Here’s a question most business owners don’t think to ask: what if my company makes a loss? Do I still pay tax?

The intuitive answer is no. No profit, no tax. Simple.

But Nigeria’s tax system doesn’t always follow intuition. Enter minimum tax—the rule that says even if you make a loss or very low profit, you still contribute something to the government.

The 2026 reforms completely overhauled how minimum tax works. What used to be a simple 0.5% charge on turnover is now a layered system with different rules for different sizes of companies. And for the first time, very large companies face a completely different minimum tax regime aligned with global standards under the Pillar Two framework.

Let’s walk through what minimum tax means in 2026, who it applies to, and how to calculate what you owe.

What Minimum Tax Actually Is

Minimum tax is exactly what it sounds like: the lowest amount of tax a company must pay in a year, regardless of whether it made a profit.

The logic is straightforward. Tax authorities don’t want companies trading year after year, declaring losses, while owners live well and business continues. Minimum tax ensures every company contributes something to the system, even in lean years.

But “minimum” doesn’t mean “small” anymore. For very large companies, the minimum tax rate is now higher than the regular company income tax rate for many businesses.

Understanding how this fits with regular company tax starts with knowing how corporate income tax in Nigeria works in normal circumstances.

The Three Minimum Tax Regimes in 2026

The 2026 reforms created three separate minimum tax regimes based on company size.

Regime 1: Regular Companies (Turnover ≤ ₦50 billion)

For most companies not in the very large category, the minimum tax calculation remains familiar: 0.5% of gross turnover, excluding franked investment income.

Formula:
Minimum Tax = 0.5% × (Gross Turnover – Franked Investment Income)

Example:
– Gross turnover: ₦100 million
– Franked investment income: ₦5 million
– Minimum tax base: ₦95 million
– Minimum tax: ₦95 million × 0.5% = ₦475,000

If your regular company income tax calculation (30% of profits) gives a figure higher than this, you pay the higher amount. Minimum tax only kicks in when your regular tax falls below this floor.

Regime 2: Very Large Companies (Turnover > ₦50 billion or Multinational Group Members)

This is the biggest change in 2026. Companies in this category face a 15% minimum effective tax rate (ETR), aligning Nigeria with the global minimum tax framework under Pillar Two.

Under Section 57(1)(a) of the Nigeria Tax Act, if a company’s effective tax rate falls below 15% in any assessment year, a top-up tax is due to bring it up to 15%. This applies to:

• Nigerian companies with turnover of ₦50 billion or more
• Multinational groups with aggregate turnover of €750 million or its equivalent

How it works:

1. Calculate your taxable profits under normal rules
2. Calculate your tax payable under normal rules
3. Divide tax payable by taxable profits = Effective Tax Rate
4. If ETR < 15%, pay additional top-up tax to reach 15%

Covered taxes include Company Income Tax, Petroleum Profit Tax, Hydrocarbon Taxes, the 4% Development Levy, and priority sector tax credits.

Example:
– Taxable profits: ₦10 billion
– Regular tax calculated: ₦1.2 billion
– Effective tax rate: 12% (₦1.2bn ÷ ₦10bn)
– Required tax at 15%: ₦1.5 billion
– Top-up tax payable: ₦300 million
– Total tax: ₦1.5 billion

This regime targets profit shifting and ensures multinational groups pay a minimum level of tax regardless of where they book their profits.

Regime 3: Non-Resident Companies

For foreign companies with Nigerian-source income but no permanent establishment in Nigeria, minimum tax is the higher of:

• 4% of the income from Nigeria, or
• The applicable withholding tax rate

For companies in shipping, aviation, or digital services, a 2% levy applies on gross Nigerian earnings where profits are not clearly established.

Controlled Foreign Company (CFC) Rules

New for 2026, if your Nigerian company controls a foreign subsidiary, the undistributed profits of that subsidiary may now be taxable in Nigeria.

Under Section 6(3) of the Nigeria Tax Act, if a non-resident subsidiary pays tax below the minimum rate of 15% in any year, the Nigerian parent company must pay the difference locally. This mechanism works similarly to an Income Inclusion Rule (IIR).

The rules target profit shifting—parking profits in low-tax jurisdictions while the real economic activity happens in Nigeria. This is complex and requires specialist advice if it applies to you.

Who Is Exempt from Minimum Tax

The following are exempt from minimum tax under the 2026 rules:

Category	Condition
Small companies	Turnover ≤ ₦50 million AND fixed assets ≤ ₦250 million
New companies	First four calendar years of business
Agricultural companies	Wholly engaged in agricultural trade or business
Companies with imported equity	At least 25% imported equity capital (conditions apply)
Insurance companies	Subject to special rules

The small company exemption is particularly important. If your turnover is ₦50 million or less AND your fixed assets are within the limit, you pay zero company income tax, zero minimum tax, and zero development levy. The current income tax rates in Nigeria guide includes the full breakdown of small company benefits.

How Minimum Tax Interacts with Losses

Here’s where many companies get confused.

If you make a loss, you pay no company income tax. But you may still pay minimum tax if your turnover exceeds the threshold.

Example:
– Turnover: ₦200 million
– Expenses: ₦220 million
– Loss: ₦20 million
– Regular company income tax: ₦0
– Minimum tax (0.5% of turnover): ₦1 million
– Total tax payable: ₦1 million

The loss doesn’t eliminate your minimum tax obligation. You still pay based on your turnover.

