A spokeswoman for the Internal Revenue Service says despite what you may have heard, there is no way to be certain you won't be audited.

Karen Connelly says she often receives questions about how to avoid an audit, and the bottom line is that there is no sure-fire method for doing that. While statistics indicate large corporations and millionaires are audited more frequently than other taxpayers, a certain number of returns are selected at random every year for review. There is no way to be certain yours won't be one of them.

She advises taxpayers to keep all relevant information, from W-2 forms to receipts and other documentation, for at least three years. She also says that if you have someone prepare your taxes for you, make sure you have contact information for them in case there are questions about your return.