Alabama Form 40ES – Estimated Individual Income Tax Voucher
Last reviewed: 2025-11-12
Use the Alabama Tax Form Calculator Form AL-40ES: Alabama Form 40ES – Estimated Individual Income Tax Voucher as a stand alone tax form calculator to quickly calculate specific amounts for your 2026 Alabama state tax return. Alternatively, you can use one of our Combined Federal and State Tax Estimators to quickly calculate your salary, tax, and take-home pay.
Form AL-40ES, titled “Declaration of Estimated Tax / Voucher”, is used by Alabama individual taxpayers to declare and pay quarterly estimated income taxes for the upcoming tax year. According to the Alabama Department of Revenue (ADOR), you must file Form 40ES if you anticipate owing at least $500 in state income tax after withholding and credits, and expect your withholding and credits to be less than the smaller of 90 % of the coming year’s tax or 100 % of the prior year’s tax (110 % for high-income filers).
Estimated payments ensure that your tax is paid progressively throughout the year, reducing the risk of large year-end balances and underpayment penalties. These payments operate similarly to the federal Form 1040-ES system, with Alabama-specific rules and due dates.
How to Complete Alabama Form 40ES
- Determine if you must file: You generally need to make estimated payments if you expect to owe $500 or more after subtracting withholding and credits, and your withholding/credits are less than 90 % of your current-year tax or 100 % (110 % for higher earners) of your previous-year tax.
- Enter taxpayer information: Provide your Social Security Number, spouse’s SSN if filing jointly, full names, and address. Check the fiscal-year box if applicable.
- Estimate your taxable income: Use ADOR worksheets to calculate your expected adjusted gross income, deductions, exemptions, and tax credits. Subtract withholding and credits carried forward.
- Compute installment payments: Divide your total estimated tax due into four payments, due on April 15, June 15, September 15, and January 15 of the following year. If you start mid-year, divide the remaining tax across the remaining vouchers.
- Mail each voucher with payment: Detach the appropriate voucher and mail it with your check or money order payable to the Alabama Department of Revenue, P.O. Box 327485, Montgomery AL 36132-7485.
Self-employed individuals, landlords, investors, or others with non-withheld income should review their estimated obligations regularly to prevent penalties.
| TAXPAYER INFORMATION | ||
| 1 | Primary taxpayer’s Social Security Number | |
| 2 | Spouse’s Social Security Number (if joint) | |
| 3 | Taxpayer name(s) | |
| 4 | Mailing address (street, city, state & ZIP code) | |
| 5 | Check here if you are filing a fiscal-year voucher | |
| 6 | Beginning date of fiscal year (if applicable) | |
| 7 | Ending date of fiscal year (if applicable) | |
| 8 | Vendor code (if applicable) | |
| 9 | Estimated Alabama income tax (Worksheet line 11) | |
| 10 | Amount of Alabama income tax you estimate will be withheld from your wages | |
| 11 | Estimated tax due (line 9 minus line 10) | |
| 12 | Amount you are paying with this voucher | |
Key Deadlines for 2026 Estimated Payments
- April 15, 2026
- June 15, 2026
- September 15, 2026
- January 15, 2027
If a due date falls on a weekend or state holiday, the next business day applies.
Understanding Underpayment Penalties
Failing to meet Alabama’s estimated tax thresholds can result in penalties. The ADOR safe-harbor rule allows you to avoid penalties if your payments equal at least 90 % of the current year’s tax or 100 % (110 % for higher income) of the previous year’s total. Use the underpayment worksheet in the ADOR instructions to verify compliance.
Who Should Pay Estimated Tax?
You should pay quarterly estimates if you:
- Have income not subject to withholding (self-employment, rental, or investment income).
- Operate a business or partnership without automatic tax withholding.
- Receive large bonuses, capital gains, or taxable retirement income without withholdings.
Taxpayers can adjust their remaining vouchers at any time during the year if income changes significantly.
Last reviewed: 2025-11-12: If you believe this form requires an update, please contact us.
Additional Resources
- Form AL-40 – Alabama Individual Income Tax Return
- Form AL-40ES – Estimated Tax Voucher
- Alabama State Tax Calculator
- Mortgage Calculator – Estimate monthly payments and affordability
- Alabama Department of Revenue – Individual Income Tax
Planning early with Form 40ES lets you manage cash flow and prevent unpleasant surprises at tax time. Use this form to stay compliant, reduce penalties, and meet your Alabama income tax obligations efficiently throughout the year.
Quick Access Tools
Frequently Asked Questions
How does income allocation work for part-year residents filing AL-40NR?
For part-year residents, Form AL-40NR requires a two-step process: (1) report all income from all sources on the federal-equivalent side of the return, and (2) allocate only Alabama-sourced income into the Alabama column. Income earned while you were physically residing in Alabama is generally considered Alabama-sourced, regardless of employer location. Meanwhile, income earned while domiciled outside Alabama is Alabama-sourced only if the economic activity occurred within the state—such as performing work in Alabama, operating a business there, or earning income from Alabama property. Deductions must also be apportioned: some are fully allowed, while others (e.g., certain business expenses) must be split proportionally. Accurate allocation ensures the tax is calculated only on income legally attributable to Alabama. Completing this allocation carefully often prevents over-taxation and produces a fair representation of your Alabama tax liability.
What is Alabama Schedule ATP and when is it required?
Alabama Schedule ATP is used to calculate and report additional taxes and penalties that arise when certain tax conditions are not met. Unlike other schedules that compute income or deductions, Schedule ATP focuses on situations such as early withdrawal penalties on education savings accounts, repayment requirements for certain credits, penalties for failure to file or pay timely, and other special-case tax assessments defined under Alabama law. This schedule functions as a central place where all supplemental taxes must be disclosed to ensure the taxpayer’s Form AL-40 or AL-40NR accurately reflects total liability. Failing to include required ATP entries may lead to ADOR corrections, additional assessments, or interest charges. Because of this, Schedule ATP is an essential compliance document for taxpayers who triggered any mid-year disallowed benefits, timing-related penalties, or other exceptions.
Are HSA contributions pre-tax for Alabama?
Generally pre-tax federally and often for Alabama; confirm in the state section and add in the calculator.
What is Alabama Schedule DC used for?
Schedule DC allows Alabama taxpayers to claim a deduction for qualified dependent-care expenses that enable them to work or actively seek employment. These expenses may include daycare, after-school programs, in-home childcare, or care for a disabled spouse or dependent who cannot care for themselves. Alabama’s rules parallel many federal provisions but apply at the state-deduction level rather than as a credit. To use Schedule DC, both spouses must have earned income when filing jointly unless one spouse is disabled or a full-time student. The deduction is limited by earned income, the dependency status of the individual receiving care and Alabama’s maximum per-dependent limits. Proper documentation is required for all expenses.
How does Alabama treat passive activity losses and out-of-state pass-through income?
Alabama generally follows federal passive-activity rules but requires taxpayers to separately identify passive losses on Schedule E so they can be applied only where permitted. If you have losses disallowed at the federal level, they remain disallowed in Alabama unless the state provides a separate exception. For pass-through income earned in another state, Alabama requires residents to report the full amount, then claim any allowable adjustments or credits on other schedules such as Schedule CR. The Schedule E calculator prepares totals that flow into Alabama Form 40 so the correct taxable amount appears on the return.
Important Notes
All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.