Methodology

What we estimate

Inputs

Important limitations

State taxes and conformity

This calculator focuses on the projected federal overtime deduction estimate. State tax treatment can differ, including whether a state conforms to federal deductions and how residency or part‑year filing affects your return. Use the state pages as a starting point and verify with official state guidance.

If you want a quick overview, see State income tax conformity and the All states hub.

Sources and updates

We link to primary sources (IRS publications and official state agencies) and update pages when guidance changes. See how we update and our source rules.