Dupage Policy Journal

DuPage County taxpayers will see a total of $557 million in state income tax increases after SB 9, a tax hike measure, passed the Democrat-controlled Illinois State Senate to become law.

The community in DuPage County that will see the largest increase is Hinsdale, with a $35.9 million total increase and a $4,494 average increase.

Other communities that will see large collective increases include Central Naperville ($32 million increase), Elmhurst ($31.8 million increase), Aurora/Southwest Naperville ($29.5 million increase) and Glen Ellyn ($26.7 million increase).

Taxpayers from Hinsdale, Oak Brook ($3,822), Wayne ($2,298), Clarendon Hills ($2,059) and Willowbrook/Burr Ridge ($1,690) will see the highest average increases.

Senate Bill 9, a revenue bill that would generate $5.4 billion by raising the income tax rate to 4.95 percent from 3.75 percent and the corporate tax rate to 7 percent from 5.25 percent, passed 36-18 on Tuesday. It passed the House on Sunday. Gov. Bruce Rauner then vetoed the bill, but the Senate quickly overrode his veto. The House is expected to vote on an override Thursday.

LGIS looked at 2014 income taxes paid by zip code to create a ranking of the highest-paying DuPage County communities.

Its analysis looked at the percentage of total state income taxes paid by zip code, as reported by the Illinois Department of Revenue. It then applied that percentage to the amount Senate Democrats expect their tax hike will raise to calculate an average increase.

The analysis used 2014 tax return data, which is the latest available and also represents a year in which state income taxes were higher-- five percent, or approximately the level to which the Democrats are hoping to raise them.

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Top income tax-paying communities in DuPage County

Which communities pay the highest income taxes in DuPage County?

Ranking	Communities	Zip	Average State Income Tax Increase	Total Returns filed by Zip
1	Hinsdale	60521	$4,494	7,984
2	Oak Brook	60523	$3,822	5,287
3	Wayne	60184	$2,298	1,192
4	Clarendon Hills	60514	$2,059	4,607
5	Willowbrook / Burr Ridge	60527	$1,690	14,241
6	Aurora / Naperville (Southwest)	60564	$1,646	17,928
7	Naperville (Central)	60540	$1,642	19,518
8	Glen Ellyn	60137	$1,483	17,991
9	Elmhurst	60126	$1,486	21,386
10	Wheaton (South)	60189	$1,341	15,132
11	Naperville (Southeast)	60565	$1,313	18,690
12	Wheaton (North)	60187	$1,210	12,486
13	Downers Grove (North)	60515	$1,215	13,592
14	Aurora (Northeast) / Eola	60502	$1,197	9,664
15	Winfield	60190	$1,052	5,589
16	Medinah	60157	$1,089	1,309
17	Naperville (North)	60563	$1,040	17,295
18	Itasca	60143	$956	5,336
19	Downers Grove (South)	60516	$900	14,726
20	Lisle	60532	$934	13,942
21	Darien	60561	$871	12,183
22	Bartlett	60103	$916	19,609
23	Bloomingdale	60108	$861	11,301
24	Roselle	60172	$775	12,462
25	Warrenville	60555	$756	6,808
26	Woodridge	60517	$763	15,954
27	Villa Park / York Center / Oakbrook Terrace	60181	$758	14,316
28	York Center	60181	$758	14,316
29	Lombard	60148	$730	25,523
30	Westmont	60559	$746	11,964
31	Aurora (Southeast) / Fox Valley	60504	$736	16,389
32	Carol Stream	60188	$705	21,119
33	West Chicago	60185	$680	15,867
34	Wood Dale	60191	$610	7,454
35	Addison	60101	$569	17,849
36	Bolingbrook (East)	60440	$553	22,961
37	Bensenville	60106	$498	9,705
38	Glendale Heights	60139	$502	15,602
39	Hanover Park	60133	$490	16,995

Source: Illinois Department of Revenue; Blockshopper.com

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How much more will your community pay?

With state income taxes increased to 4.95 percent from 3.75 percent, how much more will taxpayers in your community pay for state government?

Ranking	Communities	Zip	Estimated State Income Tax Increase
1	Hinsdale	60521	$35,881,230
2	Naperville (Central)	60540	$32,056,075
3	Elmhurst	60126	$31,774,713
4	Aurora / Naperville (Southwest)	60564	$29,506,041
5	Glen Ellyn	60137	$26,676,240
6	Naperville (Southeast)	60565	$24,547,747
7	Willowbrook / Burr Ridge	60527	$24,066,011
8	Wheaton (South)	60189	$20,292,064
9	Oak Brook	60523	$20,207,865
10	Lombard	60148	$18,630,805
11	Naperville (North)	60563	$17,991,627
12	Bartlett	60103	$17,953,720
13	Downers Grove (North)	60515	$16,521,041
14	Wheaton (North)	60187	$15,109,312
15	Carol Stream	60188	$14,892,264
16	Downers Grove (South)	60516	$13,249,171
17	Lisle	60532	$13,018,065
18	Bolingbrook (East)	60440	$12,707,722
19	Woodridge	60517	$12,166,387
20	Aurora (Southeast) / Fox Valley	60504	$12,060,418
21	Aurora (Northeast) / Eola	60502	$11,565,985
22	Villa Park / York Center / Oakbrook Terrace	60181	$10,846,796
23	York Center	60181	$10,846,796
24	West Chicago	60185	$10,782,565
25	Darien	60561	$10,608,055
26	Addison	60101	$10,159,984
27	Bloomingdale	60108	$9,729,665
28	Roselle	60172	$9,662,905
29	Clarendon Hills	60514	$9,486,107
30	Westmont	60559	$8,926,074
31	Hanover Park	60133	$8,333,750
32	Glendale Heights	60139	$7,837,367
33	Winfield	60190	$5,879,128
34	Warrenville	60555	$5,147,828
35	Itasca	60143	$5,103,850
36	Bensenville	60106	$4,837,216
37	Wood Dale	60191	$4,544,948
38	Wayne	60184	$2,739,292
39	Medinah	60157	$1,425,966
	TOTAL		$557,772,795

Sources: Illinois Department of Revenue; Blockshopper.com; Illinois Senate Democrats

*Assumes tax increase will meet Senate Democrats' projections.