Editorial policy

How we research, write, fact-check and update every guide.

• Sources first. Facts, figures and rules come from primary sources (government agencies, codes, manufacturer documentation) and are linked in every article.
• How we use AI. We use AI tools to help research and draft. Every article is fact-checked against its sources and reviewed before publishing. We do not publish unreviewed automated content.
• No invented numbers. Estimates are labeled as estimates, and calculations are shown so you can check them.
• Images. Photos are properly licensed (for example Creative Commons via Wikimedia Commons) and credited; diagrams are our own. See image credits.
• Updates. We review articles when rules change (for example, tax credits) and show the last-updated and fact-checked dates.
• Corrections. Found an error? Tell us via the contact page, and we will correct it and note the date.
• Independence. If we add ads or affiliate links in the future, they will be clearly disclosed and will not change our recommendations.