What this notice is about We made changes to your tax return because we found a miscalculation. As a result of these changes, you have an overpayment on your account. What you need to do Read the notice carefully. Compare the figures on the notice with your tax return. Contact us within 10 days of the date of your notice if you disagree with the changes we made. Correct the copy of your tax return you kept for your records if you agree with our changes. You should receive a refund of the amount you overpaid soon, if you haven’t already, and you owe no additional amounts we are required to collect. You may want to Download copies of the following materials (if they weren’t included with your notice): Instructions for Form 2290 PDF, for a Form 2290, Heavy Highway Vehicle Use Tax Return, filing. Instructions for Form 706 PDF, for a Form 706, United States Estate (and Generation-Skipping Transfer) Tax Return, filing. Instructions for Form 709 PDF, for a Form 709, United States Gift (and Generation-Skipping Transfer) Tax Return, filing. Form 730, Monthly Tax Return for Wagers PDF, for general instructions on your Form 730 filing. Form 11-C, Occupational Tax and Registration Return for Wagering PDF, for general instructions on your Form 11-C filing. Frequently asked questions How can I find out what caused my tax return to change? Call us at the toll-free number on your notice for specific information about your tax return. What should I do if I disagree with the changes you made? If you disagree, call us at the toll-free number on your notice or write to us at the address on the contact stub within 10 days of the date of the notice. We can reverse the change to your account if your response provides additional information that justifies a reversal. If you agree with the change, you don’t need to do anything; however, you should update your records. Will I receive a refund of the amount overpaid? Yes, as long as you owe no other outstanding liabilities we are required to collect and the amount of your refund is $1 or more. Tips for next year Consider filing your taxes electronically. Filing online can help you avoid mistakes. Learn more about e-file options. Review your return for accuracy prior to mailing it to us. Reference Tools Publication 1, Your Rights as a Taxpayer PDF Publication 559, Survivors, Executors, and Administrators PDF Publication 947, Practice Before the IRS and Power of Attorney PDF Notice 746, Information About Your Notice, Penalty and Interest PDF Full list of tax forms and instructions ¿Necesita ayuda? Puede autorizar a alguien para comunicarse con el IRS en su nombre. Vea si califica para recibir ayuda de una Clínica para Contribuyentes de Bajos Ingresos (en inglés). Si no puede encontrar lo que necesita en línea, llame al número del IRS que se indica en la parte superior de su aviso.