Industries Metros Compare Paycheck Cost of Living Relocation Offer Compare
Interstate Relocation: Colorado → Illinois

Moving from Colorado to Illinois: Cost & Tax Comparison

Compare state income tax savings, HUD rent differentials, and household purchasing power adjustments when relocating from Colorado to Illinois.

Data updated · Sources: HUD FY 2027 Fair Market Rents, EPI 2026 Family Budget, 2026 tax tables · Methodology

Effective Tax Rate Change +1.1 pts IL vs CO, $100k single
Annual Tax Savings -$1,114 Federal + FICA + state, $100k
1BR Rent Change -24.7% Avg 1BR $1,053 vs $1,399/mo
Net Annual Difference +$3,036 Tax savings + 1BR rent savings

What changes when you move from Colorado to Illinois

Colorado has a flat 4.4% income tax and Illinois has a flat 4.95% income tax. On a $100,000 salary a single filer pays $3,692 in state income tax in Colorado and $4,805 in state income tax in Illinois. With federal income tax and FICA unchanged, total tax rises by $1,114 a year after the move. HUD's one-bedroom Fair Market Rent averages $1,399 a month across Colorado's metro areas and $1,053 across Illinois's (-24.7%). Pay differs too: the BLS median wage across all occupations, weighted by employment in each state's metros, is $60,171 in Colorado and $54,104 in Illinois. City and county income taxes, which some localities add, are not included in these state-level figures; the metro routes below include them.

Origin State: Colorado

Colorado Paycheck & Living Costs

Paycheck Living Cost Salaries
Destination State: Illinois

Illinois Paycheck & Living Costs

Paycheck Living Cost Salaries
Reverse Corridor Analysis:
Moving from Illinois to ColoradoNational Relocation Hub

Metropolitan Corridors Between Colorado & Illinois

Denver-Aurora-Centennial, CO → Chicago-Naperville-Elgin, IL-IN On $100k: $1,045 more tax and $612 less 1BR rent a year
Compare
Denver-Aurora-Centennial, CO → Peoria, IL On $100k: $1,045 more tax and $10,440 less 1BR rent a year
Compare
Colorado Springs, CO → Chicago-Naperville-Elgin, IL-IN On $100k: $1,114 more tax and $4,800 more 1BR rent a year
Compare
Colorado Springs, CO → Peoria, IL On $100k: $1,114 more tax and $5,028 less 1BR rent a year
Compare
Moving from Colorado to Illinois: Cost & Tax Comparison Overview

Moving from Colorado to Illinois on a $100,000 salary: pay $1,114 more in total taxes per year; average one-bedroom rent is $1,053 vs $1,399 a month (HUD FMR).

Quick answers
How much money will I save moving from Colorado to Illinois?

For a single filer earning $100,000 with no local income tax, total federal, FICA and state taxes are $1,114 higher in Illinois than in Colorado (1.1 percentage points of gross pay). The average HUD one-bedroom Fair Market Rent across Illinois's metros is $1,053 a month, versus $1,399 in Colorado (-24.7%). Taxes and one-bedroom rent combined change by +$3,036 a year.

What are the key tax differences between Colorado and Illinois?

Colorado: Flat Tax, top rate 4.4%. Illinois: Flat Tax, top rate 4.95%. Federal income tax and FICA are the same in both states.