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<\/a><\/p>\nThe tax gap can be a major source of inequity. Today\u2019s tax code contains two sets of rules: one for regular wage and salary workers who report virtually all the income they earn; and another for wealthy taxpayers, who are often able to avoid a large share of the taxes they owe. As Table 1 demonstrates, estimates from academic researchers suggest that more than $160 billion lost annually is from taxes that top 1 percent choose not to pay.1<\/sup><\/a><\/p>\n Table 1: Distribution of the Tax Gap<\/strong><\/p>\n The United States collects less tax revenue as a percentage of GDP than at most points in recent history, in part because owed but uncollected taxes are so significant. The tax gap also has meaningful implications for fiscal policy. These unpaid taxes mean policymakers must choose between rising deficits, lower spending on important priorities, or further tax increase to compensate for lost revenue\u2014which will only be borne by compliant taxpayers.<\/p>\n Currently, an under-staffed IRS, with outdated technology, is unable to collect 15 percent of taxes that are owed, and a lack of resources means that audit rates have fallen across the board, but they\u2019ve decreased more in the last decade for high earners than for Earned Income Tax Credit (EITC) recipients. For the IRS to appropriately enforce the tax laws against high earners and large corporations, it needs funding to hire and train revenue agents who can decipher their thousands of pages of sophisticated tax filings. It also needs access to information about opaque income streams\u2014like proprietorship and partnership income\u2014that accrue disproportionately to high-earners.<\/p>\n The Administration\u2019s proposals call for significantly increasing the IRS budget, specifically $80 billion of investment over the coming ten years in enforcement, IT, and taxpayer services generating an estimated $320 billion in additional tax collections over the next ten years.<\/p>\n To further ensure that everyone pays their fair share, the Administration also calls for using information that financial institutions already possess\u2014without imposing any burden on taxpayers whatsoever\u2014so the IRS can deploy these additional resources to audit more sophisticated tax evaders. These changes to the third-party information reports are estimated to generate $460 billion over a decade.<\/p>\n In the subsequent decade, once the overhaul of the IRS is complete, these proposals combined will generate even more revenue: an estimated $1.6 trillion in additional tax revenue, just from improved collection of the taxes that are already due.<\/p>\n This revenue will be collected in a highly progressive way, as the tax gap is more concentrated toward the top of the income distribution.<\/p>\n Why does misreporting rise with income? In part, tax evasion is concentrated toward the top of the income distribution because higher-income taxpayers have the ability to tap into the services of accountants and tax preparers who help shield them from bearing their true income tax liability. Because these individuals know enforcement authorities lack the resources needed to pursue them, the consequences of their underpayments are viewed as minor, and so voluntary compliance rates tend to be lower.<\/p>\n But the distribution of the underreporting tax gap is also the natural byproduct of the current information reporting regime. There is a direct relationship between the information the IRS has at its disposal to verify that a taxpayer has properly paid her tax liabilities, and her voluntary compliance rate. For ordinary wage and salary income, compliance with income tax liabilities is nearly perfect (1 percent noncompliance rate). In stark contrast, for opaque income sources that accrue disproportionately to higher earners\u2014like partnership income, proprietorship income, and rental income\u2014noncompliance can reach 55 percent.<\/p>\n In fact, about half of the individual income tax gap accrues to income streams from proprietorships, partnerships, and S-corporations, where there is either little or no information available to the IRS to verify the veracity of tax filings. As Table 2 makes clear, a significant share of this income accrues to those at the very top of the distribution.<\/p>\n Table 2: Distribution of Proprietorship, Partnership, and S-Corporation Income<\/strong><\/p>\n<\/p>\n<\/p>\n