No, but you may be able to request an audit reconsideration. An audit reconsideration is a process that reopens your Internal Revenue Service) IRS audit.
Click
here for information about an audit reconsideration from the Taxpayer Advocate Service. The Taxpayer
Advocate Service is your voice at the IRS.
Do you know why there is a $500 in tax? If not, you should compare the copy of your federal tax return that shows $500 less tax to the report that Internal Revenue Service(IRS) has given you to find out what is causing the $500 difference.