What this notice is about We made changes to your Form 1042, Annual Withholding Tax Return for U.S. Source Income of Foreign Persons, because we found a miscalculation. As a result of these changes, you have an overpayment on your account. What you need to do Read your notice carefully - it will explain why you owe. Compare the figures on the notice with your tax return. Contact us within 10 days of the date of the notice if you disagree with the changes we made. Please have your account information available when you call. Correct the copy of your tax return that you kept for your records if you agree with our changes. Keep this notice for your records. You may want to Download a copy of Instructions for Form 1042PDF. Frequently asked questions When will I receive my refund? You should receive a refund check within 4-6 weeks as long as you don’t owe other tax or debts we’re required to collect. Will I be paid interest on the amount refunded? Your refund amount may include interest. Keep in mind that any interest you receive on tax refunds is taxable income in the year you receive it. Tips for next year Consider filing your taxes electronically. Filing online can help you avoid mistakes. Learn more about filing options. Review your return for accuracy before mailing it to us. Tax publications you may find useful Publication 515, Withholding of Tax on Nonresident Aliens and Foreign EntitiesPDF Publication 15 (Circular E), Employer’s Tax GuidePDF Reference Tools Publication 1, Your Rights as a Taxpayer Notice Topic 651 Notice Topic 653 Full list of tax forms and instructions Need Help? You can authorize someone to represent you before the IRS or inspect and/or receive confidential tax information. You may be eligible for free help from the Taxpayer Advocate Service (TAS). See if you qualify for help from a Low Income Taxpayer Clinic. You can request a copy of your notice or letter in Braille or large print. If you can’t find what you need online, call the telephone number on your notice or letter.