Overview
This Privacy Policy explains what personal data is processed when you use howmuchtaxdoipay.com, why it is processed, and your rights under UK data protection law.
Last updated: 4 April 2026
Data Controller
The data controller for this website is Zen Web Studios Ltd, which operates howmuchtaxdoipay.com.
Privacy contact: contact@howmuchtaxdoipay.com
Company registration: You can verify our company details on the UK Companies House register by searching for Zen Web Studios Ltd.
What Data We Process
The calculator runs client-side in your browser. Inputs such as salary, tax year, region, and optional preference fields are processed locally to generate outputs.
We do not require user accounts and we do not request direct identifiers such as your full name, postal address, National Insurance number, or payment details to use the calculator.
Local Storage
To improve usability, this site stores certain preferences and calculator inputs in browser local storage (for example selected tax year, selected region, and entered calculator fields). This data remains on your device unless you remove it.
You can clear this data at any time in your browser settings by removing site storage for this domain.
Analytics (Google Analytics)
We use Google Analytics (GA4) to understand how visitors use the site and to improve performance and content. Our measurement ID is G-NCWTEPFGJZ.
Analytics data may include pages viewed, approximate location, device/browser information, referrer, and interaction events. Google may process this data on servers that can be outside the UK.
Google provides controls and information at How Google uses information from sites or apps that use its services and the Google Analytics Opt-out Browser Add-on.
Server Logs and Technical Data
Our hosting and infrastructure providers may process technical log data such as IP address, user agent, requested URL, referrer, and timestamp for security, abuse prevention, diagnostics, and service delivery.
Purposes and Lawful Bases (UK GDPR)
Service operation and security: processed under legitimate interests (Article 6(1)(f)) to keep the service available, secure, and reliable.
Saving calculator preferences locally: processed under legitimate interests and/or your consent via browser controls where applicable.
Compliance with legal obligations: where required, processed under Article 6(1)(c).
Affiliate Links
Some pages may include referral or affiliate links. If you click a partner link, the third-party website may collect personal data and set cookies under its own privacy/cookie policies. We do not control third-party processing activities.
Recipients and Processors
Personal data may be processed by service providers acting as processors on our behalf (Zen Web Studios Ltd), such as hosting, CDN, and infrastructure providers used to operate this website.
Processor categories currently used: Krystal (UK hosting)
International Transfers
Our website is hosted in the UK (Krystal). We do not intentionally transfer personal data outside the UK for our own processing. If we use a subprocessor that processes data outside the UK in future, we will rely on appropriate safeguards under UK data protection law (for example adequacy regulations and/or approved transfer mechanisms) and update this policy.
Data Retention
Browser local storage remains until you clear it.
Server and security logs are retained only for as long as reasonably necessary for security, diagnostics, and legal/compliance purposes.
Typical retention window: 30 days
Your Rights
If UK GDPR applies to your data, you may have rights to request access, rectification, erasure, restriction, portability, and objection, and rights related to automated decision-making where applicable.
You can exercise your rights by contacting us at contact@howmuchtaxdoipay.com.
Complaints
If you are unhappy with how your personal data is handled, you can contact us first. You also have the right to complain to the UK Information Commissioner's Office (ICO): ico.org.uk.
Children
This website is not intentionally directed at children under 13.
Changes to This Policy
We may update this policy from time to time. Material changes will be reflected by updating the date at the top of this page.
Contact
For privacy enquiries or rights requests, contact: contact@howmuchtaxdoipay.com