Arizona Research & Development Tax Credit

Who qualifies

• Must conduct qualified research activities physically located within Arizona — research follows federal §41 four-part test but must be Arizona-located
• Qualified research expenses (QRE) include: wages for AZ-based employees performing, supervising, or supporting research; AZ-located supply costs; 65% of AZ contract research payments
• Basic research payments to Arizona Board of Regents universities qualify for an additional 10% credit — must be certified by the Arizona Commerce Authority post-2014
• Small business refundability: businesses employing fewer than 150 persons during the taxable year may elect a 75% cash refund of the credit amount that exceeds Arizona tax liability; remaining 25% is forfeited (not carried forward)
• Companies NOT electing the small-business refund may carry forward unused credits: 10 years for credits arising in taxable years beginning on or after January 1, 2022; 15 years for older credits
• All entity types qualify: C-corporations, S-corporations, LLCs, partnerships, sole proprietors — must file an Arizona return
• No minimum revenue, minimum employees, or minimum project size (the 150-employee threshold applies only for the refundability election)

What it covers

How to apply

1. 1

   Identify and document Arizona-located qualified research expenses

   Start from your federal §41 QRE calculation but carve out only expenses for research conducted physically in Arizona. Wages for employees performing research remotely from other states, out-of-state contractor costs, and supplies consumed outside Arizona do not qualify. Build a location-by-project allocation table — this is the primary audit focus.

   ~8 hrs

2. 2

   Calculate your base amount and incremental QRE

   Arizona uses the same base-period methodology as federal §41. The credit applies only to QRE above the base amount. For companies with an established history, the base is the fixed-base percentage × current-year AZ gross receipts (capped at 50% of QRE). For startups without base-period history, Arizona follows the federal startup rules. The incremental amount is what the credit rates apply to.

   ~4 hrs

3. 3

   Apply the tiered credit rates

   Apply 24% to incremental QRE up to $2.5M (for taxable years beginning before December 31, 2030). Apply 15% to incremental QRE above $2.5M. If you made basic research payments to an Arizona Board of Regents university, apply an additional 10% credit to those amounts (subject to the $10M statewide annual cap). Total your credit.

   ~2 hrs

4. 4

   Determine refund vs. carryforward election (small businesses)

   If your company had fewer than 150 employees during the taxable year, decide whether to elect the cash refund. The refund equals 75% of the credit amount exceeding your Arizona income tax liability — you permanently forfeit the remaining 25%. If you do not elect the refund, you carry forward 100% of the excess for up to 10 years (credits from 2022+). The break-even depends on your expected future AZ tax liability — if it's growing fast, carryforward may be worth more.

   ~2 hrs

5. 5

   Complete Arizona Form 341

   File Form 341 (Credit for Increased Research Activity) with your Arizona income tax return. The form walks through the base-period calculation, incremental QRE, university research credit, and the small-business refund election. Attach to Form 120 (C-corporations), Form 140 (individuals/sole props), Form 165 (partnerships), or Form 120S (S-corps). If electing the refund, check the election box on the timely-filed return.

   ~3 hrs

6. 6

   Maintain supporting documentation

   Keep records demonstrating that each qualifying activity occurred in Arizona: employee location records, project timesheets by work location, Arizona-address supply invoices, and university research contracts with AZ Board of Regents certification. Arizona DOR audits of this credit request location evidence separately from federal documentation. Retain records for at least 4 years from the return due date.

   ~5 hrs

Industry & certifications

NAICS codes: 541511, 541512, 541330, 325412, 336411, 541714, 541715

Deadline & timing

File Arizona Form 341 (Credit for Increased Research Activity) with your Arizona income tax return. C-corporations file Form 120. Small businesses electing the refund must make the election on a timely-filed return — extensions preserve the right to elect. The 2030 rate sunset is a planning cliff: companies with large carryforward balances from pre-2031 years retain those balances at the higher-rate value.

Programs that stack well

• Research & Development Tax Credit (Section 41)

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