Alabama Reverse Sales Tax Calculator
Alabama's 4% state rate sits near the bottom of the national range, but local taxes push the statewide average up to 9.24% — well above the US median. In Birmingham, Mobile, and Montgomery, the combined rate hits 10%, which is among the highest for major US cities. If you're reconciling receipts from an Alabama trip, budget for a combined rate in the 9–10% range depending on the city.
The calculator defaults to Alabama's statewide average of 9.24%. For Birmingham, Mobile, and Montgomery, set it to 10%. Smaller cities and rural counties may run closer to 8–9%. If you have the receipt, the easiest approach is to read the tax line directly and let the calculator back-calculate the rate from the amounts shown.
Current Alabama Sales Tax Rates
| Component | Rate |
|---|---|
| State rate | 4.00% |
| Average local rate | 5.24% |
| Average combined rate | 9.24% |
| Location | Combined Rate |
|---|---|
| Birmingham | 10.00% |
| Huntsville | 9.00% |
| Mobile | 10.00% |
| Montgomery | 10.00% |
What's Taxable in Alabama
Alabama taxes groceries at the full combined rate — one of the few states that does not exempt food from sales tax. Prescription drugs are exempt.
Worked Example
Purchase in Birmingham totaling $54.98 at 10.00%.
$54.98 ÷ 1.1000 = $49.98 (pre-tax price)
$54.98 − $49.98 = $5.00 (tax amount)
That's $5.00 in sales tax on a $49.98 purchase before tax. The main calculator handles this automatically — enter the total and rate and the breakdown appears instantly.
Frequently Asked Questions
Birmingham's combined rate is 10% — the 4% Alabama state rate plus Jefferson County and city levies that together add 6 percentage points. It's one of the highest combined rates among major US cities.
Yes. Alabama is one of the few states that taxes unprepared groceries at the full combined rate. There is no state-level grocery exemption. Prescription drugs are exempt.
Divide the total amount paid by (1 + the tax rate as a decimal). For Alabama's 9.24% rate: divide by 1.0924. The result is the pre-tax price. Subtract that from the total to get the tax amount. The calculator on this page does this automatically.
Alabama holds annual sales tax holidays for back-to-school shopping (clothing and school supplies) and for severe weather preparedness items (generators, batteries). Dates vary; check the Alabama Department of Revenue for exact 2025 windows.