Privacy
Pump Margin is operated by Breadcrumb Labs. This notice covers the calculator at this site. Effective October 30, 2026.
What we collect
We save the prices and location you enter in the calculator. After you pick a city, change an input, and pause, we store a calculation event with:
- Fuel type, mode, wholesale price, freight per gallon, the street price used, net margin, margin percent, the sales-tax rate used, and the per-gallon excise, prepaid tax, UST fee, sales tax, and total cost used
- District rate and whether it came from a city match or a manual entry
- ZIP, city, and county
- The station address, city, county, ZIP, and station name, if you enter them. They are stored together as a station site so your calculations can be grouped by station. Location means only the station location you type in. We never use your device's location or your IP address to find where you are.
- A random browser id (not your name or email), kept in this browser's local storage and a first-party cookie named pumpmargin_bid for up to 400 days, and the formula version. No advertising or third-party cookies.
These rows are not linked to your name. We do not collect your name, revenue, or gallons.
The page loads its typeface from Fontshare (api.fontshare.com). That request sends your IP address to Fontshare.
The email list is currently off.
If you join the email list, we save your email, the topics you checked, the consent text, and the time you agreed. We also save a snapshot of that calculation: fuel, wholesale, street, margin, county, and ZIP. Joining links this browser's earlier and later calculations, and the station sites entered in it, to your email. Stations stay on this browser. They sync to another device after you sign in there with the emailed link or code. A random browser id is kept in this browser's local storage and a first-party cookie named pumpmargin_bid. It is not your email. Forget, unsubscribe, or clear site data ends it. It also ends after 400 days unused.
If you ask to sign in, we email a one-time code and a link that expire after 15 minutes.
Forget this browser
The button below removes the browser id, the email identifier, the saved city, and freight from this browser's storage and cookie, and unlinks that browser id from saved calculations and station sites. Forget or unsubscribe ends linking of later calculations.
IP addresses
We use IP addresses briefly, in memory, to limit how often someone can submit. We never store IP addresses.
Why
We save those prices and locations to see how operators use the tool and to improve it. We do not sell or share this information.
How long we keep it
Saved calculator events are kept for 24 months. A deletion job removes calculator rows older than that. Unsubscribing marks the email row unsubscribed and does not delete it. We keep that address so a later email program can suppress it. Email records are kept until you ask us to delete them.
Your choices
Until you pick a city, the page does not show a margin and does not save a calculation. Leaving the page on its defaults does not create a log row.
Contact
When you sign up, we send a welcome email through our email provider, Resend. To unsubscribe, or to request deletion, use the contact email below and tell us the address you submitted. Calculator rows are not linked to your name unless you joined the list.
Contact email: privacy@bclabs.dev
Postal address: 2851 Highland Ave, Suite 123, PMB 118, Selma, CA 93625