STEP 1: Visit the FCTIRS Self Service Portal @ fcttaxportal.fctirs.gov.ng/selfservice/account/signin.
STEP 2: Enter your TIN and password to login or click on the register button in case you are yet to register for the self service.
STEP 3: Click on the Menu button and select Tax Returns.
STEP 3: On the Tax Returns click on the File Returns.
STEP 4: Click on File a New Return button.
STEP 5: On the new Return Page, enter assessment date and assessment year and click on Generate Returns Reference Number button.
STEP 6: On the Assessment Page enter the required information on part A, B, C, and D and submit your filling for approval.