Sometimes, even those who intended to accurately and fully execute their annual tax return make mistakes. Generally, if a paid tax accountant is responsible for this mistake, they will take steps to correct their error on your behalf as quickly as possible. For those who prepared and filed their own returns, however, this situation can quickly become a real predicament. Should you file a corrected return? How big should the error be before it's required to file an amended tax return? And most importantly, does filing a correction to a previously filed tax form result in increased risk of an IRS tax audit?