What the cost-of-living calculators miss
Most tools flatten the Austin versus Chicago comparison into a single percentage. That number hides almost everything that actually matters.
On the single metric of home price, Chicago beats every other major US city. Median home sits at $312,000 in the city of Chicago, versus $548,000 in Austin. That is a $236,000 delta, a genuine affordability story with no asterisk on housing stock quality.
The asterisk shows up in property tax. Cook County effective rate runs 2.02%, highest of any major metro in the country. A $310,000 Chicago home pays about $6,260 a year in property tax. A $550,000 Austin home pays about $9,900. The Chicago property tax bill is lower in absolute dollars despite the higher rate, but the rate means any home appreciation hits your tax bill hard.
Illinois has a 4.95% flat state income tax. Texas has zero. On a $200,000 single earner, Chicago costs roughly $9,800 more per year in state tax. That offsets most of the housing saving over a decade.
Sales tax in Chicago is 10.25% combined, among the highest in the country. Austin is 8.25%. Every taxable dollar costs two cents more in Chicago.
The total annual cost of living for a middle-class family lands roughly even between the two cities once you net everything. Chicago wins on purchase price; Austin wins on ongoing operating cost.