Tax Deficiency

What is a Tax Deficiency, and How Does It Affect You?

A tax deficiency is the amount of additional tax the IRS determines you owe, beyond what you initially reported on your tax return. This happens when the IRS believes you underpaid your taxes. It’s the difference between the correct amount of tax and what you actually paid.

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Related Terms

Understanding the terminology is helpful. Here are a few terms related to a tax deficiency:

  • Tax Liability: The total amount of tax you owe.
  • Tax Audit: An examination of your tax return by the IRS.
  • Penalties: Additional charges for not complying with tax laws.
  • Interest: A fee charged on unpaid taxes.
  • Installment Agreement: A payment plan with the IRS.
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Notice of Deficiency (CP3219A)

A Notice of Deficiency (CP3219A) is an IRS letter indicating proposed changes to your tax return that could result in additional taxes owed. Knowing how to respond is crucial to protect your rights and avoid enforced collection.

Tax Underpayment Penalty

A tax underpayment penalty occurs when you fail to pay enough federal income tax during the year, either through withholding or estimated tax payments. It results in extra fees charged by the IRS for underpaying taxes.
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