There are no legal definitions for a virtual economy or currency, but generally, a virtual economy is comprised by the economic activities among a community of entities that interact within a virtual setting, such as an online, multi-user game. Virtual economies can be closed, meaning the economic activities and units of exchange used within the community do not interact with the real economy outside of the virtual environment setting, or they can be open, with some economic activity occurring in both the virtual setting and the real economy. A virtual currency is, generally, a digital unit of exchange that is not backed by a government- issued legal tender. Virtual currencies can be used entirely within a virtual economy, or can be used in lieu of a government-issued currency to purchase goods and services in the real economy. Some virtual economies may function similarly to barter exchanges, where bartering is the exchange of goods or services in lieu of monetary payments. For example, a carpenter may build a desk for a dentist in exchange for dental work. Barter transactions are taxable transactions, and taxpayers must report the fair market value of the good or service received on their tax returns. Some of the variations in virtual currencies and their interaction with the real economy are shown in figure 1. 2The 2007 Taxpayer Assistance Blueprint--a 5-year strategic plan for improving service to taxpayers--is a collaborative effort of IRS, the National Taxpayer Advocate, and the IRS Oversight Board. Congress has received annual update reports on the implementation of the blueprint. 3The term "barter exchange" means any organization of members providing property or services who jointly contract to trade or barter such property or services. 26 U.S.C. SS 6045. halve every time the network reaches 210,000 blocks, or approximately every four years. From inception through November 2012, rewards were 50 bitcoins. In 2016, rewards are expected to halve again to 12.5 bitcoins. from the bitcoin network, but are providing some figures to provide context for the possible size of these markets. 5Given these limitations, we did not test the reliability of data, such as the data generated 6http://blockchain.info. (Date accessed May 1, 2013.) 7Due to data limitations, it is difficult to calculate the velocity, or the rate at which bitcoins 8https://mtgox.com. (Date accessed May 1, 2013.) https://mtgox.com operates the largest are spent, and the number of transactions between unique users in a given time period. bitcoin exchange. The site has daily and monthly limits on how many bitcoins may be exchanged back to U.S. dollars or other virtual or government-issued currencies. These limits may be raised if users provide additional documentation confirming their identity. According to Linden Lab, creators of Second Life, residents exchanged more than US$150 million worth of Linden dollars within Second Life's economy in the third quarter of 2010. IRS is responsible for ensuring taxpayer compliance for all economic areas, including virtual economies and currencies. One mechanism that assists IRS in enforcing tax laws is information reporting, through which third parties report to IRS and taxpayers on certain taxpayer transactions. For example, subject to certain thresholds, third-party settlement organizations are required to report on Form 1099-K payments in settlement of third-party network transactions. A common example of a third-party settlement organization is an online auction-payment facilitator, which operates as an intermediary between buyers and sellers by transferring funds between their accounts in settlement of purchases. Another type of third-party information reporting is performed by barter exchanges, which, generally, are organizations that facilitate barter transactions among exchange members. Such barter exchanges are required to report on Form 1099-B each member's barter transactions proceeds. Third-party information reporting is widely acknowledged to increase voluntary tax compliance, in part because taxpayers know that IRS is aware of their income. Likewise, in its role in administering the tax code, IRS must implement the laws Congress enacts through detailed guidance. To accomplish this responsibility, IRS publishes several forms of guidance, such as regulations, revenue rulings and procedures, and notices. IRS also provides more informal guidance on its website based on factors such as perceived need, media coverage, or IRS staff identifying an emerging tax compliance issue. As outlined in IRS's Taxpayer Assistance Blueprint and related reports, a key part of IRS's strategy for preventing and minimizing noncompliance is to outreach to taxpayers to help them understand and meet their tax responsibilities. One of the guiding principles of this approach is to enhance IRS's website so that it becomes the first choice of taxpayers for obtaining the information they need to comply. 