Shoppers can get £5 off a £15 basket of shopping at the Co-op just by downloading an app or going online.
The supermarket chain is running the offer for customers downloading the app before June 15, and you have until the same date to get the £5 off.
Technically the deal is for what the Co-op calls new 'members' – those registered with the supermarket.
Apart from downloading the Co-op app, you can be a member by signing up online or by in-store.
This then lets you get a discount on shopping worth at least £15 in one go.
You can get a discount on most goods, but some are restricted, such as alcohol, baby milk, lottery tickets, phone top-ups and tobacco products. You also cannot use the offer to try to get £5 in cash, and you cannot get money off in Co-op's other stores such as Nisa or Costcutter.
The retailer is offering money off – but it'll cost you £1 to sign up
(Image: Bath Chronicle)
To get the cashback, you must activate the digital offer on the app or online, then scan your membership QR code, card, or key fob at the till before paying.
New Co-op members who buy a temporary card instore must activate it online at www.coop.co.uk/membership or via the app.
However, becoming a Co-op member costs £1, so if you only plan to sign up just to get the £5 off, this means you effectively get a £4 discount.
But being a member also means you can get further perks and discounts, and you get lifetime membership for your £1.
When you buy certain Co-op products and services, 2p for every £1 you spend goes into your Co-op membership account. You can spend the rewards you earn on most things you buy from the supermarket.
Members get discounts on selected items in Co-op stores. They also get money off the Co-op's other services, such as £125 off a funeral plan or 10% off life insurance.
The Co-op will also donate 2p per £1 spent to good causes.
Co-op director of membership Greg Hutchison said it would "support thousands of local causes across the UK, as well as like-minded national charities and organisations".
You can still get the £5 off as well as your usual discounts from having a Co-op colleague card, or an NUS Extra, NUS Apprentice Extra or Young Scot card.
However, you must still spend at least £15 once these discounts are accounted for.
In April, the Co-op announced a new management structure that would affect 2,000 jobs.
The food retailer is removing the role of team manager, with those currently in this position being asked to move to a lower-paid title or take redundancy.