To preserve the same standard of living you have today in Los Angeles on $75,000, you would need $52,410 in Chicago. That is a -30.1% composite shift; the line-item breakdown below shows where the gap actually concentrates. Source: C2ER ACCRA, BLS CPI weights.
The equivalent-salary calculation scales your Los Angeles salary by the ratio of the two composite indexes (116 ÷ 166 = 0.699). It answers "how much do I need to earn in Chicago to maintain the same consumer-spending power I have today in Los Angeles?"
| Los Angeles salary | Equivalent in Chicago | Difference |
|---|---|---|
| $50,000 | $34,940 | -$15,060 |
| $75,000 | $52,410 | -$22,590 |
| $150,000 | $104,819 | -$45,181 |
Composite indexes hide the within-budget variance that often matters more than the headline. Housing in Los Angeles can be far above the city's composite, while groceries sit closer to par. The same is true for Chicago. Compare the five categories below to see where your specific budget mix changes the picture.
| Category | Los Angeles | Chicago | Delta |
|---|---|---|---|
| Housing Rent + median home price | 215 | 132 | -38.6% |
| Groceries Supermarket basket | 110 | 100 | -9.1% |
| Transportation Fuel, transit, parking | 132 | 108 | -18.2% |
| Healthcare Doctor visits, prescriptions | 103 | 99 | -3.9% |
| Utilities Electric, gas, internet | 121 | 112 | -7.4% |
| Composite | 166 | 116 | -30.1% |
The composite index gap between Los Angeles, CA and Chicago, IL is real: roughly 30 index points separate the two metros on C2ER ACCRA's published quarterly cost-of-living survey. Translated to a household budget, that gap shows up most loudly in housing (39% lower in Chicago), with secondary effects on utilities and groceries. Healthcare and transportation move less between the two cities — those line items track regional patterns more than metro-specific ones.
What this means for a relocation decision: every dollar of Los Angeles salary stretches further in Chicago, but the stretch is not uniform across categories. A family-of-four budget heavy on housing and groceries sees a bigger improvement than a single renter who already keeps rent low and spends mostly on dining and travel. Sketch your actual category mix before deciding what a "fair" pay adjustment looks like — most remote-pay zone formulas under-credit the housing-heavy household and over-credit the dining-heavy one.
Consumer-price indexes exclude income tax, so the equivalent-salary number above is a pre-tax comparison. Layered on top: California has a top-marginal or flat state income tax of 9.30%, while Illinois's is 4.95%. At a $75,000 salary, that translates to roughly $6,975 of state tax owed in California versus $3,713 in Illinois — a $3,263 difference that no consumer-price index captures.
Plug your real numbers into the take-home pay calculator to see the after-tax difference at your filing status and salary. Federal withholding is constant; the state side is what changes when you cross state lines. See the take-home pay calculator or the state-by-state take-home pay article for the precise after-tax number.
The data says no. Composite indexes: Los Angeles 166, Chicago 116. Chicago is roughly 30% less expensive overall, with the housing sub-index doing most of the work and other categories contributing smaller deltas.
Approximately $52,410. The math: $75,000 times the index ratio 0.70 (which is 116/166) equals the salary in Chicago that preserves your real-terms spending power. State tax sits on top — handled separately in the sidebar above.
Housing is the largest line item in any cost-of-living comparison and the one with the most metro-to-metro variance. Los Angeles's housing sub-index sits at 215; Chicago's is 132. That gap reflects rent and home-price differences captured in the C2ER ACCRA quarterly survey. Groceries (Los Angeles 110 vs Chicago 100), transportation (132 vs 108), and utilities (121 vs 112) all contribute, but housing is the dominant factor.
They are tracked separately. The cost-of-living composite measures consumer prices; state income tax is a different axis. California and Illinois can disagree on tax by several thousand dollars per year at typical salaries, and that delta stacks with — not into — the consumer-price gap above.