Tax laws are complicated, often leading to several errors when filing returns. These mistakes could cost more money in the form of taxes, interest, and penalties or lead to an audit from the IRS. One must meticulously fill out and proofread their tax return forms to avoid this hassle. Here are 13 of the most common mistakes people make while filing tax returns; the articles also lists ways to avoid these mistakes. 1. Filing too early While tax returns must never be filed late, filing them too early may not be a good idea either. Prematurely sending in one’s tax returns could lead to missing out on important tax documents, leading to mistakes in computing and processing delays. Since taxes are due by April 15 each year, it is advisable to have all documents ready and filed by the end of March. 2. Mistyping the Social Security Number (SSN) This may seem like a no-brainer, but it is a common error across many tax returns. The Social Security Number should be mentioned as it appears on the Social Security card. 3. Making typos Similarly, special attention must also be paid to one’s name and those of one’s dependents. Making typos here may lead to unnecessary delays and legal hassle.