9Third-party settlement organizations must file Form 1099-K if gross payments to a payee exceed $20,000 and there are more than 200 transactions with the payee in a given tax year. 10For federal tax purposes, all income is taxable, although the tax code excludes some items from income, such as gifts or inheritances, subject to exceptions, while it allows other items to be deducted to reduce taxable income, subject to limitations and restrictions, such as trade or business expenses. have no value outside the game and David cannot exchange his online money for U.S. dollars. David has not engaged in a taxable transaction. Ann plays an online game and amasses virtual tools that are valuable to her avatar. The online game does not allow users to directly exchange their virtual tools for U.S. dollars, but rather they can do so using a third-party, making this a hybrid system. Ann uses a third- party exchange not affiliated with the online game to coordinate the transfer of her virtual tools to another player in exchange for U.S. dollars. The transfer is conducted by the third-party exchange and payment is mediated by a third-party payment network. Ann may have earned taxable income from the sale of these virtual tools. John is a resident of Second Life. He rents virtual property to other residents who pay him in Linden dollars. At the end of the year, John exchanges his Linden dollars for U.S. dollars and realizes a profit. John may have earned taxable income from his activities in Second Life. Bill is a bitcoin miner. He successfully mines 25 bitcoins. Bill may have earned taxable income from his mining activities. Carol makes t-shirts and sells them over the Internet. She sells a t- shirt to Bill, who pays her with bitcoins. Carol may have earned taxable income from the sale of the t-shirt. IRS, tax experts, academics, and others have identified various tax compliance risks associated with virtual economies and currencies, including underreporting, mischaracterization, and evasion. These risks are not unique to virtual economies and currencies, as they also exist for other types of transactions, such as cash transactions, where there are not always clear records or third-party tracking and reporting of transactions. The tax compliance risks we identified for virtual economies and currencies are described below. Taxpayer lack of knowledge of tax requirements. Income is generally defined as any undeniable accessions to wealth, clearly realized, and over which the taxpayers have complete dominion. The unsophisticated taxpayer may not properly identify income earned through virtual economies or currencies, such as virtual online game assets exchanged for real word currency, as taxable income. If taxpayers using virtual currencies turn to the Internet for tax help, they may find misinformation in the absence of clear guidance from IRS. For example, when we performed a simple Internet search for information on taxation of bitcoin transactions, we found a number of websites, wikis, and blogs that provided differing opinions on the tax treatment of bitcoins, including some that could lead taxpayers to believe that transacting in virtual currencies relieves them of their responsibilities to report and pay taxes. Uncertainty over how to characterize income. Even if taxpayers are aware that they may have a tax liability, they may be uncertain about the proper tax treatment of virtual transactions, according to tax experts, including academics and tax practitioners with whom we spoke. For example, characterization depends on whether the virtual economy activity or virtual currency unit is to be treated as property, barter, foreign currency, or a financial instrument. According to some experts with whom we spoke, some virtual currency transactions could be considered barter transactions, which may not be an obvious characterization to unsophisticated taxpayers. This characterization could result in noncompliance with requirements for reporting and paying tax on barter income. Uncertainty over how to calculate basis for gains. Income earned from virtual economy or currency transactions may not be taxable if it is equivalent to that from an occasional online garage sale, meaning occasional income from selling goods for less than their original purchase price. It may be difficult for individuals receiving income from virtual economies to determine their basis for calculating gains. For example, some online games require players to pay a monthly fee in exchange for use of the game and a monthly allowance of virtual currency. If a player then sells a virtual tool gained in the game for real money, calculating the basis for any taxable gain may be difficult for the unsophisticated taxpayer. Challenges with third-party reporting. Third-party information reporting requirements do not apply specifically to transactions using virtual economies or currencies. Virtual economy or currency transactions may be subject to third-party information reporting to the extent that these transactions involve the use of a third-party payment network to mediate the transaction and the taxpayer meets reporting threshold requirements. Because virtual economy and currency transactions are inherently difficult to track, including identifying the true identities of the parties to the transaction, third-party information reporting may be difficult or prohibitively burdensome for some virtual economy and currency issuers to administer. Evasion. Some taxpayers may use virtual economies and currencies as a way to evade taxes. Because transactions can be difficult to trace and many virtual economies and currencies offer some level of anonymity, taxpayers may use them to hide taxable income. Because of the limited reliable data available on their size, it is difficult to determine how significant virtual economy and currency markets may be or how much tax revenue is at risk through their usage. Some experts with whom we spoke indicated that there is potential for growth in the use of virtual currencies. Additionally, the European Central Bank recently issued a report on virtual currencies, acknowledging their potential for future growth and interaction with the real economy. If the use of virtual economies and currencies expands, it can be expected that associated revenue at risk of tax noncompliance will grow. 1326 U.S.C. SS 6050W and applicable regulations define third-party payment networks. 