Overview
Alabama is unique in that it requires Federal Income Tax (FIT) to be calculated simultaneously with state income tax. The state uses a progressive rate structure with multiple brackets, and withholding depends on the employee’s filing status, number of dependents, and additional allowances claimed on Form A4.
State Income Tax (SIT)
Alabama uses a progressive income tax with multiple brackets. Withholding is based on the employee’s filing status and the number of dependents and allowances from Form A4. The state also factors in the federal income tax liability when determining state withholding, which means FIT must be set up alongside Alabama SIT in your payroll system.
| Tax Structure | Progressive with multiple brackets |
| State Withholding Form | Form A4 |
| Filing Statuses | 0, S, MS, M, H |
| Supplemental Rate | 5% |
| Special Requirements | FIT must be calculated simultaneously with Alabama SIT |
Supplemental Wages
Alabama supports the following supplemental calculation methods. When using the flat method, the supplemental rate is 5%.
Employer State Unemployment Tax (SUTA)
Your assigned SUTA rate will be based on your company’s experience with unemployment claims. New employers typically start at the default rate of 2.7%.
| Tax Type | Employer-paid only |
| Default New Employer Rate | 2.7% |
| Rate Assignment | Experience-rated; assigned annually by the state |
Other Taxes & Obligations
Alabama does not currently impose significant additional state-level payroll taxes beyond SIT and SUTA. This keeps payroll relatively streamlined compared to states with multiple layers of tax obligations.
Disclaimer: This content is provided for general informational purposes only and does not constitute legal, tax, or accounting advice. Netchex does not provide tax or legal guidance and makes no representations regarding the accuracy or applicability of this information. Laws and regulations may change. The information on this page reflects payroll tax guidelines as of March 2026.
For the most current requirements, please refer to: Alabama Department of Revenue
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