What to Do If You Receive an IRS Notice of Deficiency in 2026

If you receive an IRS Notice of Deficiency in 2026, it means the IRS has determined you owe additional taxes, and you must respond promptly to avoid further penalties and interest. The notice will outline the amount of tax due, plus any interest and penalties accrued. You have 90 days to respond to the notice, either by paying the amount due, requesting a hearing, or filing a petition with the Tax Court.

What is an IRS Notice of Deficiency?

An IRS Notice of Deficiency is a formal notification from the IRS that you owe additional taxes, and it's usually sent after an audit or examination of your tax return. According to the IRS, a Notice of Deficiency is a legally required notice that informs you of the IRS's intention to assess a tax deficiency, and it provides you with an opportunity to dispute the proposed assessment. The notice will include the amount of tax due, plus any interest and penalties, and it will also explain your rights and options for responding to the notice.

How to Respond to an IRS Notice of Deficiency

If you receive an IRS Notice of Deficiency, you should respond promptly to avoid additional penalties and interest. You have 90 days to respond to the notice, and you can do so by paying the amount due, requesting a hearing, or filing a petition with the Tax Court. If you agree with the notice, you can pay the amount due and avoid further penalties and interest. However, if you disagree with the notice, you should request a hearing or file a petition with the Tax Court to dispute the proposed assessment.

What Are the Consequences of Ignoring an IRS Notice of Deficiency?

Ignoring an IRS Notice of Deficiency can result in severe consequences, including additional penalties and interest. If you fail to respond to the notice within 90 days, the IRS can assess the tax deficiency, and you may be subject to further penalties and interest. Additionally, ignoring the notice can also lead to a loss of your rights to dispute the proposed assessment, and you may be forced to pay the amount due, plus any interest and penalties accrued. According to the IRS, the failure to pay a tax deficiency can result in a penalty of up to 25% of the unpaid amount, plus interest on the unpaid amount.

How to Avoid Receiving an IRS Notice of Deficiency

While it's impossible to completely avoid receiving an IRS Notice of Deficiency, you can take steps to minimize the risk. One of the most effective ways to avoid a Notice of Deficiency is to ensure that your tax return is accurate and complete. You should also keep accurate records of your income, expenses, and deductions, and you should be prepared to provide documentation to support your tax return. Additionally, you should respond promptly to any IRS notices or requests for information, and you should seek professional help if you're unsure about how to respond to a notice.

Frequently Asked Questions

Q: What is the deadline for responding to an IRS Notice of Deficiency? A: You have 90 days to respond to an IRS Notice of Deficiency, either by paying the amount due, requesting a hearing, or filing a petition with the Tax Court. Q: What are the consequences of ignoring an IRS Notice of Deficiency? A: Ignoring an IRS Notice of Deficiency can result in additional penalties and interest, and you may lose your rights to dispute the proposed assessment. Q: How can I avoid receiving an IRS Notice of Deficiency? A: You can minimize the risk of receiving a Notice of Deficiency by ensuring that your tax return is accurate and complete, keeping accurate records, and responding promptly to any IRS notices or requests for information. Q: What should I do if I receive an IRS Notice of Deficiency and I disagree with it? A: If you disagree with an IRS Notice of Deficiency, you should request a hearing or file a petition with the Tax Court to dispute the proposed assessment. Q: Can I appeal an IRS Notice of Deficiency? A: Yes, you can appeal an IRS Notice of Deficiency by filing a petition with the Tax Court or by requesting a hearing with the IRS Office of Appeals.

Conclusion

Receiving an IRS Notice of Deficiency in 2026 requires immediate action to avoid additional penalties and interest. You should respond promptly to the notice, either by paying the amount due, requesting a hearing, or filing a petition with the Tax Court. If you're unsure about how to respond to a notice, you should seek professional help. For more information on IRS notices and how to respond to them, you can use the IRS Notice Explainer tool, which provides plain-English explanations of IRS notices and step-by-step action plans for responding to them.