will give shoppers as much as 10% cash back every time they buy anything through the site, from their weekly shopping to a holiday or electrical goods.
The Daily Mirror is backing the site with advertising across all platforms and an eight-page supplement in the newspaper.
Mark Hollinshead, managing director of nationals at Trinity Mirror, said: "MirrorCashback.com brings an innovative form of discount to online retail. This will be welcomed by our readers, especially in the current economic climate.
"The site also offers our advertisers a powerful additional marketing channel to reach our growing audience."
VAC Media, the biggest operator of consumer loyalty websites in the UK, is powering the site.
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