Income and outlays
These doughnut charts show the relative sizes of the major categories of the federal income and outlays for fiscal year 2012. It was designed on the base of the pie charts from the website of the Internal Revenue Service (IRS), U.S. Department of the Treasury.
[apps.irs.gov/app/understandingTaxes/whys/thm01/les01/ac3_thm01_les01.jsp]
"An income tax is a tax imposed on individuals or entities (taxpayers) that varies with the income or profits (taxable income) of the taxpayer. Details vary widely by jurisdiction. Many jurisdictions refer to income tax on business entities as companies tax or corporate tax. Partnerships generally are not taxed; rather, the partners are taxed on their share of partnership items. Tax may be imposed by both a country and subdivisions. Most jurisdictions exempt locally organized charitable organizations from tax." [Income tax. Wikipedia]
The donut charts example "Income and outlays" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Pie Charts solution of the Graphs and Charts area in ConceptDraw Solution Park.