The service, Equifax Marketing Connections, is a combined file of Electoral Roll, CCJ and payment data, covering more than 80m name and address entries, including current and previous address histories.
Equifax introduced the tool to give financial services access to more accurate data and reduce the risk of firms making offers to those who can not afford them.
For each name and address, a combination of more than 500 credit characteristics has been created -- at individual, family and household levels, to give businesses all the information they need for the most effective credit pre-screening.
Dave Webber, head of products at Equifax Marketing Services, said: "This means we can offer much higher levels of accuracy for matching names for pre-screening.
"It also means that marketers can have access to infinitely more accurate data in respect of those prospects most suitable for a credit offer.
"We believe this is crucial in supporting government initiatives to reduce indebtedness and helping the financial services industry to optimise the cost-effectiveness of campaigns and protect their brands."
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