Last verified: April 2026
The Headline Differences
| Aspect | Adult-Use (Prop 207) | Medical AMMA |
|---|---|---|
| Minimum age | 21 | 18 with physician certification |
| Possession limit | 1 oz / 5 g concentrate per 14 days | 2.5 oz per 14 days |
| Tax | 5.6% TPT + 16% excise (~21.6% combined) | 5.6% TPT only (no excise) |
| Home cultivation | 6 plants per adult, 12 per household | 12 plants per cardholder if 25+ miles from dispensary |
| DUI standard | Any detectable amount | Any detectable amount, with partial impairment defense |
| Workplace | No employer protection | Limited §36-2813 protection unless impaired on duty (does NOT apply to federal contractors) |
Cost-Benefit of an AMMA Card
The Arizona Medical Marijuana Act (AMMA) card costs roughly $150 total:
- $75 state application/renewal fee (every 2 years)
- ~$75–$100 recommending physician fee (one-time per renewal cycle)
Annual savings depend on your consumption:
| Monthly Spend | Adult-Use Tax | AMMA Tax | Annual Savings |
|---|---|---|---|
| $100 | ~$22 | ~$6 | ~$192 |
| $200 | ~$43 | ~$11 | ~$384 |
| $300 | ~$65 | ~$17 | ~$576 |
| $500 | ~$108 | ~$28 | ~$960 |
For a moderate-to-heavy consumer ($200–$300/month), the AMMA card pays for itself in 4–6 months. After that, savings continue every month for 2 years until renewal.
Qualifying Conditions
AMMA covers a wide range of conditions per A.R.S. §36-2801. Common qualifying conditions include:
- Cancer, glaucoma, HIV/AIDS, hepatitis C, ALS, Crohn’s disease, agitation of Alzheimer’s
- PTSD, severe and chronic pain, severe nausea, seizures, severe muscle spasms
- Other chronic or debilitating medical conditions as approved by the recommending physician
Many Valley dispensaries advertise affiliated telehealth physicians who handle the recommendation process for $75–$100. The certification visit typically takes 15–30 minutes by video.
For ASU and Community-College Students Under 21
Arizona’s adult-use age is 21, but AMMA qualifies at 18. An 18–20-year-old ASU or Maricopa Community College student with a qualifying condition (often anxiety-related, chronic pain, sleep disorders) can legally hold an AMMA card and purchase from dispensaries off-campus.
The card does not protect against ASU disciplinary action for on-campus possession (DFSCA enforcement remains in force). And remember, anyone under 21 caught with cannabis without an AMMA card faces a $100 petty offense (first time), escalating to a Class 1 misdemeanor on the third offense. See our Tempe & ASU page.
Workplace Protection — The Key Limitation
A.R.S. §36-2813 provides limited workplace protection for AMMA cardholders: an employer may not discriminate against a cardholder solely for their status as a cardholder, unless the employee is impaired on duty.
However, this protection has critical exceptions:
- Federal contractors (Honeywell, Boeing Mesa, Lockheed at Luke, Northrop, Raytheon, Microchip’s defense work, Intel under CHIPS Act) are explicitly carved out. AMMA does not apply.
- DOT-regulated positions (commercial driver’s license holders, pilots, train operators, transit operators) are federally tested.
- Safety-sensitive positions (heavy machinery operators, healthcare providers in positions involving direct patient contact) may have additional carve-outs.
- Federal employees and military personnel remain fully exposed regardless of state law.
Most Valley Dispensaries Are Dual-Licensed
The vast majority of Phoenix-metro dispensaries hold both adult-use and medical licenses. This means the same store can sell to both rec customers and medical patients (with separate transaction tracks). When you arrive, the budtender will ask whether you’re purchasing as an adult-use customer or a medical patient. Show your AMMA card if you’re medical — you’ll save the 16% excise tax automatically at checkout.
Mesa exception: Mesa permits only medical and dual-licensed dispensaries (Ordinance No. 5803) — rec-only operators are not permitted in Mesa. See our Mesa page.
For in-depth cannabis education, dosing guides, safety information, and research summaries, visit our partner site TryCannabis.org