Arizona state income tax
Last updated: 2026-04-27
TL;DR / ELI5
Primary form: 140
BasilTax engine: Not yet — federal plus manual state review
Structure: bracket
Progressive brackets; conformity updates frequently.
Arizona income tax at a glance
This guide explains how Arizona fits into your overall filing picture. Your federal Form 1040 is only half the story—states add their own definitions, subtractions, credits, and withholding rules.
Most Arizona residents will prepare 140 alongside the federal return. Progressive brackets; conformity updates frequently.
Withholding and W-2 boxes
If you work in Arizona (or your employer withholds for Arizona), compare boxes 15–17 on your Form W-2 to what you expect on the state return. Mismatches here are a common source of balance due surprises.
Credits, deductions, and quirks
State returns often start from federal adjusted gross income (AGI) and then apply state-specific subtractions, additions, credits, and alternative minimum taxes. Read your state instructions for the exact list—this page is a hub, not a substitute for official guidance.
Verification workflow
Upload your PDFs, assign them to a return, and run compute. When BasilTax supports Arizona end-to-end, you can trace state lines to the same documents you used for federal. When support is still in progress, use BasilTax to lock down federal and broker schedules first, then complete Arizona manually with confidence.
Ready to tie every line to your documents?
Upload your W-2s and 1099s—BasilTax extracts fields, computes federal and state, and explains each number with citations.
Frequently asked questions
- Does Arizona have a state income tax?
- Yes—Arizona has a state income tax system described on 140. Progressive brackets; conformity updates frequently.
- What form do I file for Arizona?
- Most residents use 140 for the state return, subject to exceptions for part-year residents and special situations. Always confirm the latest state instructions each filing season.
- Does BasilTax calculate Arizona state tax?
- BasilTax is focused on federal accuracy for Arizona today; you should still review state-specific rules and forms outside the app until engine support ships.