A lot of people who get laid off from corporate jobs end up doing some freelance work, ... But people who are coming from a job with a paycheck are not knowledgeable about the expenses they can file on Schedule C. They should familiarize themselves with those deductions. If they have considerable self-employment income, they can set up a Keogh or SEP IRA to shelter some of the income from taxes.
Since we do charge for our work, we do need the permit and licenses, but do it not so much for income but more out of a love of what we're doing. We really do enjoy our work. We're blessed and don't need the extra income, and we're at a stage in our lives where we don't have to do work if we don't want to.