State conformity & withholding: a neutral checklist

Use this checklist if your state has an income-tax system but you’re unsure how it interacts with a proposed federal deduction change.

Neutral checklist

• Federal baseline: treat the calculator output as a federal estimate only.
• State rules: confirm your state’s current-year filing and withholding guidance on the official tax agency site linked on your state page.
• Withholding updates: if overtime changes materially, re-check using the IRS withholding estimator and review IRS Form W‑4.
• Overtime definition: confirm what counts as overtime under wage-and-hour rules (see DOL overtime).

Your state’s official sources are linked directly on each state calculator page to keep this guide general and up-to-date.