Research and claim review
Research begins with primary law, regulator, government, issuer, provider, or original dataset material when it is available. Secondary sources may explain context or surface a question, but they do not replace the governing document for a high-risk claim. Each guide records its source set and access date, and claims that can change are assigned a review cadence or event-driven review trigger.
Decision method
Nortune starts with the reader’s objective, constraints, time horizon, downside, reversibility, and opportunity cost. Products and tactics come after the decision is defined. Scenario comparisons use ranges when precision is not supported and identify which assumptions change the result most.
Calculators and models
Calculator pages state the formula, default values, units, assumptions, limitations, and interpretation of the result. Worked examples are reproduced independently from the cited rule or registered formula where practical. A calculator result is an estimate produced by its inputs and model. It is not a guarantee, quote, tax determination, credit decision, or individualized recommendation.
Product evaluation
Product coverage considers the job the product performs, target user, price, recurring cost, switching cost, important limitations, data handling, support, and relevant alternatives. Provider claims are checked against current official terms where possible. Where first-hand testing is performed, the tested version, platform, date, and limits of the test should be stated; where it is not performed, the page must not imply personal use or observation.
Jurisdictions
Rules are labeled by jurisdiction when location changes the answer. U.S. content should distinguish federal rules from state or local variation where material. Global and cross-border material should identify the relevant country, residence, citizenship, work authorization, tax, or financial-system assumptions rather than treating “international” as one rule set.