Arizona Sales Tax logo

Arizona Sales Tax

Organization
openaccountants
arizona-sales-tax

Use this skill whenever asked about Arizona sales tax, Arizona Transaction Privilege Tax (TPT), Arizona use tax, Arizona tax nexus, or any request involving Arizona state-level consumption taxes. Trigger on phrases like "Arizona sales tax", "AZ sales tax", "TPT", "Transaction Privilege Tax", "Arizona DOR", or any request involving Arizona TPT compliance. CRITICAL -- Arizona has a Transaction Privilege Tax on the SELLER, not a traditional sales tax. ALWAYS load us-sales-tax first.

Overview

Publisheropenaccountants
Repositoryopenaccountants
Skill namearizona-sales-tax
Stars
464
Forks
65
Bundled files
Instructions only
LicenseAGPL-3.0
Links
  • Markdown instructions

    A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.

  • Works with any LLM

    AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.

  • Self-contained

    Everything the model needs lives in the instructions — no extra files to sync.

  • Open source

    Published by openaccountants on GitHub. Read the source before you install it.

Installation

Install the Arizona Sales Tax AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

1

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
    https://github.com/openaccountants/openaccountants/tree/main/agent-skills/arizona-sales-tax
  4. Enable the skill in any chat where you want it available.
Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.
2

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills
git clone --depth 1 https://github.com/openaccountants/openaccountants.git /tmp/openaccountants
mkdir -p .claude/skills
cp -r /tmp/openaccountants/agent-skills/arizona-sales-tax .claude/skills/arizona-sales-tax
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Arizona Sales Tax in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Arizona Sales Tax on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Arizona Sales Tax is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

  • Loaded only when it is needed

    The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.

  • Switch models mid-chat

    Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Arizona Sales Tax

Section 1 -- Quick reference

Quick reference

FieldValue
JurisdictionArizona, United States
Jurisdiction codeUS-AZ
Tax typeTransaction Privilege Tax (TPT) -- NOT a traditional sales tax; tax is on the SELLER
State TPT rate5.6% (retail classification)
Local add-on range0% -- 5.6% (city + county)
Maximum combined rate~11.2%
SourcingOrigin-based for most TPT classifications
Economic nexus$100,000 in gross proceeds or gross income (revenue only)
Primary legislationA.R.S. Title 42, Chapter 5
Tax authorityArizona Department of Revenue (ADOR)
Filing portalhttps://www.aztaxes.gov
SST memberNo
Federal framework skillus-sales-tax
Skill version2.0

CRITICAL: Arizona TPT is a tax on the privilege of doing business in Arizona, imposed on the SELLER. It is NOT a sales tax on the buyer, though sellers typically pass it through.

Required inputs

Required inputs

#QuestionWhy it matters
1Arizona TPT license number?Required for filing
2Filing frequency?Monthly, quarterly, annual
3Nexus type?$100K threshold
4Business classification?Different TPT rates by classification
5Contractor?Prime contracting has special 65/35 split rules
6Sell into multiple cities?City TPT rates vary significantly

Refusal catalogue

  • R-AZ-1 — Prime contracting classification. 65/35 split between real property and materials is complex. Escalate. (R-AZ-1 -- Prime contracting classification)

3.1 Retail classification (5.6% state)

Retail classification patterns

PatternTaxable?Notes
General TPPTAXABLERetail classification
ClothingTAXABLENo exemption
Grocery food (unprepared)EXEMPTA.R.S. §42-5061(A)(1)
Prepared foodTAXABLE

3.2 SaaS and digital goods

SaaS and digital goods patterns

PatternTaxable?Notes
Canned software (physical or download)TAXABLETPP
SaaS (cloud-hosted)TAXABLEArizona treats SaaS as taxable
Digital goodsTAXABLE

3.3 Services

Services patterns

PatternTaxable?Notes
Professional servicesNOT TAXABLE
Job printingTAXABLESeparate classification
Restaurants/barsTAXABLERestaurant classification
Transient lodgingTAXABLETransient lodging classification
Personal property rentalTAXABLERental classification
Prime contractingTAXABLE65/35 rule applies

3.4 Exemptions

Exemptions

PatternStatus
Grocery foodEXEMPT
Prescription drugsEXEMPT
Manufacturing machinery (directly in manufacturing)EXEMPT
ResaleEXEMPT
Interstate commerceEXEMPT

4.1 TPT classifications and state rates

TPT classifications and state rates

ClassificationState rate
Retail5.6%
Mining3.125%
Utilities5.6%
Telecommunications5.6%
Transient lodging5.5%
Restaurants/bars5.6%
Contracting (prime)5.6%
Rental of TPP5.6%

5.1 TPT is on the seller

  • TPT liability — TPT is a privilege tax on the seller for conducting business. The buyer is NOT legally liable. Most sellers pass the amount through to buyers.

