IRS Releases the 2018 Data Book

In May, the IRS released its annual “Data Book” for 2018. The report discusses activities conducted by the IRS during Fiscal year 2018 (October 1, 2017 through September 30, 2018). It provides information on returns filed and taxes collected, enforcement, taxpayer assistance, the IRS budget and workforce, and other selected activities.

Highlights of the Data

  • In Fiscal Year (FY) 2018, the IRS processed more than 250 million tax returns and collected
    nearly $3.5 trillion in federal taxes paid by individuals and businesses.
  • The IRS also took steps in FY 2018 to begin implementation of the Tax Cuts and Jobs Act, the December 2017 legislation that reflected the most sweeping set of changes in our tax system in more than 30 years.
  • In the service area, the IRS handled almost 55 million taxpayer calls in FY 2018, and our website,, had more than 608 million visits.
  •  The IRS audited almost 1.0 million tax returns, approximately 0.5 per-cent of all returns filed in Calendar Year (CY) 2017.
  • The IRS audited 0.6 percent of all individual income tax returns filed in CY 2017, and 0.9 percent of corporation income tax returns (excluding S corporation returns).
  • The IRS examined 15,562 tax exempt organization, employee retirement plan (the solo 401k plan falls under this category and the data shows 260 Form 5500-ezs were examined–see page 34), government entity,tax exempt bond, and related taxable returns in FY 2017.
  • In FY 2018, the IRS issued a total of 5,132 determination letters on employee retirement plans. These consisted of 1,404 determination letters for defined benefit plans and 3,728 determination letters for defined contribution plans.
  • In Fiscal Year (FY) 2018, the IRS provided taxpayer assistance through almost 608.8 million visits to, assisted more than 64.8 million taxpayers through correspondence,its toll-free telephone helpline or at Taxpayer Assistance Centers, and had more than 309.2 million inquiries to the “Where’s My Refund” application.

About Mark Nolan

Each day I speak with energetic entrepreneurs looking to take the plunge into a new venture and small business owners eager to take control of their retirement savings. I am passionate about helping others find their financial independence. Having worked for over 20 years with some of the top retirement account custodian and insurance companies I have a deep and extensive knowledge of the complexities of self-directed 401ks and IRAs as well as retirement plan regulations. Learn more about Mark Nolan and My Solo 401k Financial >>


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