Privacy Policy
This policy explains what data SoleTraderTaxCalculator.co.uk collects, why, and your rights under UK data protection law. The site is designed to be useful without unnecessary personal data collection. Last updated: 29 October 2026.
Written and reviewed by James Whitfield · Last reviewed 29 October 2026 · Checked against 2026/27 HMRC rates · Editorial standards · Methodology
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Who is responsible for your data
SoleTraderTaxCalculator.co.uk is the data controller for personal data processed through this website. We are an independent UK personal finance calculator publisher. For any privacy question, correction request or data-protection concern, use the contact form at soletradertaxcalculator.co.uk/contact.
We process personal data in line with the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018.
Calculator inputs
When you enter profit, income, pension or other values into a calculator, those inputs are used to compute your estimate and are not stored on our systems as personal financial records. The calculation runs per request and the figures you enter are not retained against your identity.
Some inputs may appear as query parameters in your browser URL so that a result can be shared or reloaded. These exist only to regenerate the calculation and are not used to build a profile of you, although our hosting provider's standard request logs record page addresses, including those figures.
Purchases
Payments are taken by Stripe; we never see your card details. When you buy the Sole Trader Tax Pack, we keep the email address from your Stripe checkout with a download record, so we can give you your download link and help if something goes wrong.
If you use the Tax Bill Plan, your answers are sent to our server to produce the free result. If you buy the full plan (£4.99), your answers are stored with your order by Stripe, so the plan can be rebuilt each time you download it. Stripe's privacy policy is at stripe.com/gb/privacy.
What we collect
Analytics data: aggregate, non-identifying information about how pages are used (for example page views, approximate region and device type), collected through Google Analytics with IP anonymisation enabled and Google signals disabled.
Advertising data: where advertising is enabled, Google may collect data to serve and measure adverts, as described below.
Contact data: if you use the contact form, we receive the name, email address and message you provide, solely to respond to and record your query.
We do not ask for or store financial account details, and we do not sell personal data.
Google Analytics
We use Google Analytics to understand aggregate usage and improve the site. IP addresses are anonymised and Google signals (cross-device advertising features) are turned off. The legal basis is your consent, given through the cookie banner, or our legitimate interest in understanding aggregate site usage where analytics runs in a privacy-preserving mode.
You can opt out of Google Analytics across all sites using Google's browser add-on, and you can decline optional cookies using our cookie banner.
Google AdSense and advertising
This site may display adverts served by Google AdSense. Google and its partners may use cookies and similar technologies to serve adverts based on your prior visits to this and other websites, and to measure advert performance.
We use Google Consent Mode. Until you accept optional cookies, advertising is requested in a non-personalised mode where supported. If you consent, Google may use cookies for personalised advertising. You can review and control Google's use of data at google.com/technologies/ads, and manage personalised advertising through your Google account or the cookie banner on this site.
Cookies
We use a small number of cookies and similar storage: an essential record of your cookie choice, privacy-configured Google Analytics cookies, and, where advertising is enabled and consented to, Google advertising cookies. Full details, including cookie names, are on our cookie policy page.
You can accept or decline optional cookies through the banner shown on your first visit, and change your mind at any time by clearing site data in your browser.
Legal basis for processing
We rely on consent for optional analytics and advertising cookies (UK GDPR Article 6(1)(a)); on legitimate interests for keeping the site secure and understanding aggregate usage (Article 6(1)(f)); and, where you contact us, on our legitimate interest in responding to and recording your query.
Data retention
Calculator inputs are not retained as personal records. Aggregate analytics data is retained in line with Google Analytics settings (up to 14 months for user and event data). Messages you send us are kept only as long as needed to handle your query and any follow-up, then deleted.
Your rights
Under UK GDPR you have the right to access, rectify or erase your personal data, to restrict or object to processing, to data portability, and to withdraw consent at any time. To exercise any of these, use the contact form at soletradertaxcalculator.co.uk/contact.
If you are unhappy with how we handle your data, you can complain to the Information Commissioner's Office (ICO), the UK data protection regulator, at ico.org.uk or on 0303 123 1113.
External links
This site links to external websites, including GOV.UK and HMRC, for source verification. We are not responsible for the content or privacy practices of external sites. When you follow a link, that site's own privacy policy applies.
Estimate your sole trader tax
The sole trader tax calculator turns this guidance into a concrete monthly take-home and tax reserve estimate, based on 2026/27 HMRC rates. Enter taxable profit — not turnover.