Since you already have your CAC registered business name and TIN number, you’re actually in a good position to file. Here’s exactly what to do:

Step 1 — Go to TaxProMax

Visit taxpromax.gov.ng and create an account using your TIN number. This is FIRS’s official filing platform.

Step 2 — Prepare your figures

Before you log in, write down:

Total income your business earned this year

Total expenses you spent running the business

The difference = your profit (that’s what gets taxed)

Even if you made little or no profit, you still file. It’s called a nil return.

Step 3 — File your return

Once logged in, select “File Tax Return”, enter your income and expense figures, then submit.

Step 4 — Pay if required

If your annual profit is above ₦300,000, a small tax applies starting at 7%. You can pay directly through the platform via Remita or your bank.

Important deadline: Returns for 2025 must be filed before March 31, 2026  so now is the right time.

If you find the online process confusing, you can also walk into any nearby FIRS office with your CAC certificate, TIN, and income details. They’ll guide you through it physically.