Here’s a bit of passive income with minimal effort: you can get a discount of 50 cents per gallon on gas at BP when you link any Visa card to your BP Driver Rewards account via this non-affiliate non-commission-generating link. From the ad copy:

Visa Cardholders who are enrolled in BP Driver Rewards and link their Visa card, will earn an additional 50 cents off per gallon for every $100 spent on BP fuel through March 31, 2016. You’ll earn rewards automatically when you pay for BP fuel with a Visa Card linked to your profile.

As always, it pays to look at the terms and conditions, which you can see here if you scroll down a bit. The first important part:

A Qualifying Linked Card allows you to earn an additional 50 cents off per gallon (on a max of 20gal) for every $100 spent on BP fuel at participating locations for fuel purchases made for 90 days from the date the Visa card becomes a Qualifying Linked Card (“Visa Linking Reward”).

So you have to spend $100 on gas before you’re eligible for the 50 cents per gallon discount, and that discount is capped at 20 gallons. The good news is, you can do the deal multiple times.

Some more fine print:

You may link up to 5 eligible Visa cards; however you will only receive the Visa Linking Reward on the first Visa card linked. Only purchases made after the date of linking will qualify for the promotion.

That’s an important point! Only the first Visa card you link gets the big discount, so choose carefully.

This promotion is open to both new and existing Driver Rewards accounts. Happily, the terms and conditions are clearer than they have been in the past for the BP Visa. One question I have: does BP know whether you’re purchasing fuel or non-fuel items?