Nigerian Taxpayers Must File Returns by March 31: Key Changes and Penalties Explained
March 31 Tax Deadline: Guide to Filing Personal Income Returns in Nigeria

Nigerian Taxpayers Must File Returns by March 31: Key Changes and Penalties Explained

With the March 31 deadline rapidly approaching, millions of taxpayers across Nigeria are grappling with the requirements to file their personal income tax returns under the newly implemented regulations. According to recent reports, confusion persists among citizens regarding the proper procedures and legal obligations, highlighting the need for clear guidance.

Mandatory Filing for All Income Earners

Under the Nigeria Tax Act 2025, every individual earning income within the country is legally required to submit annual tax returns that cover earnings from the previous calendar year. This mandate applies broadly, encompassing salaried employees, freelancers, business owners, and other professionals. Notably, tax expert Taiwo Oyedele has emphasized that compliance is critical, stressing that both employees and employers share responsibilities under the law.

Employees must not assume that tax deductions made by their employers under the Pay-As-You-Earn (PAYE) system automatically fulfil their filing obligations. Oyedele pointed out that individuals are still expected to file self-assessments independently, and current compliance levels in this area remain disappointingly low. Personal income tax is administered by state tax authorities based on an individual’s place of residence, with varying filing requirements depending on one’s employment status.

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Essential Steps: TIN and Income Declaration

Before initiating the filing process, taxpayers must obtain a Tax Identification Number (TIN), which can be generated online using a National Identification Number or through agencies such as the Nigeria Revenue Service or relevant state internal revenue services. This unique identifier is crucial for all tax-related transactions.

Taxpayers are obligated to declare all sources of income comprehensively. This includes, but is not limited to, salaries, business earnings, rental income, dividends, and any applicable foreign income. After determining the total income, allowable deductions and reliefs are applied to calculate the final taxable income accurately.

Updated Reliefs Under the New Tax Law

The Nigeria Tax Act 2025 introduces significant changes to the relief structures available to taxpayers. A major shift is the removal of the Consolidated Relief Allowance, which has been a staple in previous tax calculations.

In its place, eligible taxpayers can now claim rent relief, calculated as the lower of N500,000 or 20 per cent of the annual rent paid, provided proper documentation is submitted. Other deductions, such as pension contributions and National Housing Fund payments, remain applicable under the new framework. Additionally, the law provides a zero-rate tax band on the first N800,000 of taxable income, offering some relief to lower-income earners.

Filing Process and Required Documentation

Tax returns can be filed either online through designated state tax portals or physically at authorized offices. During the filing process, individuals must provide accurate personal details, employment information, and a detailed breakdown of all income sources.

Relevant documents required for submission include:

  • Tax Identification Number (TIN)
  • Valid identification documents
  • Payslips and bank statements
  • Records of business income and expenses
  • Evidence supporting deductions or relief claims, such as rent receipts

Penalties for Non-Compliance and Late Filing

Tax authorities have issued stern warnings that failure to meet the March 31 deadline may result in severe penalties. These can include substantial fines and additional charges, with the severity often depending on the duration of the default. Officials advise early filing to avoid last-minute technical issues and to allow time for resolving any discrepancies that may arise during submission.

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Recent analysis by the Lagos State Inland Revenue Service (LIRS) of over 1.49 million tax records from the 2024 tax year reveals that more than half of taxpayers will pay zero tax under the new laws. Specifically, just 1.6% of Lagos taxpayers will face higher tax obligations, while approximately 98% of workers will either see a reduction in their tax burden or be completely exempt. The new tax law is designed to protect minimum wage workers and low-income earners from taxation, reflecting a progressive approach to fiscal policy.

As the deadline looms, taxpayers are urged to act promptly, gather all necessary documentation, and ensure accurate reporting to avoid penalties and contribute to national revenue efforts.