14European Central Bank, Virtual Currency Schemes (Frankfurt am Main, Germany: October 2012). IRS has assessed the tax compliance risks from virtual economies and virtual currencies used within those economies, and developed a plan to address them in a manner consistent with internal control standards. Beginning in 2007, IRS's Electronic Business and Emerging Issues (EBEI) policy group identified and surveyed internal and external information sources, gathered data on the industry, and collect trend information, among other efforts. EBEI determined that virtual economies presented opportunities for income underreporting and developed (1) a potential compliance strategy, including initiating a compliance improvement project to gather research data and analyze compliance trends, and (2) a potential action plan for specific compliance activities. According to IRS compliance officials, IRS ultimately decided not to pursue these actions in light of available IRS resources and other higher priority needs. Also, IRS did not find strong evidence of the potential for tax noncompliance related to virtual economies, such as the number of U.S. taxpayers involved in such activity or the amount of federal tax revenue at risk. However, in November 2009, based on EBEI having determined the need, IRS posted information on its website on the tax consequences of virtual economy transactions. The web page points out that, in general, taxpayers can receive income in the form of money, property, or services from a virtual economy, and that if taxpayers receive more income than they spend, they may be required to report their gains as taxable income. The page further states that IRS has provided guidance on the tax treatment of issues similar to online gaming activities, including bartering, gambling, business, and hobby income, and provides links to IRS publications on those topics. IRS officials who were involved in issuing this guidance reported it cost less to make an online statement pointing taxpayers to existing guidance than it would have cost to develop and publish new guidance specific to virtual economies. IRS has not assessed the tax compliance risks of open-flow virtual currencies developed and used outside of virtual economies. These types of currencies, generally, were introduced after IRS's last review of compliance related to virtual economy transactions. According to IRS compliance officials, IRS would learn about tax compliance issues related to virtual currencies as it would any other tax compliance issue, such as IRS examiners identifying compliance problems during examinations or taxpayers requesting guidance on how to comply with certain tax requirements. To date, these processes have not resulted in IRS identifying virtual currencies used outside of virtual economies as a compliance risk that warrants specific attention. Likewise, IRS has not issued guidance specific to virtual currencies used outside of virtual economies due to competing priorities and resource constraints, and because the use of virtual currencies is a relatively recent development that requires further consideration before guidance can be issued, according to IRS's Office of Chief Counsel and compliance officials. As previously discussed, taxpayers may be unaware that income from transactions using this type of virtual currency may be taxable, or if they are aware, uncertain on how to characterize it. By not issuing guidance, IRS may be missing an opportunity to address these compliance risks and minimize their impact and the potential for noncompliance. Given the uncertain extent of noncompliance related to virtual currency transactions, formal guidance, such as regulations, revenue rulings, or revenue notices, may not be warranted at this time. According to officials from IRS's Office of Chief Counsel, these types of guidance require extensive review within IRS and the Department of the Treasury and, in some cases, public comment, which add to the time and cost of development. However, IRS may be able to develop informal guidance, which, according to Chief Counsel officials, requires less extensive agency review and can be based on other existing guidance. As such, IRS can develop informal guidance in a more timely and less costly manner than formal guidance, according to the officials. An example of such informal guidance is the information IRS provides to taxpayers on its website on the tax consequences of virtual economy transactions. Posting such information to its website would be consistent with IRS's strategy for preventing and minimizing taxpayers' noncompliance by helping them understand and meet their tax responsibilities, as outlined in IRS's Taxpayer Assistance Blueprint. in providing taxpayers with information on the tax consequences of virtual economy transactions, a low-cost step to potentially mitigate some of the noncompliance risk associated with such transactions. The uncertainty about the extent virtual currencies are used in taxable transactions and any associated tax noncompliance means that costly compliance activities are not merited at this time. However, the fact that misinformation is circulating and the possibility of growth in the use of virtual currencies outside virtual economies suggest that it would be prudent to take low-cost steps, if available, to mitigate potential compliance risks. The type of information IRS provided about virtual economy transactions is one model. To mitigate the risk of noncompliance from virtual currencies, the Commissioner of Internal Revenue should find relatively low-cost ways to provide information to taxpayers, such as the web statement IRS developed on virtual economies, on the basic tax reporting requirements for transactions using