Privacy Policy

Last updated: 7 April 2026

VAT Margin Calculator ("we", "us", or "our") operates the website vatmargincalculator.com (the "Site"). This page informs you of our policies regarding the collection, use, and disclosure of personal information when you use our Site.

Information We Collect

We do not collect any personal information directly. Our calculator runs entirely in your browser. All calculation data, saved history, and preferences are stored locally on your device using your browser's localStorage feature and are never transmitted to our servers.

We do not require you to create an account, provide an email address, or submit any personal details to use our calculator.

Cookies and Tracking Technologies

Our Site uses cookies and similar technologies for the following purposes:

Essential Storage (localStorage)

We use your browser's localStorage to remember your calculator preferences, saved calculations, theme setting (light/dark mode), and cookie consent status. This data never leaves your device and is not shared with any third party.

Third-Party Advertising Cookies

We use Google AdSense to display advertisements on our Site. Google AdSense and its partners may use cookies and web beacons to serve ads based on your prior visits to our Site or other websites. Specifically:

• Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website and other websites.
• Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to our Site and/or other sites on the Internet.
• Google may use the data collected to contextualise and personalise the ads shown to you through its advertising network.

How to Opt Out of Personalised Advertising

You may opt out of personalised advertising by visiting:

• Google Ads Settings to control what information Google uses to show you ads.
• aboutads.info to opt out of third-party vendor cookies for personalised advertising.
• Your Online Choices (EU) for European users to manage online behavioural advertising preferences.

Google AdSense

This Site uses Google AdSense, a service for including advertisements provided by Google LLC ("Google"). Google AdSense uses cookies to serve ads relevant to users. The information generated by cookies about your use of this website (including your IP address) will be transmitted to and stored by Google on servers in the United States or other countries.

Google may use this information to evaluate your use of the website, to compile reports on website activity, and to provide other services related to website activity and internet usage. Google may also transfer this information to third parties where required by law, or where such third parties process the information on Google's behalf.

For more information on how Google uses data, please visit How Google uses data when you use our partners' sites or apps.

Data Retention

Since we do not collect personal data on our servers, there is no personal data for us to retain. Data stored in your browser's localStorage persists until you clear your browser data or use the "Reset" or "Clear History" functions within our calculator. You can also clear this data manually through your browser settings at any time.

Your Rights (UK GDPR)

Under the UK General Data Protection Regulation (UK GDPR), you have the right to:

• Access your personal data
• Rectify inaccurate personal data
• Request erasure of your personal data
• Object to the processing of your personal data
• Request restriction of processing of your personal data
• Data portability

As we do not collect personal data on our servers, these rights primarily apply to the data stored locally on your device and to the data processed by Google through AdSense. To exercise your rights regarding Google's data processing, please visit Google Ads Settings.

Children's Privacy

Our Site is intended for use by businesses and individuals who are at least 18 years old. We do not knowingly collect personal information from children under 18. If you are under 18, please do not use this Site.

External Links

Our Site contains links to external websites, including HMRC guidance pages, Google services, and selling platform websites. We are not responsible for the privacy practices or content of those external sites. We encourage you to review the privacy policies of any third-party sites you visit.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated "Last updated" date. We encourage you to review this page periodically for any changes.

Contact Us

If you have any questions about this Privacy Policy, please visit our Contact page.