Bill Title: Amends the Illinois Income Tax Act. Increases the amount of the research and development credit by calculating the increase in the taxpayer's research activities in the State over 50% (currently, 100%) of the qualifying expenditures for the base period. Effective immediately.

Sponsorship: Partisan Bill (Republican 2)

Status: (Introduced - Dead) 2026-03-02 - Added Co-Sponsor Rep. Tony M. McCombie [HB5527 Detail]

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Bill Drafts

Revision	Date	Format	Source	View
Introduced	2026-02-09	HTML/Text	Link	View

Amendments

Amendment	Date	Disposition	Format	Source	View
No bill amendments currently on file for Illinois HB5527

Supplemental Documents

Title	Description	Date	Format	Source	View
No supplemental documents for Illinois HB5527 currently on file.