Lagos State Government Enforces March 31 Tax Filing Deadline with Strict Penalties
The Lagos State Government has issued a stern warning to all residents earning income within the state, mandating the filing of annual personal income tax returns by March 31, 2026. Failure to comply will result in significant financial penalties, including an initial fine of N100,000 for the first month of default, followed by N50,000 for each subsequent month until the returns are submitted.
Legal Obligation and Self-Assessment System
Abideen Akande, Special Adviser to the Executive Chairman of the Lagos State Internal Revenue Service (LIRS), emphasized that filing tax returns is not optional but a legal requirement under both constitutional provisions and statutory laws. Nigeria operates a self-assessment tax system, where individuals must voluntarily declare their income for the previous calendar year, covering earnings from January 1 to December 31. This process allows tax authorities to assess income, determine tax liabilities, and ensure transparency in the state's tax framework.
Akande highlighted that many residents focus on constitutional rights while neglecting obligations, noting that tax declaration is essential for maintaining an organized society. He stressed that even individuals earning below the taxable threshold of approximately N840,000 annually must file returns, as this informs the government of their income status, even if their tax liability is zero.
Fully Digitised Tax Filing Process
To streamline compliance, the Lagos State Government has fully digitised the tax filing process through the LIRS e-tax platform. This online system replaces earlier paper forms, which were often lengthy and complicated, sometimes spanning six pages. Residents can now electronically declare income, claim allowable deductions, and confirm taxes already deducted via the official portal.
The digital platform guides users through various steps, including inputting income details and applying for reliefs such as pension contributions, health insurance payments, National Housing Fund contributions, mortgage interest payments, and life insurance premiums. However, taxpayers cannot simultaneously claim mortgage interest relief and rent relief, with rent relief capped at N500,000 or 20% of gross income, whichever is lower.
Deadline and Early Filing Advice
The tax filing window opens annually on January 1 and closes on March 31. Akande advised residents to file early once they have calculated their income, typically by mid-January, to avoid last-minute system congestion and potential errors. Delaying until the deadline can lead to technical issues and increased risk of non-compliance.
Consequences of Non-Compliance
Defaulters who fail to file by the deadline face not only administrative fines but also presumptive tax assessments, where authorities estimate income and impose taxes accordingly. This could result in higher payments than if filed voluntarily. For example, a business owner declaring income might pay zero tax if below the threshold, whereas someone refusing to file could be assessed 1% of estimated turnover.
Akande encouraged all residents, including those in the informal sector, to file promptly to avoid penalties and protect their financial interests. This move aligns with broader tax harmonisation efforts in Nigeria, with 12 states already adopting related laws and 13 more considering bills.
The Lagos State Government, under Governor Babajide Sanwo-Olu, continues to enhance tax administration through digital innovations and public awareness campaigns, aiming to boost revenue and support state development initiatives.