virtual currencies developed and used outside virtual economies. We sent a draft of this report to the Acting Commissioner of Internal Revenue for comment. In written comments, reproduced in appendix I, IRS agreed with our recommendation and stated it would provide information to taxpayers on the basic tax reporting requirements for transactions involving virtual currencies by linking to existing relevant guidance. IRS noted that it was aware of the tax compliance risks associated with virtual currencies and was taking other steps, such as developing training resources for agents, to address them. IRS also provided technical comments on our draft report, which we incorporated, as appropriate. As agreed with your offices, unless you publicly announce the contents of this report earlier, we plan no further distribution until 30 days from the report date. At that time, we will send copies to interested congressional committees, the Secretary of the Treasury, the Acting Commissioner of Internal Revenue, and other interested parties. In addition, the report also will be available at no charge on the GAO website at http://www.gao.gov. If you or your staff have any questions about this report, please contact me at (202) 512-9110 or whitej@gao.gov. Contact points for our Offices of Congressional Relations and Public Affairs may be found on the last page of this report. GAO staff who made key contributions to this report are listed in appendix II. In addition to the contact named above, Jeff Arkin (Assistant Director), David Dornisch, Lois Hanshaw, Richard Hung, Ronald W. Jones, Donna Miller, Ed Nannenhorn, Danielle N. Novak, and Sabrina Streagle made key contributions to this report.

Summary:
Recent years have seen the development of virtual economies, such as those within online role-playing games, through which individual participants can own and exchange virtual goods and services. Within some virtual economies, virtual currencies have been created as a medium of exchange for goods and services. Virtual property and currency can be exchanged for real goods, services, and currency, and virtual currencies have been developed outside of virtual economies as alternatives to government-issued currencies, such as dollars. These innovations raise questions about related tax requirements and potential challenges for IRS compliance efforts. This report (1) describes the tax reporting requirements for virtual economies and currencies, (2) identifies the potential tax compliance risks of virtual economies and currencies, and (3) assesses how IRS has addressed the tax compliance risks of virtual economies and currencies. To accomplish these objectives, GAO reviewed tax laws, IRS guidance and program documents, federal program internal control guidance, and interviewed IRS officials and knowledgeable experts on the topics. Transactions within virtual economies or using virtual currencies could produce taxable income in various ways, depending on the facts and circumstances of each transaction. For example, transactions within a "closed-flow" virtual currency system do not produce taxable income because a virtual currency can be used only to purchase virtual goods or services. An example of a closed-flow transaction is the purchase of items to use within an online game. In an "openflow" system, a taxpayer who receives virtual currency as payment for real goods or services may have earned taxable income since the virtual currency can be exchanged for real goods or services or readily exchanged for governmentissued currency, such as U.S. dollars. Virtual economies and currencies pose various tax compliance risks, but the extent of actual tax noncompliance is unknown. Some identified risks include taxpayers not being aware that income earned through virtual economies or currencies is taxable or not knowing how to calculate such income. Because of the limited reliable data available on their size, it is difficult to determine how significant virtual economy and currency markets may be or how much tax revenue is at risk through their usage. Some experts with whom we spoke indicated a potential for growth in the use of virtual currencies. Beginning in 2007, IRS assessed the tax compliance risks from virtual economies, and in 2009 posted information on its website on the tax consequences of virtual economy transactions. However, IRS has not provided taxpayers with information specific to virtual currencies because of other priorities, resource constraints, and the need to consider the use of these recently-developed currencies, according to IRS officials. By not issuing guidance, IRS may be missing an opportunity to address virtual currency tax compliance risks. Given the uncertain extent of noncompliance with virtual currency transactions, formal guidance, such as regulations, may not be warranted. According to IRS officials, formal guidance requires extensive review, which adds to development time and cost. However, IRS may be able to develop more timely and less costly informal guidance, which, according to IRS officials, requires less extensive review and can be based on other existing guidance. An example is the information IRS provides to taxpayers on its website on the tax consequences of virtual economy transactions. Posting such information would be consistent with IRS's strategy for preventing and minimizing taxpayers' noncompliance by helping them understand and meet their tax responsibilities. GAO recommends that IRS find relatively low-cost ways to provide information to taxpayers, such as on its website, on the basic tax reporting requirements for virtual currencies. In commenting on a draft of this report, IRS agreed with our recommendation.