distinction is essential.

A company with ₦100 million in revenue and ₦20 million in taxable profit is in a very different tax position from a company with ₦100 million in revenue and ₦70 million in taxable profit.

The revenue figure helps determine the scale and, in some circumstances, classification of the business. It does not by itself determine the final Companies Income Tax bill.

How Is Company Income Tax Calculated?

The tax computation generally involves several stages.

Step 1: Determine the Company’s Relevant Income

Start by identifying income arising from the company’s business activities and other amounts that fall within the applicable tax rules.

This could include:

Sales revenue.
Service income.
Contract income.
Certain investment income.
Other taxable business income.

Step 2: Determine Allowable Expenses

The company then considers expenses incurred in generating its income.

Depending on the applicable rules, these may include legitimate business costs such as:

Employee-related expenses.
Rent.
Repairs and maintenance.
Interest and financing costs where allowable.
Professional services.
Other qualifying operating expenses.

Not every expense recorded in the financial statements automatically qualifies as a tax deduction.

Step 3: Make Tax Adjustments

The company may need to adjust accounting profit to arrive at the figure recognized for tax purposes.

This is where items such as non-deductible expenses, capital allowances, and other tax-specific adjustments can become important.

Step 4: Determine Taxable Profit

After the relevant adjustments, the company arrives at the profit figure used for the tax computation.

Step 5: Apply the Applicable Rate

The company then applies the relevant company income tax rate based on its classification and the applicable law.

For a qualifying small company, the CIT rate is 0%.

For another company subject to the standard rate, the current rate is 30% under Section 56 of the Nigeria Tax Act 2025.

Simple Example of Company Income Tax Calculation

Consider a hypothetical company that does not qualify as a small company.

Assume:

Annual relevant business income: ₦100,000,000
Allowable deductions and adjustments: ₦60,000,000
Taxable profit: ₦40,000,000

If the company is subject to the 30% CIT rate:

₦40,000,000 × 30% = ₦12,000,000

The simplified Companies Income Tax liability would therefore be ₦12 million, before considering other applicable taxes, levies, credits, incentives, or special rules.

This example is only an illustration. A real company tax computation can involve substantially more adjustments.

Does the 30% Company Income Tax Rate Mean Businesses Pay 34%?

Not necessarily.

This question has become particularly important under the Nigeria Tax Act 2025 because the new framework introduced a 4% Development Levy on assessable profits for companies covered by Section 59, with small companies and non-resident companies excluded from the levy.

The Development Levy is therefore something businesses need to consider separately when assessing their overall corporate tax burden.

It should not simply be described as though the statutory Companies Income Tax rate itself has become 34%.

For example:

Companies Income Tax is one charge.
Development Levy is another statutory charge.
The two can affect a company’s overall tax cost.
Small companies are excluded from the Development Levy under Section 59.

This distinction matters when communicating tax rates to business owners.

What Is the Development Levy?

The Nigeria Tax Act 2025 introduced a 4% Development Levy on assessable profits of companies chargeable under the relevant chapters, excluding small companies and non-resident companies.

The levy consolidates certain previous company-related levies into a unified framework.

For businesses, this means that calculating the overall tax burden requires more than looking at the headline CIT percentage.

A company may need to consider:

Companies Income Tax.
Development Levy.
VAT obligations.
Withholding Tax obligations.
PAYE obligations.
Other applicable taxes or sector-specific obligations.

Therefore, when a CFO asks, “What is the company tax rate?” the better question is often:

“What is our company’s total tax position under the current rules?”

Does Every Company Pay 30% Company Income Tax?

No.

Qualifying small companies have a 0% CIT rate under Section 56 of the Nigeria Tax Act 2025.

However, businesses should be careful about assuming they qualify.

The small-company classification is based on more than turnover.

Businesses should examine:

Annual gross turnover.
Total fixed assets.
Nature of the company’s activities.
Whether the business provides professional services.
Other applicable conditions under the legislation.

This is especially important for SMEs that are approaching the statutory thresholds.

A company can grow from a small operation into a business subject to the standard corporate tax rate, so its tax classification should be reviewed periodically.

What About Companies With Very High Turnover?

The Nigeria Tax Act 2025 also contains a minimum effective tax rate mechanism for certain large companies.

