Arizona sales tax exemptions cover a defined set of goods and business inputs, including manufacturing machinery, raw materials, agricultural supplies, prescription drugs, durable medical equipment, solar and wind equipment, and qualifying purchases by 501(c)(3) organizations. What Arizona actually charges is not a sales tax in the traditional sense. It is a Transaction Privilege Tax (TPT) on the seller’s gross receipts, though the cost almost always gets passed to the buyer.1Arizona Department of Revenue. Transaction Privilege Tax That distinction matters because exemptions live in the statutes governing the seller’s classification, chiefly ARS 42-5061 for retail sales and ARS 42-5159 for use tax, and both the buyer and the seller share responsibility for documenting the exemption correctly.
Manufacturing and Production Purchases
Two categories of manufacturing purchases are exempt. First, tangible personal property that becomes an ingredient or component of a manufactured product sold in the regular course of business.2Arizona Legislature. Arizona Code 42-5159 – Exemptions Raw materials, chemicals, and parts that end up physically incorporated into the finished product all qualify. Steel purchased to fabricate structural beams for resale is a textbook example.
Second, machinery and equipment used directly in production:3Arizona Commerce Authority. Sales Tax Exemptions for Manufacturing
- Machinery used directly in manufacturing, processing, or fabricating under ARS 42-5159(B)(1).
- Machinery, equipment, or transmission lines used directly in producing or transmitting electrical power under ARS 42-5159(B)(4). Distribution equipment does not qualify.
- Machinery or equipment used in research and development under ARS 42-5159(B)(15).
- Electricity or natural gas purchased by businesses principally engaged in manufacturing or smelting.
The word “directly” is the pinch point. Equipment that touches the product or is essential to transforming it usually clears the bar. Office furniture in the plant’s administrative wing does not, even though it sits inside the factory.
Agricultural Purchases
Farmers and ranchers get exemptions on the core inputs of commercial production. Livestock and poultry sold to people in the business of farming, ranching, or producing livestock or poultry are exempt, along with feed, salts, vitamins, and other additives used in those operations. Arizona’s definition of poultry is broad enough to cover ratites like ostriches and emus.2Arizona Legislature. Arizona Code 42-5159 – Exemptions Feed purchased for noncommercial livestock boarding also qualifies.
Propagative materials used in commercial crop production are separately exempt: seeds, fertilizers, pesticides, seedlings, roots, bulbs, and cuttings used to produce agricultural, horticultural, or floricultural crops in Arizona.4Arizona Legislature. Arizona Code 42-5159 – Exemptions The exemption is limited to commercial production. A backyard garden does not count.
At the retail level, ARS 42-5061 mirrors these categories so sellers can deduct the gross receipts from qualifying agricultural sales when they calculate their TPT.5Arizona Department of Revenue. Arizona Transaction Privilege Tax Ruling TPR 18-1
Prescription Drugs and Medical Equipment
Prescription drugs, including medical oxygen, are exempt when prescribed by a licensed health care professional. So are prosthetic appliances and durable medical equipment that meets Medicare’s classification criteria. Under Medicare’s definition, qualifying equipment must be durable enough for repeated use, medically necessary, typically useful only to someone who is sick or injured, intended for home use, and expected to last at least three years.6Medicare.gov. Durable Medical Equipment (DME) Coverage
In practice, that covers wheelchairs, hospital beds, oxygen equipment, and similar items prescribed for home use. Over-the-counter items generally do not qualify, even when they serve a medical purpose. The line usually comes down to whether a licensed provider prescribed the item.
Nonprofit and Charitable Organizations
Organizations that qualify under Section 501(c)(3) can access TPT exemptions on purchases supporting their charitable missions. These generally reach hospitals, health care organizations, and entities providing educational, therapeutic, or rehabilitative services. Purchases for programs serving individuals with disabilities and supplies used by organizations that provide meals to people in need also qualify.
The exemption is only as secure as the federal status behind it. The IRS automatically revokes 501(c)(3) status when an organization fails to file its required annual return for three consecutive years, and losing federal status pulls the Arizona exemption down with it.7Internal Revenue Service. Annual Form 990 Filing Requirements for Tax-Exempt Organizations The form your organization owes depends on its size:
- Form 990 when gross receipts reach $200,000 or more, or total assets reach $500,000 or more.
- Form 990-EZ when gross receipts are under $200,000 and total assets are under $500,000.
- Form 990-N (e-Postcard) when gross receipts are normally $50,000 or less.
The return is due by the 15th day of the fifth month after the tax year ends. Form 8868 provides an automatic six-month extension.7Internal Revenue Service. Annual Form 990 Filing Requirements for Tax-Exempt Organizations An organization whose status is revoked must file corporate income tax returns and may owe income taxes on top of losing state exemptions.
Solar, Wind, and Renewable Energy Credits
Arizona exempts solar and wind equipment from TPT, and it also exempts renewable energy credits (RECs), the instruments that renewable generators sell to utilities to satisfy Arizona’s renewable energy standard. Senate Bill 1229, enacted in 2012, confirmed that REC transactions are not subject to TPT.8Database of State Incentives for Renewables and Efficiency. Solar and Wind Equipment Sales Tax Exemption
ARS 42-5159 also carries an exemption for equipment used in specific environmental response or remediation activities tied to ARS 42-5075.2Arizona Legislature. Arizona Code 42-5159 – Exemptions This is narrower than a general pollution-control exemption, so businesses cleaning up contamination should check whether their specific equipment purchases fit.
Out-of-State Purchases and the Use Tax Credit
ARS 42-5159 prevents Arizona from double-taxing goods you already paid tax on somewhere else. If you purchased tangible personal property and paid a sales or excise tax to another state at a rate equal to or higher than Arizona’s, no Arizona use tax is owed. If the other state’s rate was lower, you owe only the difference.2Arizona Legislature. Arizona Code 42-5159 – Exemptions Businesses buying equipment, inventory, or supplies from out-of-state vendors rely on this constantly.
The same statute exempts property that is constitutionally protected from state taxation, including goods moving in interstate commerce or items that federal law requires to be tax-free.2Arizona Legislature. Arizona Code 42-5159 – Exemptions
How to Actually Claim an Exemption
A statutory exemption does nothing for you without paperwork. Arizona requires sellers to collect and retain an exemption certificate from any buyer claiming a purchase is exempt. The Streamlined Sales Tax Exemption Certificate is accepted in Arizona along with 23 other member states, and purchasers must supply a valid state-issued tax ID number when claiming the exemption.9Streamlined Sales Tax Governing Board. Exemptions Sellers generally don’t have to verify the ID, but the certificate has to be on file.
Keep those certificates and your underlying purchase records. Arizona’s TPT audit window runs four years from the later of the return’s due date or filing date. If the Department of Revenue finds that reported receipts were understated by more than 25%, the window stretches to six years. If a return was never filed at all, there is no time limit. Six years of retention is a reasonable floor for exemption certificates, purchase invoices, and filed returns.
One more compliance note worth folding into your process: Arizona cities and towns layer their own TPT rates on top of the state rate. State-level exemptions don’t automatically match city-level treatment for every classification, so if you operate across multiple jurisdictions, confirm the local rules for each category of exempt purchase you rely on.