Nigeria has introduced a 15 percent Minimum Effective Tax Rate (ETR) for large domestic companies and multinational enterprises. This move is changing how investors assess returns, dividend sustainability and cross-border tax exposure.
Under Section 57(1)(a) of the Nigeria Tax Act (NTA), qualifying companies must pay a top-up tax where their effective tax rate falls below 15 percent of net income, regardless of incentives, capital allowances or tax planning structures that previously reduced liabilities.
“Minimum effective tax rate is just a way of introducing a minimum tax rate for not just multinationals but for Nigerian companies as well,” said Ajibola Sogunro, tax partner at Forvis Mazars.
“The law says that where your tax to be paid is below the 15 percent minimum effective rate for eligible companies, they should pay the top-up.”
Section 57(2) of the NTA states that the ETR applies to companies with aggregate turnover of N50 billion or more in a financial year, and multinational groups with aggregate group turnover of at least £750 million or its equivalent.
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Covered taxes include Company Income Tax (CIT), petroleum profit tax, hydrocarbon taxes, the 4 percent development levy, and priority-sector tax credits. These are measured against net income reported in audited financial statements, excluding franked investment income and unrealised gains or losses.
By tying the floor to audited profitability rather than turnover, the framework limits the extent to which deductions or allowances can push tax payments below the 15 percent benchmark.
For investors, the implications translate directly into cash flow. A company with N100 billion in turnover and a 5 percent profit margin generates N5 billion in pre-tax profit.
If its effective tax rate previously settled at 12 percent, its liability would amount to N600 million. At the 15 percent minimum, tax rises to N750 million, which means an additional N150 million that would otherwise have been available for dividends, reinvestment or debt servicing.
Over time, this affects dividend flows, retained earnings, and valuation models, particularly in high-turnover, low-margin sectors such as telecommunications, banking, and manufacturing, where even small changes in effective tax rates can materially alter net returns.
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The law extends beyond domestic operations. Section 6(3) of the NTA provides that where a non-resident subsidiary of a Nigerian parent pays tax below the 15 percent threshold in its jurisdiction, the Nigerian parent must pay the difference in Nigeria.
“By virtue of the new law, they will now report not only the Nigerian operation but also subsidiaries of the Nigerian entity,” said Israel Ajayi, senior manager at KPMG. “If the subsidiary ETR is lower than 15 percent, the Nigerian parent will include the difference in its own reporting and pay taxes here in Nigeria.”
This provision strengthens Nigeria’s Controlled Foreign Company (CFC) framework, reducing the ability of groups to shift profits to lower-tax jurisdictions without fiscal consequences at home.
Andersen, in its article titled The Impact of the Nigeria Tax Act 2025 on Corporate Planning, noted that the 15 percent ETR “ensures large domestic and multinational companies maintain a minimum tax burden, even where incentives or capital allowances reduce taxable profits,” forcing firms to manage overall effective tax rates, capital structure, and investment timing more deliberately.
Smaller firms with turnover below N100 million remain exempt. Free Trade Zone operators are also excluded unless they are part of qualifying multinational groups.
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Authorities have also retained unilateral relief and treaty mechanisms to minimise double taxation. Ajayi noted that the incidence of double taxation “will be very minimal, if not eliminated,” due to existing relief provisions.
For investors, the shift is less about headline tax rates, which remain at 30 percent for CIT and more about the disappearance of sub-15 percent effective outcomes for qualifying firms.
Incentives may still impact investment decisions, but they can no longer drive effective tax burdens below the statutory floor.
According to Andersen, the result is that companies are forced to transition from a relief-driven mindset to a more strategic approach, managing overall ETR, capital structure, and investment timing.
