The deadline for filing personal income tax in Lagos State, Nigeria has been extended to April 14, 2026, giving individuals more time to complete their tax returns. This guide explains how employees, freelancers, and business owners can file correctly, avoid penalties, and stay compliant using a simple step-by-step process.

Deadline Extension: What You Need to Know

The Lagos Inland Revenue Service (LIRS) has extended the deadline for filing personal income tax returns to April 14, 2026.

This extension gives taxpayers extra time to organize their documents and complete their filings properly. However, it is important to note that this is a final window, and failing to file before the deadline may result in penalties, fines, or legal consequences.

If you have not filed your tax return yet, this is the time to act.

Why Filing Personal Income Tax Matters

Personal income tax is a legal requirement for individuals earning income in Nigeria. It supports government funding for infrastructure, healthcare, and education.

For individuals and entrepreneurs, proper tax filing also helps with:

Access to loans and financial services
Business credibility
Visa and international applications
Avoiding penalties and compliance issues

With recent tax reforms, the process is becoming easier and more structured.

Who Needs to File Personal Income Tax in Nigeria

You are required to file personal income tax if you:

Earn a salary (PAYE employees)
Run a business or side hustle
Work as a freelancer or consultant
Earn income from rent, investments, or digital platforms

Even low-income earners may still need to file to confirm exemption status.

What You Need Before Filing

Before you begin, gather the following:

Tax Identification Number (TIN)
National Identification Number (NIN)
Bank Verification Number (BVN)
Proof of income (salary, invoices, or bank statements)
Records of business or work-related expenses
Employer details (for salary earners)

Accurate records help you avoid mistakes and complete your filing faster.

Step-by-Step Guide to Filing Personal Income Tax
Step 1: Get Your Tax Identification Number (TIN)

If you do not already have a TIN, register through the FIRS portal or retrieve it using your NIN.

Step 2: Identify All Your Income Sources

List all sources of income, including:

Salary or wages
Business income
Freelance earnings
Rental income
Investment returns

All taxable income must be declared.

Step 3: Calculate Your Total Income

Add up all your earnings for the year to get your gross income.

Step 4: Deduct Allowable Expenses and Reliefs

You can reduce your taxable income by deducting:

Pension contributions
National Housing Fund (NHF) contributions
Health insurance
Business-related expenses

These deductions lower the amount of tax you pay.

Step 5: Determine Your Taxable Income

After deductions, the remaining amount is your taxable income.

Step 6: Apply the Tax Rates

Nigeria uses a progressive tax system. Lower income is taxed at lower rates, while higher income is taxed at higher rates.

Some individuals may fall below the taxable threshold and pay zero tax.

Step 7: Log in to the Tax Portal

Visit your state tax authority website or the FIRS portal. Create an account or log in to your existing profile.

Step 8: Fill Out Your Tax Return Form

Provide accurate details, including:

Personal information
Income sources
Employment or business details
Deductions and reliefs

Double-check all entries before proceeding.

Step 9: Submit Your Tax Return

Review your form and submit it online. You will receive a confirmation or acknowledgment.

Step 10: Pay Any Tax Due

If you owe tax:

Follow the payment instructions on the portal
Pay through approved channels

Keep your payment receipt.

Step 11: Keep Your Records

Save copies of:

Filed tax returns
Payment receipts
Supporting documents

This helps for future reference or verification.

Common Mistakes to Avoid

Avoid these common errors:

Incorrect personal information
Failure to declare all income sources
Ignoring eligible deductions
Late filing
Not filing at all

These mistakes can lead to penalties.

Why You Should File Before April 14, 2026

Filing early helps you:

Avoid last-minute errors
Prevent system delays
Stay compliant with tax laws
Avoid penalties and fines

Waiting until the deadline increases the risk of mistakes or missing the submission window.

Frequently Asked Questions (FAQs)
1. What is personal income tax?

It is the tax individuals pay on income earned from salary, business, or investments.

2. What is the deadline for filing personal income tax in 2026?

The deadline has been extended for Lagos state to April 14, 2026.

3. Do I need to file if I earn a small income?

Yes. You may still need to file to confirm your exemption status.

4. Can freelancers file personal income tax?

Yes. Freelancers must declare their income and file annually.

5. What happens if I miss the deadline?

You may face penalties, fines, or legal consequences.

6. Can I file my tax online?

Yes. Filing can be done through FIRS or state tax portals.

7. How can I reduce my tax legally?

By claiming allowable deductions such as pension contributions and business expenses.

With the deadline now set for April 14, 2026, this is the best time to complete your personal income tax filing.

The process is more accessible than before, and taking action early helps you stay compliant and avoid unnecessary penalties.

Start now, follow the steps, and file your tax return before the deadline.

 

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