About the Publication
InContext is an award-winning publication from the Indiana Business Research Center at Indiana University's Kelley School of Business.

According to the Census of Governments, 52 percent ($11.2 billion) of the money coming into the state government’s coffers was from taxes. The other half of the state’s general revenue came in the form of intergovernmental revenue, current charges and miscellaneous revenue. (1) Indiana’s largest sources of state government revenue (55.5 percent) are general and selective sales taxes, contributing a collective $6.2 billion. The personal income tax is the state government’s next largest revenue stream, contributing $3.6 billion or 32.5 percent (see Figure 1).

For the 2003 tax year (payable in 2004), 2.83 million personal income tax returns were filed, a 1.1 percent decline (32,032 returns) since 2002. (This includes all filing types and out-of-state taxpayers who owed Indiana taxes.) Over the same time period, the population increased by 0.7 percent (41,244).
Returns for taxpayers in the $20,001 to $30,000 income bracket declined the most, and the largest increase was for taxpayers in the $75,001 to $100,000 income tax bracket. There were 105 fewer returns reporting over $1 million in income and an increase of 5,225 returns reporting no income in 2003. Total federal adjusted gross income (AGI) for Indiana taxpayers and those non-resident filers was $116.6 billion, slightly down from the previous year (see Table 1). AGI is the sum of all taxable sources of income (capital gains, dividends, pension and annuity income), less any adjustments allowed.
Marion and Lake county residents filed one-fifth of the state’s tax returns and had a fifth of the state’s total federal AGI. However, both Allen (6.1 percent) and Hamilton (6.5 percent) counties paid a larger share of income taxes than Lake County. (2)
The average AGI for all filing types increased by 1.1 percent to $41,165 over the year. This increase did not keep pace with inflation, which was 2.3 percent for the same time period. Figure 2 is a good depiction of where wealth is located in the state, which not surprisingly encompasses the major metro areas. The most notable increase is the average value per return in Daviess County (17.3 percent), where 121 fewer returns were filed but the cumulative value of those returns rose by $65 million.

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Figure 3 looks at the median AGI. When there are some tax returns with very high incomes, the median is a closer measure of the “typical” taxpayer. (3)

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Figure 4 looks at the average tax due per return before withholding and credits are figured into the equation. (Note: Only returns with tax liability were used as a base for this calculation.) As we might expect, the counties with the highest average adjusted gross incomes also had the largest income tax liability. Hamilton County led the state with an average tax of $3,285 per return. However, this has dropped $52 since 2002.

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The income tax—just another piece of the economic puzzle but certainly an avenue that should be explored.
By Amber Kostelac, Data Manager
Indiana Business Research Center, Kelley School of Business, Indiana
University
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