Unlike most comparisons involving California, this one is between two states that both tax income — Arizona simply does it at a flat 2.5%, one of the lowest rates in the country, against California’s progressive schedule. Here is what that looks like at four salary levels, computed exactly the way our salary calculator does it.
At $75,000
| California | Arizona | |
|---|---|---|
| Federal tax | $7,670.00 | $7,670.00 |
| State tax | $1,726.53 | $1,472.50 |
| FICA | $5,737.50 | $5,737.50 |
| Net take-home | $59,865.97 | $60,120.00 |
Arizona take-home is $254.03 higher — about $21.17 more per month.
At $100,000
| California | Arizona | |
|---|---|---|
| Federal tax | $13,170.00 | $13,170.00 |
| State tax | $3,710.68 | $2,097.50 |
| FICA | $7,650.00 | $7,650.00 |
| Net take-home | $75,469.32 | $77,082.50 |
Arizona take-home is $1,613.18 higher — about $134.43 more per month.
At $150,000
| California | Arizona | |
|---|---|---|
| Federal tax | $24,734.00 | $24,734.00 |
| State tax | $8,360.68 | $3,347.50 |
| FICA | $11,475.00 | $11,475.00 |
| Net take-home | $105,430.32 | $110,443.50 |
Arizona take-home is $5,013.18 higher — about $417.77 more per month.
At $250,000
| California | Arizona | |
|---|---|---|
| Federal tax | $51,304.00 | $51,304.00 |
| State tax | $17,660.68 | $5,847.50 |
| FICA | $15,514.00 | $15,514.00 |
| Net take-home | $165,521.32 | $177,334.50 |
Arizona take-home is $11,813.18 higher — about $984.43 more per month.
The pattern worth noticing
This pair inverts the usual shape. At $75,000 the two states are close enough that income tax alone should not decide anything — a couple of hundred dollars a year. The divergence is almost entirely a high-earner phenomenon: by $250,000 the annual difference is larger than the entire California tax bill at $75,000, because a flat 2.5% simply cannot keep pace with brackets that reach 9.3%. At $75,000 the difference is about $21.17 a month; at $250,000 it is $984.43 a month.
What this comparison doesn’t include
State income tax is one line in a much larger budget. Housing costs, sales tax, property tax rates, and general cost of living all move independently of income tax and can comfortably outweigh it in either direction — a smaller state tax bill does not automatically mean more money left at the end of the month once rent or a mortgage is paid. This comparison isolates income tax because that is the part with a precise, calculable answer.
A note on precision: these figures apply each state’s bracket schedule to your federal taxable income. Both states tax income here, so both columns carry a state figure. States also have their own credits, exemptions and deductions that this model does not carry, so treat the numbers as a close estimate of the gap rather than a filled-in tax return. The methodology page sets out exactly what is and is not modelled.
Run your own numbers
Every figure above assumes a single filer taking the standard federal deduction and nothing else. Your own result will move with filing status, deductions, and your actual salary — put your real number into the salary calculator for California, Arizona, or any other state, and you can share or bookmark the result straight from the page.