ARS § 43-212

43-212 - Individual income tax model; fiscal impact requests; staff access 43-212. Individual income tax model; fiscal impact requests; staff access A. The department shall maintain an individual income tax model that estimates the fiscal impact of proposed individual income tax legislation. B. The individual income tax model shall: 1. At a minimum, allow for the adjustment of individual income tax law parameters against an anonymized representative sample of individual income tax returns. 2. Include procedures to protect taxpayer confidentiality under applicable state and federal law. C. The department shall accept requests from the joint legislative budget committee staff and legislative staff for estimates of the fiscal impact of proposed individual income tax legislation using the individual income tax model. The department shall fulfill any request under this subsection in a prompt and timely manner. D. On completion of the integrated tax system modernization project developed pursuant to section 42-5041, the individual income tax model required by this section shall provide department staff, joint legislative budget committee staff and the governor's office of strategic planning and budgeting staff direct access to the individual income tax model so that individual income tax law parameters may be interactively adjusted to develop immediate fiscal impact estimates without any additional programming required for each estimate.