Cost of living · 7 min read
Cost of living: how much income do you need in your city?
Take your essential monthly costs, divide by 0.5, and multiply by twelve. That is roughly the gross salary you need to live comfortably in a given city, one where necessities take about half your take-home pay. If your essentials run $2,500 a month, you are looking at around $75,000.
The formula, step by step
- Add up essential monthly costs in the city you are pricing.
- Divide by 0.5 to get the take-home pay those costs imply.
- Divide by roughly 0.78 to convert take-home back to gross, adjusted for that state's income tax.
- Multiply by 12.
Skip the arithmetic with the cost of living calculator, which compares your current costs against a target city and shows the salary you would need to break even.
Which categories actually move the number
Housing
30–45% of the gap
The single biggest driver. Rent for the same square footage can differ threefold between metros while everything else differs by a quarter.
Taxes
0–10% of gross
State and local income tax is often left out of city comparisons, and it is one of the few differences that applies to every dollar you earn.
Transport
$200–$900/mo
A city with usable transit can remove a car payment, insurance, and fuel, frequently $600 a month or more.
Groceries & utilities
±15%
Real but modest variation. Rarely the reason a move works or fails.
Healthcare & childcare
highly variable
Childcare in particular can differ by $1,000 a month and is the category most often missing from published indexes.
Comparing a job offer in another city
The mistake is comparing salaries. Compare what is left after essentials. A $95,000 offer in a city where your essentials cost $3,800 a month leaves less than a $78,000 offer where they cost $2,400, and the second one has a faster savings runway despite the smaller number on the letter.
Price the housing side properly with the rent affordability calculator before anything else, since housing is where most of the difference lives.
Moving out for the first time
If this is your first place rather than a relocation, the salary question is really a timing question, deposits, furniture, and the first-month overlap usually decide it. The move out calculator covers that, and am I ready to move out? walks through the readiness checks.
FAQ
How much income do I need to live comfortably?
A workable rule is take your essential monthly costs, divide by 0.5, and multiply by 12, that gives a gross salary where needs sit near half your take-home pay. If essentials are $2,500 a month, that points to roughly $75,000 gross.
What does a cost of living calculator actually compare?
Housing, groceries, transport, healthcare, utilities, and taxes. Housing accounts for most of the difference between cities; the other categories vary far less than people expect.
Is a 20% raise worth moving to a more expensive city?
Only if the cost difference is under 20%, and state income tax needs to be in the comparison. Moving from a no-income-tax state can quietly erase five to nine percent of a raise.
How do I compare two cities fairly?
Compare what you would actually spend, not published averages. Price a real apartment you would rent, your real commute, and your real insurance in each city, then compare the totals against each salary offer.
Price your own city
Compare your real costs and see the salary they imply. Nothing leaves your browser.
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