In this case it is generally best to file an amended return. If you are receiving a W-2 or a 1099, that means the IRS has been notified of this income and may hold you accountable for paying tax on it. File Form 1040 X [Amended Individual Return] to correct the errors on your return. If you filed your return with PriorTax, email us or leave us a message and we will advise you on the best way to proceed.