Printable Form 2026

IRS Form 15105 – IRS Forms, Instructions, Pubs 2026

IRS Form 15105 – IRS Forms, Instructions, Pubs 2026 – In the complex world of federal excise taxes, accuracy and detail are paramount. If you’ve filed IRS Form 720, the Quarterly Federal Excise Tax Return, but omitted a detailed breakdown of your liabilities, you might receive a notice from the IRS requesting more information. This is where IRS Form 15105 comes into play. Titled “No Breakdown of Liability By Abstract Number on Form 720,” this form helps taxpayers provide the necessary details to clarify their excise tax obligations. In this comprehensive guide, we’ll explore what Form 15105 is, when it’s required, how to complete it, and key tips for compliance—drawing from official IRS resources to ensure accuracy.

What Is IRS Form 15105?

IRS Form 15105 is a supplemental document used to report a detailed breakdown of excise tax liabilities that were not itemized on your original Form 720. It focuses on specifying liabilities by “abstract number,” which refers to the IRS-assigned codes for different types of excise taxes, such as those on coal, gasoline, or other taxable items. The form ensures the IRS can properly allocate and verify your reported taxes.

Introduced in its current revision in June 2017, Form 15105 remains a key tool for resolving discrepancies in excise tax filings. It’s typically enclosed with IRS notices when your Form 720 lacks the required granularity. Without this breakdown, the IRS cannot process your return efficiently, potentially leading to delays or additional inquiries.

A Spanish version, Form 15105 (SP), is also available for non-English speakers, maintaining the same structure and requirements. Both versions are accessible as downloadable PDFs from the official IRS website.

When Do You Need to Use Form 15105?

You won’t typically file Form 15105 proactively—it’s reactive. The IRS issues it in response to an incomplete Form 720 submission. Specifically:

  • Receipt of CP183 Notice: This notice alerts you that your Quarterly Federal Excise Tax Return was received but lacks a breakdown by tax type and amount. The CP183 includes Form 15105 and instructs you to complete it to provide the missing details.
  • Common Scenarios: This often occurs with businesses involved in excise-taxable activities like fuel distribution, manufacturing, or transportation. If your Form 720 lumps liabilities without specifying IRS numbers (e.g., IRS No. 33 for gasoline or IRS No. 60 for coal), the IRS will request clarification.

The form must be returned within 30 days of the notice date to avoid potential penalties or further IRS actions. Ignoring it could result in estimated assessments or holds on your account.

How to Complete IRS Form 15105 Step by Step?

Filling out Form 15105 is straightforward, but precision is essential to avoid errors. Here’s a detailed walkthrough based on the form’s structure:

  1. Contact Information:
    • Enter your Employer Identification Number (EIN).
    • Provide your business name.
    • Specify the tax period(s) in question (e.g., quarter ending March 31, 2026).
    • If your address has changed, update it here, including city, state, and ZIP code. Alternatively, call 1-866-699-4096 or update via the IRS website.
    • Include primary and secondary phone numbers, along with the best times to call (a.m. or p.m.).
  2. Tax Breakdown Section:
    • This is the core of the form. List each type of tax, the corresponding amount, and the IRS number.
    • Type of Tax: Describe the taxable item (e.g., “Diesel Fuel” or “Aviation Gasoline”).
    • Amount: Enter the dollar amount of liability for that tax type.
    • IRS Number: Use the official IRS abstract number from Form 720 instructions (found in the right or left columns of the form).
    • The form provides space for multiple entries—typically three columns, but attach additional sheets if needed.
  3. Submission:
    • Mail the completed form using the enclosed envelope from your notice. If using your own, send it to the address on the notice.
    • Ensure submission within the 30-day window.

For large-print versions or accessibility needs, the IRS offers Form 15105 in 20-point Arial font as a downloadable ZIP file. Always double-check against the latest IRS guidelines, as tax rules can evolve.

  • Form 720: The primary quarterly return for federal excise taxes. Review its instructions for a full list of IRS numbers and tax types.
  • CP183 Notice: Explains the issue and includes Form 15105.
  • Official Download: Access the PDF directly from the IRS at https://www.irs.gov/pub/irs-pdf/f15105.pdf.
  • For help, contact the IRS Excise Tax Hotline at 1-866-699-4096 or visit irs.gov for FAQs on excise taxes.

Tips for Avoiding Form 15105 and Common Mistakes

To prevent receiving this form in the future:

  • Always provide a full breakdown on your initial Form 720 submission.
  • Use software or tools compliant with IRS e-filing standards for accuracy.
  • Keep records of all excise tax transactions, categorized by IRS number.

Common pitfalls include:

  • Omitting IRS numbers, leading to incomplete filings.
  • Incorrect tax type descriptions, which can confuse IRS processing.
  • Missing the 30-day deadline, potentially incurring penalties.

By staying proactive, you can streamline your excise tax compliance and minimize IRS interactions.

Conclusion

IRS Form 15105 serves as a critical bridge for clarifying excise tax details on Form 720, ensuring your filings are complete and verifiable. Whether you’re a small business owner or a tax professional handling excise returns, understanding this form can save time and reduce stress. For the most up-to-date information, always refer to official IRS sources. If you’re dealing with a CP183 notice, act promptly—compliance is key to smooth tax operations in 2026 and beyond.