The Lagos State Internal Revenue Service (LIRS) has restated that January 31, 2026 remains the statutory deadline for employers operating in Lagos State to file their annual tax returns for the 2025 financial year, reinforcing its stance on strict regulatory compliance.

The reminder was issued by the Executive Chairman of LIRS, Dr Ayodele Subair, who noted that the obligation is backed by the provisions of the Nigeria Tax Administration Act 2025 (NTAA). According to the agency, employers are required to submit comprehensive returns detailing emoluments, salaries and other forms of compensation paid to employees during the year, alongside payments made to service providers, consultants and vendors, with evidence that all applicable taxes have been duly deducted and remitted.

LIRS stressed that annual tax filing is not optional but a statutory requirement, warning that organisations that fail to meet the January 31 deadline will be subject to penalties and administrative sanctions as prescribed under the NTAA. The law mandates employers to disclose taxes deducted and paid to relevant authorities within the stipulated timeframe, a process the agency says is critical for transparency and effective tax administration.

Dr Subair emphasised that timely and accurate filing should form part of routine corporate governance and compliance practices, adding that early submission supports efficient revenue monitoring and strengthens Lagos State’s fiscal sustainability. He noted that compliance with tax obligations ultimately contributes to improved public service delivery and long-term economic planning.

In line with ongoing digitisation efforts, LIRS reiterated that all annual tax returns must be filed exclusively through its electronic tax platform, as manual submissions are no longer accepted. The eTax system, according to the agency, is designed to streamline the filing process, ensure data accuracy and provide employers with round-the-clock access to fulfil their obligations.

Employers were also advised to ensure that the Tax Identification Numbers (TaxID) of all employees are properly captured during filing, as missing or incorrect details could delay submission. Employees without a TaxID are expected to generate one promptly to avoid disruptions.

LIRS encouraged organisations requiring clarification or technical support to engage the agency through its official offices and digital channels, reaffirming its commitment to providing guidance while maintaining firm enforcement of compliance standards across Lagos State.