Privacy Policy
Last updated: 2026-04-19
This notice explains how NZTaxTools ("we", "us", "the site") handles personal information. It is written to meet the requirements of the New Zealand Privacy Act 2020 and the thirteen Information Privacy Principles (IPPs) administered by the Office of the Privacy Commissioner (OPC).
1. What we collect
- Calculator inputs — salary, tax code, KiwiSaver rate, student-loan balance, etc. These never leave your browser. They are stored in the URL (so results can be shared) and may be persisted in
localStorageon your device. We do not receive, transmit, or log them on any server. - Analytics — Google Analytics 4 collects anonymised usage data (pages viewed, referrer, device type, country/region from IP, session duration). See section 3.
- Advertising — Google AdSense may set cookies to deliver and measure ads. See section 4.
- Server logs — our host (Cloudflare Pages) logs request metadata (IP, user-agent, referer, timestamp) for up to 30 days for abuse prevention and debugging.
2. Consent and controls
We do not operate a cookie banner, and Google Consent Mode is not implemented on this site: analytics and advertising cookies are set as soon as you arrive, not after any acceptance step. If you are in the European Economic Area or the United Kingdom, Google AdSense's own consent message — a setting in the AdSense console, not something we control in code — may ask you to accept or reject personalised advertising; see section 4. Everywhere else, the control that governs what is stored on your device is your browser's cookie settings.
3. Google Analytics 4
We use Google Analytics 4 (property G-21W2V2BYYZ) to understand aggregate usage. Analytics
cookies load on your first pageview, with no prior acceptance step. IP addresses are truncated by Google before logging. GA4 data
retention is set to the minimum available (2 months event, 14 months user-level). We do not
cross-reference analytics data with any named individual. Google's processing is governed by its
Privacy Policy.
4. Google AdSense
We use Google AdSense (publisher ID ca-pub-8777600112471606) to serve ads. AdSense uses
cookies and similar technologies to serve ads based on prior visits to this and other websites.
Whether ads are personalised depends on your region and Google's own consent settings (see
section 2) — we do not implement Google Consent Mode on this site.
Opt out of personalised Google ads at adssettings.google.com, or opt out of third-party vendor cookies at youradchoices.com.
5. Cookies
A full list of cookies — name, provider, purpose, and duration — is on our Cookie Policy page.
6. Your rights under the Privacy Act 2020
Under the Privacy Act 2020 you have the right to:
- access personal information we hold about you (IPP 6);
- request correction of inaccurate information (IPP 7);
- know the purposes for which information is collected (IPP 3);
- expect secure storage and limited retention (IPPs 5 and 9);
- be notified of notifiable privacy breaches (Part 6 of the Act).
Given that calculator inputs never leave your browser, and that analytics and advertising cookies can be controlled at any time through your browser settings, much of the exercise of these rights is self-service.
7. Complaints
If you are not satisfied with how a privacy matter has been handled, you can lodge a complaint with the Office of the Privacy Commissioner (privacy.org.nz, 0800 803 909).
8. International transfers
Analytics and advertising data are processed by Google primarily in the United States. Section 11 of the Privacy Act 2020 governs cross-border disclosure; Google's policies provide comparable protections.
9. Children
NZTaxTools is not directed at children under 13. We do not knowingly collect information from children.
10. Changes to this policy
We may update this policy to reflect changes in our practices, hosting, or applicable law. The "Last updated" date at the top indicates the most recent revision.