How we verify, date and score our information

We favour primary sources: official texts (tax codes, immigration laws), tax administrations and government services, bilateral tax treaties, and publications by leading bodies in the sector. The proprietary indices (passport mobility, tax attractiveness) are based on aggregated public data, which we present as orders of magnitude, not as official figures.

The figures on the site are facts linked to their source. Only those that a reviewer has actually checked carry a verification date, which applies to them alone. When a rule is uncertain, undergoing reform, or depends heavily on personal circumstances, we flag it explicitly rather than wrongly settling the matter. We are particularly wary of outdated content: when a regime is abolished (such as Portugal's former NHR), we indicate this as soon as we become aware of it, but a page may lag behind the rule for a time.

The simulator weights more than 50 criteria per country (taxation, cost of living, safety, healthcare, schools, climate, connectivity…) and cross-references them with your profile to produce a compatibility score. Our indices (passports, tax attractiveness) assign a summary score based on criteria set out on each “Methodology” page. These scores are comparison tools, not absolute truths: they serve to narrow things down, never to make the decision on their own.

• We do not give individual advice: our content is general and educational.
• We do not guarantee the completeness or the exact accuracy of data that changes (thresholds, rates, lists of destinations).
• We do not allow a commercial partner to influence an analysis or a ranking.

An error, outdated data, a figure to correct? Report it to info@everlatitude.com: we review every report; when a correction is made, only the items actually re-verified receive a new verification date. Our content is reviewed periodically, with priority given to major tax and immigration reforms. These updates are not made in real time: a reform may occur between two checks.

Reminder: before any decision to move abroad, change tax residency or invest, have your situation validated by a qualified professional (lawyer, tax adviser). Our tools prepare the decision; they do not replace it. Some news briefs are written with the help of artificial intelligence, based on a cited source, and the page of each brief states whether a person has reviewed it. The English, Spanish and German versions of the site are machine-translated from the French. The limits of the content and tools are set out in detail in the terms of use and disclaimers.