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

If you receive an IRS Notice of Deficiency in 2026, you have 90 days to respond and avoid a tax deficiency assessment. The IRS Notice Explainer can help you understand the notice and guide you through the next steps. According to the IRS, a Notice of Deficiency is a proposal to assess additional taxes, and it's crucial to address it promptly to minimize potential penalties.

What is an IRS Notice of Deficiency?

An IRS Notice of Deficiency, also known as a 90-day letter, is a formal proposal by the IRS to assess additional taxes, penalties, and interest. As of 2026, the IRS issues this notice when they propose changes to your tax return, and you have the right to dispute or agree with the proposed assessment. The notice will include the amount of tax deficiency, penalties, and interest, as well as instructions on how to respond.

How to Respond to an IRS Notice of Deficiency in 2026

To respond to an IRS Notice of Deficiency, you can either agree with the proposed assessment, request a conference with the IRS Office of Appeals, or petition the US Tax Court. According to the IRS, you must respond within 90 days of the notice date to avoid the IRS assessing the proposed tax deficiency. You can use the IRS Notice Explainer to understand the notice and guide you through the response process.

What Happens if You Don't Respond to an IRS Notice of Deficiency?

If you don't respond to an IRS Notice of Deficiency within 90 days, the IRS will assess the proposed tax deficiency, and you may face additional penalties and interest. As of 2026, the IRS can also file a tax lien or levy against your assets to collect the unpaid taxes. It's essential to address the notice promptly and seek professional help if needed to minimize potential consequences.

Understanding Your Options with the IRS Notice Explainer

The IRS Notice Explainer can help you understand the Notice of Deficiency and guide you through the response process. With this tool, you can upload your notice or enter the notice ID, and get a plain-English explanation of the proposed assessment, the response deadline, and a step-by-step action plan. As of 2026, the IRS Notice Explainer covers over 15 notice types, including the Notice of Deficiency, and can help you navigate the complex tax deficiency process.

Frequently Asked Questions

Q: What is the deadline to respond to an IRS Notice of Deficiency? A: You must respond to an IRS Notice of Deficiency within 90 days of the notice date to avoid the IRS assessing the proposed tax deficiency. The 90-day period starts from the date of the notice, and it's crucial to respond promptly to minimize potential penalties. Q: Can I appeal an IRS Notice of Deficiency? A: Yes, you can appeal an IRS Notice of Deficiency by requesting a conference with the IRS Office of Appeals or petitioning the US Tax Court. The appeal process can be complex, and it's recommended to seek professional help to ensure you follow the correct procedures. Q: How much does it cost to use the IRS Notice Explainer? A: The IRS Notice Explainer offers 2 free explanations per day, and you can upgrade to the IRS Notice Pro plan for $3.99/month to get unlimited explanations and photo upload capabilities. The Pro plan can help you navigate complex tax notices and ensure you respond correctly to avoid potential penalties. Q: What happens if I agree with the IRS Notice of Deficiency? A: If you agree with the IRS Notice of Deficiency, you can sign and return the notice, and the IRS will assess the proposed tax deficiency. You will then need to pay the assessed amount, including any penalties and interest, to avoid further collection actions. Q: Can I use the IRS Notice Explainer for other IRS notices? A: Yes, the IRS Notice Explainer can help you understand and respond to various IRS notices, including the Notice of Deficiency, CP2000, CP14, and more. The tool covers over 15 notice types and can provide a plain-English explanation of the notice, the response deadline, and a step-by-step action plan.

Conclusion

Receiving an IRS Notice of Deficiency in 2026 can be stressful, but understanding your options and responding promptly can help minimize potential consequences. The IRS Notice Explainer can guide you through the response process and help you navigate the complex tax deficiency process. Remember to respond within 90 days, and consider seeking professional help if needed to ensure you follow the correct procedures and avoid potential penalties.