Sales Tax:
Source:  State of Illinois Department of Revenue and the Regional Transportation Authority
The sales tax figures shown  do not include Use Tax collections. Each year the Use Tax collected in the 6-county region and distributed to RTA.   The RTA sales tax and its distribution formula is authorized by Illinois statute. The sales tax rates are 1.0%.  in Cook County and 0.25% in the 5 collar counties. According to the statutory formula, the RTA retains 15% of the sales tax and passes on the remaining 85% to the CTA, Metra and Pace. Of this 85%, CTA receives 100% of the City of Chicago tax and 30% of the suburban Cook County tax, Metra receives 55% of suburban Cook County tax and 70% of the tax collected in the five collar counties, and Pace receives 15% of the suburban Cook County tax and 30% of the collar counties' tax. 

Effective April 1, 2008, the RTA sales tax in Cook County increased from the equivalent of 1.0% to 1.25%. 
The amounts distributed to the CTA, Metra, Pace, ADA Paratransit, the Suburban Community Mobility Fund (SCMF), and the Innovation, Coordination, and Enhancement Fund (ICE) are estimated based on results for the City of Chicago and Suburban Cook County.  The SCMF amount is included in the Pace total.

Effective April 1, 2008, the RTA sales tax in the Collar Counties increased from 0.25% to 0.75%.  Each county retains half of the proceeds of the 0.5% increase collected in the county.  These proceeds can only be utilized for transportation (highways and transit) and/or public safety purposes.  The amounts distributed to the CTA, Metra, Pace, ADA Paratransit, the Suburban Community Mobility Fund (SCMF), the Innovation, Coordination, and Enhancement (ICE) Fund, and the County are estimated based on results for the corresponding Collar County.  The SCMF amount is included in the Pace total.

Values in Cook County include both base and replacement tax.