To create an online income certificate, first, log in to your Service Plus Portal. 2. After successfully logging in, go to your services and select the Income Certificate Service. 3. Now the application form for making an income certificate will open in front of you. 4. Fill the complete information considered in this application form. 5. After this, upload some important documents mentioned here. 6. After filling the information, submit the application. 7. In this way, you will be able to apply for making an income certificate.