The Lagos State Internal Revenue Service has reminded all taxable persons residing in Lagos of their statutory obligation to file annual income tax returns for the relevant Year of Assessment, with a deadline of March 31, 2026.
In a public notice, LIRS stated that the requirement is backed by Section 24(f) of the 1999 Constitution (as amended) and further reinforced by Section 13 of the Nigeria Tax Administration Act (NTAA) 2025, which mandates all taxable individuals, whether or not they have tax liabilities, to file annual returns.
According to LIRS, taxpayers are expected to complete the filing process via its e-tax platform before the deadline.
The returns must include a duly completed self-assessment form, declaration of income from all sources, details of personal reliefs, full tax computation, and evidence of tax payment where applicable.
For individuals earning income from business, trade, profession, or vocation, the agency added that audited financial statements or duly attested accounts must also be submitted.
The tax authority emphasized that compliance is mandatory, warning that failure to file returns within the stipulated timeline will attract a penalty of ₦100,000 in the first instance and ₦50,000 for each subsequent month of default, alongside other enforcement measures under the NTAA 2025.
LIRS urged taxpayers to take advantage of its digital platform and support channels to ensure timely compliance, reiterating its commitment to improving tax administration and revenue generation in the state.