However, the minimum tax paid in loss years can sometimes be carried forward and offset against future tax liabilities. The rules around this are complex and depend on your specific circumstances.

How to Calculate Minimum Tax (Step-by-Step)

Let’s walk through a complete example for a medium-sized company.

Company Data:
– Gross turnover: ₦150 million
– Franked investment income: ₦10 million
– Taxable profits: ₦20 million
– Regular CIT (30%): ₦6 million
– Minimum tax rate: 0.5%

Step 1: Calculate minimum tax base
Gross turnover – Franked investment income = ₦150m – ₦10m = ₦140m

Step 2: Calculate minimum tax
₦140m × 0.5% = ₦700,000

Step 3: Compare with regular CIT
Regular CIT: ₦6 million
Minimum tax: ₦700,000
Higher amount: ₦6 million

Result: Company pays regular CIT of ₦6 million because it’s higher than minimum tax.

Loss-making example:
– Gross turnover: ₦150 million
– Taxable profits: ₦0 (break-even)
– Regular CIT: ₦0
– Minimum tax: ₦700,000
– Result: Company pays ₦700,000 minimum tax despite making no profit.

Very Large Company Minimum Tax Example

For a company in the very large category:

Company Data:
– Turnover: ₦100 billion
– Taxable profits: ₦30 billion
– Regular CIT (30%): ₦9 billion
– Effective tax rate: 30% (already above 15%)
– Result: No top-up tax, regular CIT applies.

Company with lower effective rate:
– Turnover: ₦100 billion
– Taxable profits: ₦50 billion
– Regular CIT after incentives/reliefs: ₦6 billion
– Effective tax rate: 12% (₦6bn ÷ ₦50bn)
– Required tax at 15%: ₦7.5 billion
– Top-up tax payable: ₦1.5 billion
– Total tax: ₦7.5 billion

Common Mistakes and How to Avoid Them

Mistake 1: Assuming Loss Means No Tax

Loss-making companies with turnover above the threshold still pay minimum tax. File your returns and calculate minimum tax correctly.

Mistake 2: Misclassifying as a Small Company

The small company exemption requires meeting both turnover and asset tests. If your assets exceed ₦250 million, you’re not exempt even if turnover is below ₦50 million.

Mistake 3: Forgetting Franked Investment Income

Dividends from Nigerian companies that have already suffered tax should be excluded from your minimum tax base. Including them means overpaying.

Mistake 4: Ignoring the Four-Year Rule

New companies often assume they’re exempt forever. The four-year grace period passes quickly. Mark your calendar.

Mistake 5: Very Large Companies Not Tracking ETR

If you’re in the very large category, you need to calculate your effective tax rate every year. Don’t assume you’re above 15% without checking.

To avoid these pitfalls, familiarizing yourself with common income tax mistakes Nigerians make can save you from costly errors.

Filing and Payment

Minimum tax is calculated and paid as part of your annual company income tax return. There’s no separate filing—it’s included in the same computation.

Deadlines:
– Estimated returns: Within six months of accounting year-end
– Final returns: Within six months of accounting year-end
– Payment: Installments based on estimates, balance due on filing

Late payment of minimum tax attracts the same penalties as late payment of regular tax: 10% penalty plus interest at the Central Bank’s Monetary Policy Rate. Late filing attracts ₦100,000 for the first month and ₦50,000 for each subsequent month.

Understanding penalties for late or non-payment of tax helps you know exactly what triggers each fine and how to appeal if you’ve been wrongly charged.

For official confirmation of deadlines and payment procedures, consult the Nigeria Revenue Service company tax guidelines directly on their official website.

Documents You Need to Keep

To support your minimum tax calculation, keep:

• Financial statements showing turnover
• Records of franked investment income
• Evidence of any exemptions claimed
• Fixed asset register (to prove small company status if applicable)
• Tax computations showing how you arrived at your figures
• For very large companies: detailed ETR calculations and documentation of covered taxes
• For multinationals: subsidiary tax records to support CFC compliance

1. Keeping proper records means having the documents needed for income tax filing ready when questions arise.

The Bottom Line

Minimum tax in 2026 is no longer a simple afterthought. It’s a layered system with different rules for different companies.

• Small companies (≤ ₦50m turnover, ≤ ₦250m assets): Exempt entirely
• New companies (first four years): Exempt
• Regular companies (turnover ≤ ₦50bn): 0.5% of gross turnover
• Very large companies (turnover > ₦50bn or multinational): 15% minimum effective tax rate
• Non-resident companies: Higher of 4% of income or WHT rate (2% for some sectors)

The key is knowing which category you fall into. Misclassifying yourself can mean either paying tax you don’t owe or facing penalties for underpayment.

If you’re a small company, enjoy the exemption—but keep filing. If you’re a regular company, calculate both regular CIT and minimum tax, and pay the higher. If you’re a very large company, track your effective tax rate carefully.

The system ensures everyone contributes something. Your job is to make sure you’re contributing the right amount—not too much, not too little.

For the most up-to-date information on minimum tax implementation, consult the PwC Nigeria tax summary for detailed technical guidance.

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Last updated: February 2026
This article reflects the provisions of the Nigeria Tax Act 2025 (effective January 2026) and the Finance Act 2026.