Your IRS notice or letter will explain the reason for the contact and give you instructions on how to handle the issue.If you agree with the information, there is no need to contact us.Enter your notice or letter number above to get more information on IRS notices and letters, along with answers to many notice-related questions. If your notice or letter doesn't return a result using the Notices & Letters Search on this page, contact us at the toll-free number 800-829-1040.Why Was I Notified By The IRS?The IRS sends notices and letters for the following reasons:You have a balance due.You are due a larger or smaller refund.We have a question about your tax return.We need to verify your identity.We need additional information.We changed your return.We need to notify you of delays in processing your return.