Alabama's property tax appeal system has several features that distinguish it from other states TaxAppeal serves. The 10% residential assessment ratio is among the lowest in the nation. The annual appeal window is a firm 30 days from your Notice of Valuation. A signed agent authorization form is required for any third-party filer. And the Board of Equalization can raise your value — the same two-way review risk as Georgia. This guide covers the complete Alabama BOE appeal process from assessment notice to resolution.
How Alabama Property Taxes Work
Alabama uses a tiered assessment system. Class I (utility) property is assessed at 30% of fair market value. Class II (commercial/industrial) at 20%. Class III (residential owner-occupied) at 10% of fair market value. Your tax bill is calculated by multiplying your assessed value by the local millage rate. The 10% ratio means a $300,000 home has an assessed value of $30,000 — your millage rate applies to $30,000, not $300,000.
- ✓Class III residential: 10% of fair market value
- ✓Example: $300,000 home × 10% = $30,000 assessed value
- ✓At 50 mills (5%): $30,000 × 0.05 = $1,500 annual tax
- ✓Effective rate: Approximately 0.5–0.8% of market value
- ✓HB73 cap: Annual assessed value increases for owner-occupied Class III properties capped at 7% (effective October 2024)
Step 1: Receive and Review Your Notice of Valuation
Most Alabama counties mail individual Notices of Valuation between April and August. Madison County is the exception — it publishes new values in the local newspaper instead of mailing notices. When your notice arrives, the 30-day clock starts from the mailing date printed on the notice. Check your notice immediately and compare the county's fair market value estimate to recent comparable sales in your area.
- ✓Notice arrives: April–August depending on county
- ✓Madison County exception: Watch local newspaper for publication of new values
- ✓30-day deadline runs from: Mailing date on the notice
- ✓Treat as receipt deadline: File 7–10 days before the printed deadline
- ✓Set calendar alert immediately: Do not wait until day 25
Step 2: Evaluate Whether to Appeal (Two-Way Review Check)
Alabama's Board of Equalization can increase, decrease, or maintain your assessed value during the appeal process. Before filing, check comparable sales. If recent sales of similar homes in your area are consistently BELOW the county's fair market value estimate, you have grounds to appeal. If sales are at or above your assessed value, do NOT file — the BOE may increase your assessment.
- ✓Safe to appeal: Recent comparable sales below your county's fair market value estimate
- ✓Do not appeal: Comparable sales at or above your fair market value assessment
- ✓Key sources: County assessor website, Zillow, Redfin — search your neighborhood for recent sales
- ✓TaxAppeal USA evaluates evidence before filing and only proceeds when the case supports a reduction
Step 3: Prepare Agent Authorization (Required)
Alabama counties require a signed agent authorization form for any third-party filer. There is no statewide standard form. TaxAppeal USA generates a professional authorization letter at checkout — recorded with your name, property address, and timestamp — filed as page 2 of your certified mail letter. Mobile County exception: Mobile County has its own specific form; TaxAppeal coordinates with Mobile County customers after checkout.
Step 4: File Before the 30-Day Deadline
File your written protest with your county Board of Equalization before the 30-day deadline. Alabama uses a postmark deadline — mailing by the deadline date is sufficient. TaxAppeal USA files 7–10 days early via USPS certified mail with tracking confirmation. Your protest should state the county's fair market value estimate, your proposed fair market value, and be accompanied by comparable sales evidence and your agent authorization.
Step 5: The BOE Hearing
The Alabama Board of Equalization is a county-level panel that reviews your evidence and the assessor's data. Hearings are informal — you or your agent presents comparable sales evidence and the BOE votes. If unsatisfied with the BOE's decision, you may appeal to Circuit Court — but must pay your assessed taxes by December 31 or post bond in double the taxes owed. TaxAppeal's service covers the BOE level only.
Frequently Asked Questions
What is the Alabama property tax appeal deadline for 2026? ▾
30 days from the mailing date on your Notice of Valuation. Most counties mail notices April–August. Madison County publishes in the newspaper instead of mailing. Treat as a receipt deadline — file at least 7–10 days early.
Can my Alabama assessment go up if I appeal? ▾
Yes. Alabama's Board of Equalization can increase, decrease, or maintain your value. Only appeal when comparable sales clearly support a lower fair market value.
Is agent authorization required for Alabama property tax appeals? ▾
Yes. Alabama counties require a signed agent authorization for any third-party filer. TaxAppeal USA includes this at checkout — recorded electronically and filed with your protest letter. Mobile County has its own specific form.
How does Alabama's 10% assessment ratio work? ▾
Your tax bill is based on 10% of your property's fair market value. A $300,000 home has an assessed value of $30,000. Your local millage rate is applied to the $30,000.
What is the HB73 assessment cap? ▾
Act 2024-344 limits annual assessed value increases for owner-occupied Class III (residential) properties to 7% per year. Effective October 2024. Resets to full market value on ownership change.
Does TaxAppeal serve all Alabama counties? ▾
Yes. TaxAppeal USA files appeals in all 67 Alabama counties for $89 flat per property.