Alabama does something no other state on this site does: it lets you deduct the federal income tax withheld from you before working out what you owe Alabama. That one rule makes an Alabama paycheck behave backwards, because anything that raises your federal withholding lowers your state withholding.
On a $75,000 salary, a single filer keeps about $58,466, after $3,127 of Alabama income tax.
Your two tax bills push against each other
The withholding formula subtracts your annual federal withholding from your wages before applying Alabama’s rates. Since the top Alabama rate is 5%, every extra dollar of federal tax taken from you returns five cents of Alabama tax.
So the W-4 levers work in opposite directions here. Claim more dependents federally and your federal withholding falls, which raises your Alabama taxable income, which raises your Alabama withholding. Ask for $1,000 of extra federal withholding on Step 4(c) and your Alabama tax drops by $50. Neither effect is large, but it is the opposite of what anyone expects, and it means an Alabama worker who tunes their federal W-4 is quietly moving their state tax at the same time. Nobody at payroll will mention it.
It also means Alabama’s effective rate is lower than its 5% headline suggests, because a large slice of your income is sheltered by federal tax you were paying anyway. On $75,000 that shelter is $7,670.
A dollar of pay can cost you $75
Alabama’s dependent exemption is banded by income, and the bands are cliffs rather than tapers.
| Your gross income | Each dependent shelters | Three dependents shelter |
|---|---|---|
| $50,000 or less | $1,000 | $3,000 |
| $50,001 to $100,000 | $500 | $1,500 |
| Over $100,000 | $300 | $900 |
Work it through and it is startling. A parent of three on exactly $50,000 shelters $3,000. The same parent on $50,001 shelters $1,500. That single extra dollar of pay costs about $75 in Alabama tax, because the exemption halves rather than steps down gradually.
The standard deduction tapers too, though more gently: it falls in steps from $4,500 for a single filer as income rises above about $26,000, reaching its floor of $4,000. Alabama publishes that as a lookup table hundreds of rows long, but it is a formula wearing a disguise.
Head of family does not follow married
Alabama’s rate table has two columns. The wide one, with 2% on the first $1,000 and 4% on the next $5,000, is for married couples filing jointly. Everyone else uses the narrow one: 2% on the first $500, 4% on the next $2,500, 5% above $3,000.
Head of family sits in the narrow column, which is easy to get wrong by assuming it tracks married. It does get the larger personal exemption and a bigger standard deduction, but not the wider brackets. That pairing is Alabama’s own and it does not match how most states treat the status.
What is not in this calculator
Many Alabama cities levy an occupational tax on people who work there, most commonly 1%, including Birmingham. The Department of Revenue does not set, administer or publish them and tells employers to contact the city or county directly, so there is no single list to read them from and they are deliberately absent here.
If your workplace charges one, your take-home is lower than shown by that percentage of your gross. Nothing else is withheld at state level: Alabama has no disability contribution and no paid family leave contribution, and unemployment insurance is an employer tax.
The rest is federal: about $7,670 of income tax, which your W-4 controls and which Alabama then lets you deduct, and $5,738 of Social Security and Medicare, which it does not.
Alabama paycheck calculator FAQ
Yes. The withholding formula subtracts your annual federal withholding from your wages before applying Alabama’s rates, which is unusual. At the 5% top rate, every extra dollar of federal tax withheld from you returns five cents of Alabama tax, so the two move in opposite directions.
Probably a dependent exemption cliff. Alabama gives $1,000 per dependent while your gross income is $50,000 or less, $500 between $50,001 and $100,000, and $300 above that. It halves rather than tapers, so a parent of three crossing $50,000 by a single dollar pays about $75 more in Alabama tax.
2% on the first $500 of taxable income, 4% on the next $2,500 and 5% above $3,000 for single filers, head of family and married filing separately. A married couple filing jointly gets a wider table: 2% on the first $1,000, 4% on the next $5,000 and 5% above $6,000.
No. Many Alabama cities charge an occupational tax on people who work there, most commonly 1% and including Birmingham. The Department of Revenue does not publish them and directs employers to the city or county, so there is no single source to take them from. If yours charges one, your take-home is lower than shown.