Tax Acts 2025 transition guidelines clarify how tax liabilities, audits, incentives and compliance will be managed under Nigeria’s new tax regime

The Federal Government has released comprehensive transition guidelines for the implementation of the Tax Acts 2025, providing clarity on how taxpayers, tax authorities and other stakeholders should navigate the shift from Nigeria’s previous tax regime to the new framework that took effect on January 1, 2026.

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The guidelines were announced in Abuja on Thursday through a statement issued by Efe Ovuakporie, Head of Information and Public Relations at the Federal Ministry of Finance, as authorities continue the rollout of one of the country’s most significant tax reform programmes in recent decades.

According to the ministry, the Tax Acts 2025 Transition Guidelines establish clear procedures for handling tax liabilities, assessments, audits, investigations, disputes and enforcement actions that span both the old and new legal frameworks.

“The Federal Government has issued the General Guidelines for the implementation of the Tax Acts 2025, setting out the process for transition from the repealed tax laws to the new tax framework effective from January 1, 2026,” the statement said.

The ministry explained that the reform package comprises four key laws: the Nigeria Revenue Service (Establishment) Act, the Nigeria Tax Act, the Nigeria Tax Administration Act and the Joint Revenue Board (Establishment) Act.

Under the transition arrangement, tax obligations relating to periods before the commencement of the new laws will continue to be administered under the repealed legislation.

Similarly, audits, investigations, disputes and enforcement matters linked to earlier tax periods will remain subject to the provisions that were in force at the time.

The guidelines also provide certainty for businesses and individuals regarding tax filings.

According to the ministry, tax returns for accounting periods ending before January 1, 2026, will be submitted under the previous tax regime, while returns due from that date onward will be processed under the new framework.

A notable aspect of the guidelines is the treatment of tax incentives and exemptions.

The government confirmed that incentives granted under repealed laws will remain valid until their expiry dates, providing reassurance to businesses that had already secured approvals under existing schemes.

However, fresh applications and pending requests for incentives will be evaluated under the provisions of the Tax Acts 2025.

The framework further addresses income taxes, transaction taxes, development levies, record-keeping obligations and transactions that extend across both tax regimes, helping to minimise uncertainty during the transition period.

Speaking on the new guidelines, the Minister of Finance and Coordinating Minister of the Economy, Taiwo Oyedele, said the document was designed to ensure a smooth migration process while preventing retrospective application of the new laws.

“The document provides a framework for managing transitional issues while ensuring that the new laws are not applied retrospectively,” Oyedele said.

The minister described the tax reforms as a landmark development in Nigeria’s revenue administration landscape, noting that the guidelines are built on the principles of clarity, fairness and administrative certainty.

According to the ministry, the Tax Acts 2025 Transition Guidelines are intended to promote consistent implementation across the Nigeria Revenue Service, state internal revenue services, the Federal Capital Territory Internal Revenue Service, local government revenue committees, tax professionals and taxpayers nationwide.

The release comes amid broader efforts by the Federal Government to modernise tax administration, improve voluntary compliance and strengthen non-oil revenue generation as part of its economic reform agenda.

For years, stakeholders have called for greater simplicity, transparency and coordination within Nigeria’s tax system, citing overlapping regulations and compliance burdens as obstacles to investment and business growth.

Officials believe the new framework will help create a more efficient and predictable tax environment, improve revenue collection and enhance Nigeria’s attractiveness to both domestic and foreign investors.

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As implementation gathers pace, businesses and taxpayers are expected to closely examine the new guidelines to ensure compliance and better understand how ongoing obligations will be treated under the reformed tax system.