Alabama's three-band income tax
Alabama runs one of the simplest state income taxes in the country: three bands, a top rate of 5%, and thresholds that have not moved in decades. This calculator covers the state portion only.
Two features make Alabama unusual, and both work in the taxpayer's favour at higher incomes. They are covered below.
The bands
| Taxable income | Rate |
|---|---|
| First $500 | 2% |
| $500 – $3,000 | 4% |
| Above $3,000 | 5% |
The top band starts at $3,000. Practically everyone with a job is in it, which makes the scale progressive in name and flat in effect.
Worked example: $50,000 of gross income
The standard deduction is $3,000 only up to $25,500 of income; above that it falls by $25 for every $500, reaching its floor of $2,500 at $35,500. Add the $1,500 personal exemption and taxable income is $46,000:
- First $500 at 2% = $10
- Next $2,500 at 4% = $100
- Remaining $43,000 at 5% = $2,150
Total: $2,260, which is 4.52% of gross. The marginal rate is 5%. The two figures are unusually close precisely because the top band starts so low.
The federal deduction that makes Alabama cheaper than it looks
Alabama is one of a handful of states that lets you deduct federal income tax paid from state taxable income. On a $50,000 salary that federal liability might be around $4,000, which would cut the state bill by roughly $200.
The effect grows with income: the more federal tax you pay, the larger the state deduction. This calculator does not model it, so treat the result as an upper bound.
What sits on top
Alabama has no state property tax of consequence but does allow local occupational taxes. Birmingham levies 1% on wages, Gadsden 2%. If you work in a city with one, add it to everything below.
What this calculator leaves out
Federal income tax, Social Security and Medicare, the federal income tax deduction described above, local occupational taxes, and all credits. It is the state income tax line alone.
The deduction most calculators miss
Alabama is one of a handful of states that let you deduct the federal income tax you paid from state taxable income. On $50,000 single that federal bill is roughly $4,000, which takes Alabama taxable income down to about $42,000 and the state tax to about $2,060. This calculator does not apply it, because it depends on your federal return; for most filers it cuts the state bill by 8 to 12%.
Alabama against its neighbours
At $50,000 the state bill of $2,260 sits in the middle of the region. Florida and Tennessee levy no income tax at all, so the same salary keeps the full amount. Georgia and Mississippi both run rates close to Alabama's, while Louisiana's brackets reach a lower top rate.
The comparison changes at higher incomes. Because Alabama's top band starts at $3,000, a $200,000 earner pays nearly the flat 5% on everything, while states with steeper progressive scales take considerably more. Alabama is expensive for low earners and cheap for high ones.
Withholding against what you actually owe
Your employer withholds Alabama tax each pay period using the allowances on your A-4 form. Those allowances are a rough estimate, so the amount withheld across a year rarely equals the $2,310 the calculation above produces.
Over-withholding means a refund, which is an interest-free loan to the state. Under-withholding means a bill in April. If the gap is large in either direction, the fix is the A-4 rather than the return.
Related calculators
- State tax calculator — the same calculation for other states
- Tax bracket calculator — the federal layer
- Salary calculator — what actually reaches your account