Higher-income-tax states: how to sanity-check a federal-only estimate

This calculator outputs a federal-only estimate. State income-tax rules can interact with federal changes, and some states update definitions or withholding guidance at different times.

What to check first

• State conformity: confirm whether your state adopts the relevant federal definitions or deductions for the current year.
• Withholding setup: compare your pay stub and W‑4 settings with your actual overtime pattern and household income.
• Official state guidance: use your state’s department of revenue / tax agency site linked on each state page.

Federal tools you can use

• IRS — Tax Withholding Estimator
• IRS — Form W‑4
• U.S. Department of Labor — Overtime (FLSA)

For state-specific links, go back to your state calculator page and use the “Official sources” section.