Editorial Policy
The Calculator Project publishes calculator tools and educational explanations. This policy explains how we choose sources, handle corrections, and keep ads separate from calculator logic.
Source Standards
We prefer primary sources: government tax agencies, statutes, regulators, official data tables, and original market-data publishers. When a primary source is incomplete or not public, we use professional secondary sources only with a visible limitation note.
Calculator Independence
Calculator formulas and assumptions are not changed for advertisers. Ads, analytics, and affiliate relationships, if any are added later, do not determine calculator outputs, rankings, or recommendations.
Corrections
If a source changes, a state updates a tax rule, or a user finds a calculation issue, we review the report and update the relevant page, source note, test, or documentation. Material assumptions should have a visible source trail or a clear explanation of why a calculator default is being used.
Limitations
We write for educational and preliminary screening purposes. We do not provide individualized legal, tax, financial, investment, lending, title, appraisal, or insurance advice. Users should verify local assumptions with the appropriate professional before making a decision.
Contact For Corrections
Send corrections, source updates, or data questions through the contact page.