keyword

illinois state tax

Monthly search volume and cost-per-click data for "illinois state tax" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=illinois+state+tax&country=us" +--------------+------------------+ | volume | 14,800 | | cpc | $9.08 | | competition | 0.01 | | country | US | | updated | 2026-06-21 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
illinois state income tax	14,800	$9.08	20/20
state taxes illinois	14,800	$3.45	20/20
illinois tax	12,100	$11.25	20/20
illinois taxes	12,100	$7.59	20/20
taxes illinois	12,100	$11.25	20/20
taxes in illinois	12,100	$7.17	20/20
illinois income tax	6,600	$8.07	20/20
illinois income tax rate	5,400	$0	18/20
illinois state income tax rate	4,400	$7.47	20/20
does illinois have state income tax	1,600	$0	18/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=illinois+state+tax&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt