How do I file business tax online? Click here to enter the business tax online filing website. Note: All business tax returns filed after January 1, 2014 must be filed electronically. May 16, 2017 20:29 Related articles How do I renew my business licenses? My local clerk said I would have to renew through the Department of Revenue. How do I file and pay franchise and excise tax online? If I file today, do I have to make a payment today? What if I do not want to calculate my penalty and interest? I need to close my business. What do I need to do regarding my business tax account and license?