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.
What Makes Alabama Unique
Alabama requires Federal Income Tax (FIT) to be calculated simultaneously with state income tax — a setup requirement unique among U.S. states.
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 |
How to Set Up Alabama Payroll Withholding
Follow these steps to begin withholding Alabama payroll taxes for your employees:
1. Obtain your Federal EIN at irs.gov if you don’t already have one
2. Register your business with the Alabama Department of Revenue at myalabamataxes.alabama.gov
3. Register for SUTA with the Alabama Department of Labor at labor.alabama.gov
4. Submit a Netchex tax team request to enable Alabama SIT and SUTA in your company
5. Have each employee complete their tax forms with an automated onboarding task in Netchex, digitally storing tax forms
6. Configure any additional tax settings in the employee profile
Once setup is complete in Netchex, the system will automatically calculate, withhold, and remit all Alabama payroll taxes on your behalf.
Alabama Payroll Tax Filing Deadlines
The following are general filing and deposit deadlines for Alabama payroll taxes. Deadlines may vary based on your employer size and deposit frequency. Always verify current schedules at Alabama Department of Revenue.
|
Tax |
Deposit Frequency |
Typical Due Date |
| SIT Withholding | Monthly | 15th of the following month |
| SIT Withholding | Quarterly (small employers) | Last day of month following quarter |
| Annual Reconciliation (A-3) | Annual | January 31 |
| SUTA | Quarterly | April 30, July 31, Oct 31, Jan 31 |
Note: Deadlines are subject to change. Always confirm current requirements directly with Alabama Department of Revenue at https://revenue.alabama.gov/.
Resources & Links
The following official resources will help you stay current on Alabama payroll tax requirements:
Frequently Asked Questions: Alabama Payroll Taxes
Does Alabama have local payroll taxes?
No. Alabama does not impose local payroll taxes at the city or county level. Only state income tax (SIT) and SUTA apply.
What is Alabama’s SUTA wage base?
Alabama’s SUTA wage base is $8,000 per employee per year. Verify the current rate at labor.alabama.gov.
What withholding form do Alabama employees complete?
Employees complete Form A-4, the Alabama Employee’s Withholding Exemption Certificate.
What is Alabama’s supplemental withholding rate?
Alabama uses a flat supplemental withholding rate of 5.0%.
How do I set up Alabama payroll withholding?
Register with the Alabama DOR, collect Form A-4 from employees, then submit a Netchex tax team request to enable Alabama SIT.
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.
Let Netchex Handle the Complexity
Staying compliant with payroll taxes doesn’t have to be stressful. Netchex automatically calculates, withholds, and files your payroll taxes so you can focus on what matters most — your people.
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Choosing a partner who simplifies payroll and integrates with your HR, benefits, and time tracking systems changes everything.
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