What the cost-of-living calculators miss
Most tools say Austin is 40 to 50 percent cheaper than San Francisco. That is true on the sticker price. It is not true on the monthly cash flow once you run the full ledger.
The salary math is the clean part. On a $200,000 single software engineer salary, a California resident pays roughly $14,500 in state income tax in 2026. A Texas resident pays zero. That is a real $14,500 a year that lands back in your checking account, and it compounds fast because it is post-federal.
The housing math is where the headline starts to unravel. A $548,000 Austin home at a 1.80% effective property tax rate is $9,864 a year. A $1.38M San Francisco home at 0.71% is $9,798 a year. Your property tax bill in absolute dollars is the same. You just have a much bigger house in Austin.
But only if you are buying new. A San Francisco homeowner under Proposition 13 who bought in 2012 might pay property tax on an assessed value that has only been allowed to rise 2% a year since they closed. Their actual property-tax bill can easily run half of what a new Austin buyer pays. Prop 13 is a transfer from new buyers to long-term owners, and it is why so many San Franciscans who could move to Austin for more house do not: they would be trading a frozen tax assessment for a fresh one.
Insurance is the second surprise. Texas homeowners insurance averages $4,456 a year because the state has the worst combined hail, wind, and Gulf-coast hurricane exposure in the country, and the reinsurance market has spent the last three years repricing that risk. California homeowners insurance averages $1,429. Earthquake coverage is sold separately and most San Franciscans skip it. Your Austin mortgage will come in several hundred dollars a month higher on insurance alone than the home price comparison suggests.
Utilities look similar on the monthly averages, but the Austin bill is concentrated in five months. Expect your summer electric bill to run $280 to $400 from May through October if you have a typical three-bedroom with central AC running. SF electric tracks around $210 but with almost no seasonal spike because nobody has central air.
Groceries, takeout, childcare, healthcare, gym memberships, and streaming services all run within about 5 percent of each other in the two cities. Restaurants split: Austin is cheaper at the median per-plate, San Francisco has a deeper bench of fine dining that you will pay for if you want it.
The honest bottom line on a $200,000 single earner who buys a new home in each city: about $28,000 a year in housing-plus-tax savings by moving to Austin. Real money. Life-changing over a decade. And roughly half of what the first page of Google promises you.