Alabama taxpayers need clear guidance on filing and payment timing to avoid penalties and interest. Understanding the official deadlines helps you plan cash flow and complete returns accurately each year.
This guide details key dates, rules for extensions, and what to do if you cannot pay on time.
| Tax Type | Typical Filing Deadline | Payment Due Date | Extension Availability |
|---|---|---|---|
| Individual Income Tax | April 15 | April 15 | Available up to six months |
| Sales and Use Tax (Monthly) | 20th of month following reporting | 20th of month following reporting | Depends on permit terms |
| Withholding and Unemployment Tax | Last day of month following payroll | Last day of month following payroll | Available for eligible employers |
| Corporate Income Tax | 4th month, 15th day after year end | Same as filing date | Six-month extension possible |
| Property Tax Ad Valorem | October 1 | Last business day of October | Partial payments allowed |
Individual Income Tax Deadlines in Alabama
Standard Calendar Year Filing
For most individual residents, the Alabama personal income tax return is due on April 15. This aligns with the federal deadline for filing your return and remitting any tax due. If April 15 falls on a weekend or holiday, the deadline moves to the next business day.
Extension and Payment Rules
You can request an extension to file your individual return, but this does not extend the time to pay. Interest accrues on unpaid amounts from April 15, so submit payment by the original deadline even if you file later. The extension request must be made using the official forms before the original due date.
Business and Corporate Tax Deadlines
Corporate Income Tax
Corporations operating in Alabama must file and pay tax by the 15th day of the fourth month after the close of the taxable year. Most calendar-year businesses remit on or before April 15. The state allows a six-month filing extension under specific conditions, though any tax due remains due at the original deadline.
Sales and Use Tax
Businesses collecting sales tax must file and pay by the 20th day of the month following the reporting period. For example, February sales tax is due March 20. Electronic filing and payments are common, and permits dictate exact schedules for remittance.
Key Alabama Tax Dates Calendar
Critical Dates to Remember
Mark these dates on your calendar to stay compliant and avoid penalties:
- April 15: Individual income tax return and payment due
- October 1: Property tax assessments begin; payment deadline is October 31
- Monthly sales tax: Due on the 20th of the following month
- Employer withholding and unemployment taxes: Due by the last day of the month following payroll
Alabama Tax Compliance Takeaways
- Remember key deadlines: April 15 for individuals, monthly sales tax on the 20th, and corporate tax on the fourth month 15th.
- Pay any tax due by the filing deadline to avoid interest, even if you request an extension to file.
- Keep records of payments and confirm receipt with the Alabama Department of Revenue.
- Review your tax permit for specific filing frequencies and due dates that apply to your business.
- Use electronic filing and payment options to submit returns on time and reduce processing errors.
FAQ
Reader questions
What happens if I miss the April 15 individual income tax filing date?
Missing the deadline may result in late filing penalties and interest on unpaid tax. You can reduce penalties by filing and paying as soon as possible, and an extension may be available if requested before April 15.
Can I pay my Alabama taxes after the deadline if I apply for an extension?
An extension to file gives you more time to complete your return, but it does not extend the time to pay. Any tax due must still be paid by the original deadline to avoid interest and penalties.
How are sales tax deadlines determined for different businesses in Alabama?
Sales tax filing frequency is based on your permit and assigned reporting period, typically monthly or quarterly. The general rule is to file and pay by the 20th of the month following the reporting period, though specific dates appear on your tax permit.
What should I do if I cannot pay my full Alabama tax bill on time?
Explore payment plans or partial payments through the Alabama Department of Revenue to reduce penalties. Contact the department promptly to arrange a solution before the due date passes.