Editorial Policy
Quick summary
- This page explains how we handle the topic below in plain language.
- If something is unclear or looks wrong, you can reach us via Contact.
- We correct material errors and note meaningful updates (see Corrections).
Plain English: we build planning models so you can make better decisions faster. They are educational tools, not personalised financial, legal, tax, or investment advice.
What we publish (and what we avoid)
- Decision guides: frameworks for high‑commitment choices (car ownership, property, financing).
- Calculators: transparent models that convert complex rules into a small set of inputs and outputs.
- We avoid duplicates: if a new page overlaps an existing one, we upgrade the existing page instead.
How we build models
- First principles: model the cashflows and constraints (duties, fees, financing caps, CPF mechanics).
- Assumption transparency: every calculator should state what it assumes, what it ignores, and when it breaks.
- Conservative sanity checks: we encourage readers to run a downside scenario before committing.
- Interpretation help: calculators are paired with explanatory notes, examples, common mistakes, and FAQs.
Sources
Where official sources exist, we prefer them. Examples include IRAS (stamp duties), CPF Board (CPF usage and accrued interest mechanics), and HDB guidance for policy constraints. We may also reference bank documents for rate structure conventions and market practice (e.g., effective vs flat rates).
Updates and maintenance
- We update pages when policy rules change, when calculators need clarification, or when readers report issues.
- Many pages include a “Last updated” line to make review cycles visible.
- We prioritise fixes that change decision outcomes (e.g., wrong rates, missing fees) over cosmetic changes.
Corrections policy
If you spot an error, email us at contact@ownershipguide.com with:
- the page URL,
- what you entered (inputs) and what you expected, and
- the official source link (if relevant).
We verify against primary sources where possible and ship a versioned update. If the change is material, we note it on the relevant page.
Advertising and independence
Ownership Guide may display ads (including Google AdSense) to support operating costs. Ads do not influence calculator assumptions or editorial conclusions. See: Advertising Disclosure.
Contact
For corrections, feedback, or requests for new tools, use the Contact page or email contact@ownershipguide.com.
What makes a page “high quality” here
Our standard is simple: a reader should be able to understand the assumptions, reproduce the logic, and know where uncertainty sits. When we can’t cite an official source, we state that clearly.
- Models over opinions: we prefer simplified models that expose trade-offs (cashflow, downside, friction costs).
- Explicit assumptions: if an assumption changes the answer materially, it should be stated.
- Maintenance:
If you disagree with a model assumption, send us your alternative and we may incorporate it (with attribution where appropriate).
For corrections or feedback, see our Corrections Policy and contact page.
Last updated: 14 Apr 2026