Before you panic over what the IRS might do, determine if the $14 is going to make a difference in the outcome. Once you determine whether or not it makes a difference in the outcome, then what you need to do depends on whether or not you have a refund or owe taxes. If it makes a difference and you owe taxes, I would file an amended return as soon as you know your original return is filed and pay any additional tax.
If you are receiving a refund and you would get back less, it is possible they catch it before they issue you your refund. If you get the full amount of the original calculation then be prepared to pay the difference when you receive a letter from the IRS. Do not send the additional amount until the IRS sends a letter requesting the additional tax.
