Hi, my name is Heather, and I have a couple of questions. I work a full-time job that withholds taxes from my income. I also work for about seven companies as a mystery shopper. Last year I only received a 1099 from one of them. I noticed that last year I was charged a penalty for not filing quarterly taxes, but I have been working as a mystery shopper for about 6 years and never paid a penalty before for paying my taxes in February. My income varies from month to month. Do I need to be paying taxes quarterly or can I pay them at the end of the year? If I need to be paying quarterly how do I figure out how much to pay?