Where the applicable conditions are met, a company whose effective tax rate falls below the statutory minimum may have to pay an additional amount to bring its effective tax rate up to the required level.

The Act provides that this mechanism applies to:

A company that is a constituent entity of a multinational enterprise group meeting the relevant global revenue threshold.
Other companies with aggregate turnover of ₦50 billion or more in the relevant financial year, subject to the statutory conditions.

This is different from simply saying that every company pays 15%.

The minimum effective tax mechanism applies to companies meeting the specific criteria in the Act.

Large groups should therefore evaluate their tax position at group and entity level with appropriate professional advice.

Does the Company Income Tax Rate Apply to Foreign Companies?

Foreign companies can also have Nigerian tax obligations depending on their activities and connection with Nigeria.

The Nigeria Tax Act 2025 contains provisions dealing with non-resident persons and Nigerian-source income.

A foreign company should therefore not assume that being incorporated outside Nigeria automatically means it has no Nigerian tax exposure.

Factors that may need to be examined include:

The nature of the company’s Nigerian activities.
Nigerian-source income.
Permanent establishment considerations.
Significant economic presence.
Applicable tax treaties.
The company’s relationship with Nigerian entities.
The specific services or transactions involved.

Cross-border tax situations can be particularly complex, so foreign companies operating in Nigeria should obtain appropriate professional advice before deciding that no Nigerian corporate tax applies.

Are Professional Services Treated Differently?

Yes, professional services deserve particular attention.

Under the current small-company definition, businesses providing professional services are excluded from small-company classification.

This means that a professional-services company cannot simply rely on a low turnover figure to claim the 0% small-company CIT rate.

A business should therefore determine whether its activities fall within the statutory concept of professional services before applying the small-company exemption.

This is particularly relevant to:

Accounting firms.
Law firms.
Consulting businesses.
Certain engineering or technical professional practices.
Other businesses that may fall within the relevant professional-services category.

Where classification is unclear, professional tax advice is preferable to making an assumption based solely on turnover.

What Happens When a Business Uses the Wrong Tax Rate?

Using the wrong company income tax rate can result in an incorrect tax return.

For example, a company might:

Apply the 0% rate when it does not qualify as a small company.
Use an outdated company tax rate from an old tax guide.
Apply the correct rate to the wrong taxable-profit figure.
Ignore relevant tax adjustments.
Calculate only CIT while overlooking other applicable corporate taxes or levies.

These errors can result in underpayment or inaccurate reporting.

Depending on the circumstances, the company may later have to deal with:

Additional tax assessments.
Interest.
Penalties.
Requests for supporting records.
Tax authority correspondence.
Audit or compliance reviews.

The safest approach is to verify the applicable tax rules before preparing the final computation.

Common Mistakes Businesses Make With Company Tax Rates

Using Old Tax Guides

Nigeria’s corporate tax framework has changed over time.

A calculation based on an old article may no longer reflect the law applicable to the relevant year.

Applying the Rate to Revenue

CIT is not simply calculated as a percentage of gross sales.

Taxable profit and applicable adjustments matter.

Assuming Every SME Pays 0%

The small-company exemption has specific conditions.

Ignoring the Professional-Services Exclusion

Professional-services businesses should not automatically claim small-company treatment.

Confusing CIT With Total Corporate Tax

Companies may have other tax and levy obligations beyond Companies Income Tax.

Ignoring Tax Law Changes

Businesses should review tax rules when preparing returns rather than automatically carrying forward last year’s calculation.

Failing to Keep Supporting Records

Even an accurate calculation needs documentation to support the figures used.

How Businesses Can Stay Updated on the Company Income Tax Rate

Tax compliance teams can reduce errors by building a process around tax-rate verification.

Before preparing the company’s tax computation:

Confirm the tax law applicable to the relevant year.
Confirm the company’s classification.
Check turnover and fixed-asset thresholds.
Determine whether the company provides professional services.
Confirm the applicable CIT rate.
Check whether Development Levy applies.
Review any applicable tax incentives.
Check whether the company falls within the minimum effective tax rules.
Confirm the current filing and payment requirements.
Keep evidence supporting the classification and calculation.

This process is particularly useful for businesses whose turnover, asset base, or activities change significantly from one year to another.

Company Income Tax Rate vs Other Nigerian Tax Rates

Company Income Tax should not be confused with other taxes businesses may encounter.

