Dear [Tax Authority], I am writing to provide you with the required information for my tax return for the supplemental income I earned in Puerto Rico during the year [insert year]. As a resident of Puerto Rico, it is important for me to accurately report all my earnings and fulfill my tax obligations accordingly. Puerto Rico, officially known as the Commonwealth of Puerto Rico, is a territory of the United States located in the Caribbean. It is an unincorporated territory, meaning it is not an independent country but operates under the sovereignty of the United States. Despite its territorial status, Puerto Rico has retained its own distinct culture, language (Spanish and English), and government. As a U.S. territory, Puerto Rico has a unique tax system with specific rules and requirements. It operates under the Puerto Rico Internal Revenue Code (PR IRC), which differs from the Internal Revenue Code (IRC) followed by the mainland United States. Individuals who earn income in Puerto Rico are subject to both federal and Puerto Rico taxes. There are different types of Puerto Rico sample letters that may be necessary for tax returns related to supplemental income. Some common types include: 1. Puerto Rico Tax Return Letter for Supplemental Income: This letter is used to report additional income earned in Puerto Rico that is not covered or included in the standard tax return. 2. Puerto Rico Tax Return Letter for Self-Employment Supplement: Self-employed individuals in Puerto Rico may need to provide a sample letter for their tax return specifically related to supplemental or additional income from their business activities. 3. Puerto Rico Tax Return Letter for Investment Supplement: If an individual earned additional income from investments in Puerto Rico, a sample letter may be required to accurately report this income in their tax return. 4. Puerto Rico Tax Return Letter for Rental Income Supplement: Individuals who received rental income from properties located in Puerto Rico must file a sample letter mentioning the additional income from these rental activities. Each type of Puerto Rico sample letter for tax return for supplement should include the necessary information to clearly identify the nature and amount of the supplemental income. This typically includes the taxpayer's identification details, a breakdown of the income sources, dates of earnings, amounts received, and any applicable deductions or expenses associated with the supplemental income. In conclusion, Puerto Rico's unique status as a U.S. territory necessitates specific tax reporting and compliance. By providing the requested sample letter and information, I aim to ensure accurate reporting and fulfill my tax obligations in both Puerto Rico and the United States. Thank you for your attention to this matter. If you require any additional documentation or information, please do not hesitate to let me know. Sincerely, [Your Name]