Last month, the Internal Revenue Service released the 2015 IRS Data Book, a snapshot of agency activities for the fiscal year.

The 2015 Data Book describes activities conducted by the IRS from Oct. 1, 2014, to Sept. 30, 2015 and includes information about returns filed, taxes collected, enforcement, taxpayer assistance and the IRS budget and workforce, among others. This edition also contains charts that show trends, such as the decline in the number of audits and the reduction in telephone and in-person tax assistance, but increases in the use of online resources and volunteer tax assistance.

Highlights of this year's Data Book

• During FY 2015, the IRS collected more than $3.3 trillion, processed more than 243 million tax ...
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