Table of Contents
In order to determine where to file your return and which form(s) you need to complete, you must determine the source of each item of income you received during the tax year. Income you received from sources within, or that was effectively connected with the conduct of a trade or business in, the relevant possession must be identified separately from U.S. or foreign source income.
This chapter discusses the rules for determining if the source of your income is:
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American Samoa,
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The Commonwealth of the Northern Mariana Islands (CNMI),
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The Commonwealth of Puerto Rico (Puerto Rico),
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Guam, or
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The U.S. Virgin Islands (USVI).
Generally, the same rules that apply for determining U.S. source income also apply for determining possession source income. However, there are some important exceptions to these rules. Both the general rules and the exceptions are discussed in this chapter.
The rules for determining possession source income are generally effective for income earned after December 31, 2004. The basis of these rules is the “U.S. income rule.”
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From sources in the United States, or
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Effectively connected with the conduct of a trade or business in the United States.
Table 2-1. General Rules for Determining U.S. Source of Income
| Item of Income | Factor Determining Source |
| Salaries, wages, and other compensation for labor or personal services | Where labor or services performed |
| Pensions | Where services were performed that earned the pension |
| Interest | Residence of payer |
| Dividends | Where corporation created or organized |
| Rents | Location of property |
| Royalties: | |
| Natural resources | Location of property |
| Patents, copyrights, etc. | Where property is used |
| Sale of business inventory—purchased | Where sold |
| Sale of business inventory—produced | Allocation if produced and sold in different locations |
| Sale of real property | Location of property |
| Sale of personal property | Seller's tax home (but see Special rules for gains from dispositions of certain property, earlier, for exceptions) |
| Sale of natural resources | Allocation based on fair market value of product at export terminal. For more information, see Regulations section 1.863-1(b). |
This section looks at the most common types of income received by individuals, and the rules for determining the source of the income. Generally, the same rules shown in Table 2-1 are used to determine if you have possession source income.
Income from labor or personal services includes wages, salaries, commissions, fees, per diem allowances, employee allowances and bonuses, and fringe benefits. It also includes income earned by sole proprietors and general partners from providing personal services in the course of their trade or business.
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Number of days you performed
services in the relevant possession during the year |
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Total number of days you
performed services during the year |
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Example.
In 2007, you worked in your employer's office in the United States for 60 days and in the Puerto Rico office for 175 days, earning a total of $50,000 for the year. Your Puerto Rico source income is $37,234, figured as follows.
| 175 days 235 days |
× | $50,000 | = | $37,234 | ||
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Housing.
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Education.
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Local transportation.
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Tax reimbursement.
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Hazardous or hardship duty pay.
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Moving expense reimbursement.
This category includes such income as interest, dividends, rents, and royalties.
The source rules for sales or other dispositions of property are varied. The most common situations are discussed below.
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For the tax year for which the source of the gain must be determined, you are a bona fide resident of the relevant possession.
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For any of the 10 years preceding that year, you were a citizen or resident alien of the United States (other than a bona fide resident of the relevant possession).
Example.
In 2002, Cheryl Jones, a U.S. citizen, lives in the United States and buys 100 shares of stock in the Rose Corporation, a U.S. corporation. In 2005, she moves to Puerto Rico. In 2007, while a bona fide resident of Puerto Rico, Cheryl sells the Rose Corporation stock at a gain. For income tax purposes, this gain is not treated as income from sources within Puerto Rico.

The source of these types of income is generally the residence of the payer, regardless of who actually disburses the funds. Therefore, in order to be possession source income, the payer must be a resident of the relevant possession, such as an individual who is a bona fide resident or a corporation created or organized in that possession.

In limited circumstances, some kinds of income from sources outside the relevant possession must be treated as effectively connected with a trade or business in that possession. These circumstances are listed below.
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You have an office or other fixed place of business in the relevant possession to which the income can be attributed.
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That office or place of business is a material factor in producing the income.
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The income is produced in the ordinary course of the trade or business carried on through that office or other fixed place of business.
An office or other fixed place of business is a material factor if it significantly contributes to, and is an essential economic element in, the earning of the income.
The three kinds of income from sources outside the relevant possession to which these rules apply are the following.
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Rents and royalties for the use of, or for the privilege of using, intangible personal property located outside the relevant possession or from any interest in such property. Included are rents or royalties for the use of, or for the privilege of using, outside the relevant possession, patents, copyrights, secret processes and formulas, goodwill, trademarks, trade brands, franchises, and similar properties if the rents or royalties are from the active conduct of a trade or business in the relevant possession.
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Dividends or interest from the active conduct of a banking, financing, or similar business in the relevant possession.
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Income, gain, or loss from the sale or exchange outside the relevant possession, through the office or other fixed place of business in the relevant possession, of:
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Stock in trade,
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Property that would be included in inventory if on hand at the end of the tax year, or
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Property held primarily for sale to customers in the ordinary course of business.
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Item (3) will not apply if you sold the property for use, consumption, or disposition outside the relevant possession and an office or other fixed place of business in a foreign country was a material factor in the sale.
For tax years beginning after October 22, 2004 (beginning with tax year 2005 if a calendar year taxpayer), any income from a source outside the relevant possession that is equivalent to any item of income described in (1)-(3) above is treated as effectively connected with a trade or business in the relevant possession.
Example.
Marcy Jackson is a bona fide resident of American Samoa. Her business, which she conducts from an office in American Samoa, is developing and selling specialized computer software. A software purchaser will frequently pay Marcy an additional amount to install the software on the purchaser's operating system and to ensure that the software is functioning properly. Marcy installs the software at the purchaser's place of business, which may be in American Samoa, in the United States, or in another country. The income from selling the software is effectively connected with the conduct of Marcy's business in American Samoa, even though the product's destination may be outside the possession. However, the compensation she receives for installing the software (personal services) outside of American Samoa is not effectively connected with the conduct of her business in the possession—the income is sourced where she performs the services.
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