A huge change is set to be made in October, which will affect those who use contactless cards.
The payment limit on contactless payments is set to rise for the second time in less than two years, as the government tries to promote spending in shops.
Shoppers will be able to pay up to £100 using their contactless cards from October 15, trade body UK Finance said.
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The increase had already been announced by the Government earlier this year, but banks had not yet decided when to implement it.
Meanwhile some shops might take longer to introduce the new limit, because they need to update their terminals.
David Postings, chief executive of trade body UK Finance, said: "Contactless payment has proved very popular with consumers and an increasing number of transactions are being made using contactless technology.
"The increase in the limit to £100 will allow people to pay for higher value transactions like their weekly shop or filling up their car with fuel.
"The payments industry has worked hard to put in place the infrastructure to enable retailers to update their payments systems so they can start to offer their customers this new higher limit."
Chancellor Rishi Sunak said: "Increasing the contactless limit will make it easier than ever to pay safely and securely, whether that's at the local shops, or your favourite pub and restaurant.
"As people get back to the high street, millions of payments will made be simpler, providing a welcome boost for retailers and shoppers."
When contactless cards were first introduced in 2007, payments were capped at £10.
This rose to £15 in 2010, £20 in 2012, £30 in 2015 and £45 in April last year in the early days of the pandemic.
But the latest rise caused concern among some that it could be easier for fraudsters to spend people's money.
In March Gareth Shaw, head of money at consumer research and advice body Which?, said: "The risk of falling victim to contactless card fraud is currently low, but there is potential for thefts to rise if criminals take advantage of the increased spending limit to maximise the amount they can steal."
