The Internal Revenue Service (IRS) made progress in addressing previously reported control deficiencies; however, continuing and newly identified control deficiencies limited the effectiveness of security controls for protecting the confidentiality, integrity, and availability of IRS's key financial and tax processing systems. During fiscal year 2016, IRS made improvements in access controls over

In March 2016, GAO reported that the Internal Revenue Service (IRS) had instituted numerous controls over key financial and tax processing systems; however, it had not always effectively implemented other controls intended to properly restrict access to systems and information, among other security measures. In particular, while IRS had improved some of its access controls, weaknesses remained in

The Internal Revenue Service (IRS) made progress in implementing information security controls; however, weaknesses in the controls limited their effectiveness in protecting the confidentiality, integrity, and availability of financial and sensitive taxpayer data. During fiscal year 2015, IRS continued to devote attention to securing its information systems that process sensitive taxpayer and fin

The Internal Revenue Service (IRS) provided the lowest level of telephone service during fiscal year 2015 compared to prior years, with only 38 percent of callers who wanted to speak with an IRS assistor able to reach one. This lower level of service occurred despite lower demand from callers seeking live assistance, which has fallen by 6 percent since 2010 to about 51 million callers in 2015. Ov

The Internal Revenue Service (IRS) Whistleblower Office (WO) is responsible for processing thousands of tax whistleblower claims annually for two related whistleblower programs: for claims of $2 million or less, the 7623(a) program, and for claims over $2 million, the 7623(b) program. The whistleblower claim review process takes several years to complete, and GAO found that the WO is not using av

According to estimates produced by government tax researchers using 2010 taxpayer data, small businesses (defined in the research as individuals or entities with substantive business activity but with less than $10 million in total income and deductions) make up 99 percent of all businesses. Approximately 69 percent of small businesses (about 16 million) are individual taxpayers who report busine

According to estimates produced by government tax researchers using 2010 taxpayer data, small businesses (defined in the research as individuals or entities with substantive business activity but with less than $10 million in total income and deductions) make up 99 percent of all businesses. Approximately 69 percent of small businesses (about 16 million) are individual taxpayers who report busine

The Internal Revenue Service (IRS) made progress in implementing information security controls; however, weaknesses limit their effectiveness in protecting the confidentiality, integrity and availability of financial and sensitive taxpayer data. During fiscal year 2014, IRS continued to devote attention to securing its information systems that process sensitive taxpayer and financial information.

Based on preliminary analysis, the Internal Revenue Service (IRS) estimates it paid $5.2 billion in fraudulent identity theft (IDT) refunds in filing season 2013, while preventing $24.2 billion (based on what it could detect). The full extent is unknown because of the challenges inherent in detecting IDT refund fraud. IDT refund fraud takes advantage of IRS's "look-back" compliance model. Under t

During its audit of the Internal Revenue Service's (IRS) fiscal year 2012 financial statements, GAO identified one new internal control deficiency that contributed to IRS's continuing material weakness in internal control over unpaid tax assessments as of September 30, 2012. Specifically, IRS's controls over its process for estimating the balances of federal taxes receivable and other unpaid tax