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Answers to common questions about amended returns: electronic filing, amendment processing times, forms and tax years accepted and your return status.

We are informing you that you owe taxes and penalties. This happened because you didn't take out the required minimum amount from your individual retirement arrangement (IRA), or you put too much money into a tax-sheltered account.

We rejected your application for an individual taxpayer identification number (ITIN). You may not be eligible for an ITIN. Your documents may be invalid. We may not have received a reply when we asked for more information.

Tax information for parents, including tax credit for children and other dependents, Earned Income Tax Credit and tax benefits for education.

Claim credits and deductions when you file your tax return to lower your tax. Make sure you get all the credits and deductions you qualify for.

Information about Form W-9, Request for Taxpayer Identification Number (TIN) and Certification, including recent updates, related forms, and instructions on how to file. Form W-9 is used to provide a correct TIN to payers (or brokers) required to file information returns with IRS.

Apply for an individual taxpayer identification number (ITIN) with an IRS-approved agent in the U.S. or abroad. Find an agent near you.

The basic eligibility rules for tax credits and benefits available to you if you have a dependent qualifying child.

If you received an IRS CP14 Notice, you owe money on unpaid taxes. Pay the amount you owe, establish a payment plan or call if you disagree with the amount.

Get step-by-step guidance and resources to help you file a timely, accurate federal income tax return.