Cookie Policy
Last updated: 13 September 2026
Cookies are small files a website stores in your browser. We also use browser storage ("local storage") for the same purposes. This page lists everything MTDFox sets, why, and for how long. Strictly necessary items are set without asking because the service does not work without them. Anything else is set only after you choose Accept on the banner.
Strictly necessary
| Name | Purpose | Lasts |
|---|---|---|
| session | Keeps you signed in and remembers which account you are working in. | 30 days |
| csrftoken | Stops other sites submitting forms as you. | Browser session |
| fph | Carries the browser details HMRC requires with every submission (screen size, time zone, browser). Set only while you are signed in. | Browser session |
| device id (local storage) | A random identifier for this browser that HMRC requires us to send with submissions to help detect fraud. It is not used for advertising. | Until you clear browser storage |
| tp-consent, tp-cookie-ok (local storage) | Remembers your cookie choice so the banner does not reappear. | Until you clear browser storage |
Optional: analytics and advertising
These load only if you choose Accept. If you decline, nothing below is set and the site works exactly the same.
| Name | Set by | Purpose | Lasts |
|---|---|---|---|
| _ga, _ga_* | Google Analytics | Counts visits and pages so we can see which guides help. IP addresses are anonymised. | Up to 2 years |
| _fbp | Meta Pixel | Measures whether our adverts on Facebook and Instagram led to a visit. | 3 months |
Neither of these is switched on at the moment. If we switch them on, the banner will ask you first.
Change your choice
You can change your mind at any time. clears your answer and shows the banner again on the next page. You can also delete cookies in your browser settings; you will be signed out if you delete the session cookie.
Third parties
Stripe sets its own cookies on its checkout page when you pay. GoCardless sets cookies on its pages when you connect a bank. HMRC sets cookies on its pages when you authorise MTDFox. Each is covered by that company's own policy, linked from the page you are on at the time.
Questions: info@mtdfox.co.uk. See also our privacy policy.