Last updated: August 2026
This Cookie Policy explains how Margin uses cookies and local storage technologies. It should be read alongside our Privacy Policy.
Cookies are small text files placed on your device by a web application. Margin also uses localStorage — a browser-based storage mechanism — to maintain your session and preferences. Neither is used for advertising or cross-site tracking.
| Name | Storage | Type | Purpose | Duration |
|---|---|---|---|---|
margin_token |
localStorage | Strictly necessary | Stores your JSON Web Token (JWT) to maintain your authenticated session after login. Without this you cannot remain logged in. | 7 days |
onboardingDone |
localStorage | Functional | Records whether you have completed the setup wizard so it is not shown again. | Persistent |
margin_prefs |
localStorage | Functional | Stores your UI preferences such as active panel and display settings. | Persistent |
stripe_mid |
Cookie | Third-party | Set by Stripe for fraud prevention and device fingerprinting during payment and billing portal sessions. | 1 year |
The authentication token is strictly necessary for the application to function securely. It cannot be disabled without preventing you from logging in. Under the Privacy and Electronic Communications Regulations (PECR), strictly necessary cookies and equivalent local storage do not require your consent.
Functional localStorage entries improve your experience by remembering your settings between sessions. They do not track your activity across other websites. You can clear these via your browser's developer tools at any time without losing access to the Service.
Stripe may set cookies on your device when you access payment and billing features. These cookies are governed by Stripe's Privacy Policy. We do not use any advertising, tracking, or analytics cookies.
You can control and delete cookies through your browser settings. Please note that disabling strictly necessary cookies will prevent you from logging in to the Service. For guidance on managing cookies in your specific browser, visit allaboutcookies.org.
We may update this Cookie Policy from time to time. Continued use of the Service after changes constitutes acceptance. For queries, contact us at hello@getmargin.co.uk.