Dear [Tax Department], I am writing to request a Supplement to my tax return for the State of Texas. I recently filed my tax return for the tax year [year], and upon reviewing my records, I have identified additional information that needs to be included in the return. Enclosed are the necessary documents and supporting evidence to substantiate the changes I am requesting. As per the Texas Tax Code, Section [insert section number], taxpayers are entitled to file a Supplement to their original tax return if they discover any omissions, errors, or changes that affect their tax liability. Understanding this, I am seeking your assistance in making the necessary amendments to my tax return. The reasons for my Supplement request are as follows: 1. Correction of Income Reporting: After reviewing my tax documents, I discovered that I inadvertently omitted a portion of my income that should have been reported for the tax year. I have included the corrected income statement from my employer, which reflects the accurate income earned during that period. 2. Additional Deductions: Upon consulting with my tax advisor, I realized that I failed to claim certain legitimate deductions in my original tax return. Enclosed are the supporting documents for these deductions, including receipts, invoices, and relevant financial statements. Considering the mentioned changes, I kindly request that a Supplement be processed for my tax return to reflect the accurate information. Additionally, I would appreciate if you could provide any guidance on how to ensure that these changes are properly reflected and processed by the Texas Comptroller's office. If there is any further documentation or information that you require to process my request, please do not hesitate to contact me at [phone number] or [email address]. I sincerely apologize for any inconvenience caused and appreciate your understanding and prompt attention to this matter. Thank you for your cooperation. I look forward to resolving this matter and bringing my tax return up-to-date. Sincerely, [Your Name] [Your Address] [City, State, ZIP Code] [Taxpayer Identification Number or Social Security Number]