Most people file their tax return because they have to, but even if you don’t, there are times when you should. You may be eligible for a tax refund and not know it. This year, there are a few new rules for some who must file. Here are six tax tips to help you find out if you should file a tax return:

1. General Filing Rules. Whether you need to file a tax return depends on a few factors. In most cases, the amount of your income, your filing status and your age determine if you must file a tax return. For example, if you’re single and 28 years old you must file if your income was at least $10,150. Other rules may apply if you’re self-employed or if you’re a dependent of another person. There are also other cases when you must file.