Online retail spending has surged by 41% over the past year.
Banks say it's part of a push towards digital spending, but consumers have been warned to be careful of fraud.
The new study from Paypal found people spent an average of €503 shopping online over the course of 2021.
This was a big jump from the average of €357 in 2020, and was fuelled by internet shopping during Covid.
Head of the Banking and Payments Federation Brian Hayes says it’s part of a bigger push towards doing business online.
"Well there's significant change going on across the economy and that change was evident before Covid.
"What's happened since Covid we've seen an acceleration of that change especially to digital banking, online banking and contactless payments."
But Consumers Association boss Dermott Jewell says he expects in person shopping to remain popular.
As he says fraud can often be a problem when buying online.
"There's a phenomenal amount of fraud online. Consumers are consistently having to check with whom they're dealing with, to be sure they're real people.
So there are challenges attached to it."
Despite Brexit, UK purchases were common, with 74% of respondents buying from sites based there.
While just under half of those polled had bought something from sites based in the rest of Europe.