Follow the steps to successfully fill out the IRS Notice 746 (SP) online.

1. Press the ‘Get Form’ button to acquire the form and open it in your editor.
2. Carefully read the instructions included within the form to understand the information required in each section.
3. Begin filling out your personal information, including your full name, address, and taxpayer identification number.
4. Specify the tax period related to your notice and include the details about any penalties or interest you are disputing.
5. Attach any required documents supporting your claim, such as copies of prior correspondence with the IRS.
6. Review all sections to ensure accuracy and completeness before proceeding.
7. Once satisfied with the filled form, you can save your changes or print it for your records.
8. Submit the final document via the designated method as per IRS instructions, whether that involves mailing it to the correct address or submitting electronically.

Take action now and complete your forms online for a smoother process.