Tax	General purpose
Companies Income Tax	Tax on taxable company profits
Development Levy	4% levy on assessable profits for companies within its scope
VAT	Tax on taxable supplies
Withholding Tax	Tax deducted at source on specified payments
PAYE	Collection of personal income tax from employment income
Capital Gains Tax	Tax on qualifying chargeable gains, subject to applicable rules

A company can therefore have several tax responsibilities at the same time.

Knowing the CIT rate is only one part of understanding the company’s total compliance position.

How FileAm Helps Businesses Stay Organized

Knowing the right tax rate is useful, but a correct tax computation still depends on having the right financial and supporting documents.

Businesses need to be able to locate records such as:

Financial statements.
Invoices.
Receipts.
Bank records.
Expense documentation.
Tax computations.
Previous tax returns.
Tax payment evidence.
Supporting documents for deductions and adjustments.

FileAm helps businesses centralize financial and compliance-related documentation so important records are easier to organize and retrieve.

Instead of searching through emails, spreadsheets, physical files, and scattered folders, businesses can maintain a more structured documentation system.

This can be useful when preparing tax computations, reviewing previous filings, responding to tax authority requests, or preparing for an audit.

Frequently Asked Questions About Company Income Tax Rate in Nigeria

What is the company income tax rate in Nigeria?

Under the Nigeria Tax Act 2025, the rate is 0% for qualifying small companies and 30% for other companies from the commencement of the Act. The Act provides for a future reduction of the 30% rate to 25% from a date that may be determined by presidential order on the advice of the National Economic Council.

What is the CIT rate for a small company?

A qualifying small company has a Companies Income Tax rate of 0% under Section 56 of the Nigeria Tax Act 2025.

What is the turnover threshold for a small company?

The Nigeria Tax Act 2025 defines a small company using gross annual turnover of ₦50 million or less and total fixed assets not exceeding ₦250 million, with professional-services businesses excluded from the classification.

Is company income tax calculated on turnover?

No. Companies Income Tax is generally determined based on taxable profits after the relevant tax adjustments rather than simply applying the tax rate to total revenue.

Is 30% the only company tax a business may pay?

No. Companies may have other obligations, including the Development Levy and taxes such as VAT, Withholding Tax, and PAYE, depending on their activities and circumstances.

Does a small company pay Development Levy?

The Nigeria Tax Act 2025 excludes small companies from the 4% Development Levy.

Can a professional-services company qualify for the 0% small-company CIT rate?

Professional-services businesses are excluded from the small-company classification under the current framework, so they should not claim the 0% rate solely because their turnover is below the financial threshold.

Will the company income tax rate become 25%?

The Nigeria Tax Act 2025 provides that the 30% rate for companies other than small companies will be reduced to 25% from a date determined by an order issued by the President on the advice of the National Economic Council. Businesses should therefore verify whether that reduction has formally taken effect for the relevant tax period before applying it.

Can foreign companies be subject to Nigerian corporate tax?

Yes, depending on their Nigerian activities, income, taxable presence, and the applicable provisions governing non-resident companies.

Why should businesses keep records of the tax rate they used?

Maintaining evidence of the applicable tax rules and company classification helps demonstrate how the tax computation was reached if the business later needs to explain its return.

Conclusion: Don’t Look at the Percentage Alone

The company income tax rate in Nigeria is only one part of a company’s tax calculation.

Under the current Nigeria Tax Act 2025 framework, qualifying small companies are subject to a 0% Companies Income Tax rate, while other companies are subject to a 30% rate from commencement, with a future reduction to 25% provided for under the Act once the prescribed commencement date is activated.

But determining the amount a company actually owes requires more than knowing the percentage.

Businesses also need to understand:

Their company classification.
Annual turnover.
Fixed assets.
Whether professional-services restrictions apply.
Taxable profit.
Allowable deductions and adjustments.
Development Levy obligations.
Minimum effective tax rules where applicable.
Current tax incentives.
Filing and payment requirements.

The best tax calculation is therefore not simply “profit × tax rate.”

It begins with correctly identifying the company’s tax position and then applying the rules that actually govern that company for the relevant year.

For businesses, accountants, and CFOs, keeping this information current is essential. Tax rates and rules should be verified for every filing period rather than copied blindly from previous years.

And just as important as getting the calculation right is keeping the documentation that proves how the calculation was made.