5.2 Model City Tax Code

  • Model City Tax Code — Arizona cities adopt the Model City Tax Code with local modifications. City rates and exemptions can vary significantly.

Section 6 -- Return form and filing

Filed via AZTaxes.gov. Single return covers state + county + city TPT.

7.1 Economic nexus

Economic nexus

ParameterValue
Threshold$100,000 in gross proceeds or gross income
Transaction countNone
Effective dateOctober 1, 2019

EC1 -- Prime contracting

Situation: Contractor builds a house. Resolution: Prime contracting classification. 65% of contract price treated as real property improvement (not taxable); 35% treated as materials (taxable at TPT rate). Complex -- escalate.

Test 1 -- Retail sale in Phoenix

Input: $500 item. Combined rate: ~8.6%. Expected: Tax = ~$43.

Test 2 -- Grocery food exempt

Input: $200 groceries. Expected: Tax = $0. Grocery food exempt in AZ.

Section 10 -- Prohibitions

  • NEVER call Arizona's tax a "sales tax" without noting it is a Transaction Privilege Tax on the SELLER.
  • NEVER forget that city TPT rates and exemptions can differ from the state.
  • NEVER apply destination-based sourcing for most TPT classifications -- Arizona is generally origin-based.
  • NEVER treat grocery food as taxable -- it is exempt in Arizona.
  • NEVER compute any number -- all arithmetic is handled by the deterministic engine, not Claude.

Disclaimer

This skill is provided for informational and computational purposes only and does not constitute tax, legal, or financial advice. All outputs must be reviewed by a qualified professional before filing.

Disclaimer

This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. Open Accountants and its contributors accept no liability for any errors, omissions, or outcomes arising from the use of this skill. All outputs must be reviewed and signed off by a qualified professional (such as a CPA, EA, tax attorney, or equivalent licensed practitioner in your jurisdiction) before filing or acting upon.

The most up-to-date, verified version of this skill is maintained at openaccountants.com. Log in to access the latest version, request a professional review from a licensed accountant, and track updates as tax law changes.


Talk to a verified accountant

This guide is maintained by the OpenAccountants network — accountants who put their name behind the tax answers AI gives people. The live, always-current version (and the professional behind it) is at openaccountants.com.

General reference only. This document does not constitute tax, legal, or financial advice. Verify figures against the cited primary sources or with a licensed professional before relying on them.

Today's figures and who stands behind this skill

This file is an AI skill (tax rules your AI follows) from OpenAccountants, copied on 2026-07-13. Rates, thresholds and deadlines change. For the current version of this skill, its official sources and the named accountant (if any) who stands behind it, call get_skill with slug arizona-sales-tax on the OpenAccountants connector (https://www.openaccountants.com/connect), or read https://www.openaccountants.com/skills/arizona-sales-tax. If neither is available, confirm every figure against the official source pages cited above before relying on it.

Frequently asked questions

What does the Arizona Sales Tax AI skill do?

Use this skill whenever asked about Arizona sales tax, Arizona Transaction Privilege Tax (TPT), Arizona use tax, Arizona tax nexus, or any request involving Arizona state-level consumption taxes. Trigger on phrases like "Arizona sales tax", "AZ sales tax", "TPT", "Transaction Privilege Tax", "Arizona DOR", or any request involving Arizona TPT compliance. CRITICAL -- Arizona has a Transaction Privilege Tax on the SELLER, not a traditional sales tax. ALWAYS load us-sales-tax first.

Why use Arizona Sales Tax on TypingMind?

Because you install it once and use it with any model. Arizona Sales Tax is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Arizona Sales Tax in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/openaccountants/openaccountants/tree/main/agent-skills/arizona-sales-tax. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Arizona Sales Tax?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Arizona Sales Tax?

As many as you like. As long as a model supports skills, you can use Arizona Sales Tax with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Arizona Sales Tax AI skill free?

Yes. It is published on GitHub by openaccountants under the AGPL-3.0 license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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