The Nigerian Tax Act (NTA) 2025 has repositioned stamp duties from a peripheral administrative formality into a central, electronically driven revenue mechanism. No longer confined to physical document filing at a high court registry, stamp duties now function as a transaction-based tax with far-reaching implications for corporate banking and financing.
Under Section 140(1) of the NTA 2025, stamp duty is a tax levied on written instruments. The Act defines an instrument broadly as any document — whether executed on paper or generated electronically — that creates, transfers, limits, extends, or extinguishes a right, asset, or financial liability.
The legislation imposes a strict stamping requirement. For any commercial instrument to carry legal validity, be admissible as evidence before a Nigerian court, or be recognised by a public officer, it must bear an official stamp. In the digital age, this can be satisfied through either a physical adhesive stamp or an electronic stamp issued via an automated revenue portal.
Section 140(1) casts a wide net. It captures all eligible instruments executed within Nigeria, as well as documents executed abroad that relate to property situated in Nigeria or any transaction to be performed within the country. From real estate conveyances and corporate leases to electronic bank transfers, nearly every foundational business transaction must clear this legislative gate.
Consider a practical illustration. A business owner named Taiwo establishes a manufacturing company. Upon incorporation, the initial nominal share capital documents must be presented for stamping. Under the Ninth Schedule to the NTA 2025, the corporate structure attracts an ad valorem duty rate of 0.75% on that nominal share capital. Four years later, when the company director executes an instrument to increase share capital, the same 0.75% rate applies to the value of the new capital injected. Should Taiwo's company later secure funding through corporate mortgages or bonds to finance a factory, those long-term debt instruments are subject to a lower ad valorem rate of 0.375% on the total amount secured.
Alongside these substantial corporate instruments run the everyday financial transactions that sustain operations. The law deploys automated digital enforcement for routine banking activities. If Taiwo initiates an electronic transfer of ₦20,000 through a commercial bank, the transaction exceeds the statutory threshold. The Ninth Schedule prescribes a flat electronic stamp duty of ₦50, automatically applied and deducted by the financial institution on all electronic receipts or transfers of ₦10,000 and above.
Because these transactions involve a corporate entity and are processed through financial institutions, Section 140(2)(a) of the NTA 2025 applies directly. The Nigeria Revenue Service (NRS) holds exclusive administrative authority over corporate capital fees and automated banking deductions.
The collecting authority hinges entirely on the legal status of the parties. Section 140(2)(a) explicitly mandates that the NRS is the sole body empowered to collect stamp duties on instruments executed by corporate entities or on any transaction to which a company is a party. The NRS also retains absolute jurisdiction over electronic stamp duties deducted from banking institutions. Conversely, Section 140(2)(b) provides that when an instrument is executed strictly between individuals or non-corporate entities, the relevant State Internal Revenue Service captures the revenue.
To prevent jurisdictional conflicts, Section 4 of the Joint Revenue Board of Nigeria (Establishment) Act 2025 positions the Joint Revenue Board (JRB) as the ultimate harmonising body. The JRB ensures seamless coordination and dispute resolution between the NRS and the various state revenue agencies.
