The fight over ATM fees is expanding overseas, with ING Australia offering fee-free withdrawals from every ATM in the world to customers who conduct their main banking business with the digital bank.

The move comes as banks face pressure to roll back unpopular fees, while ING is seeking to bulk up its share of the market by targeting regular overseas travellers or shoppers at foreign websites.

As well as scrapping ATM fees internationally, it will also remove international purchase fees from its credit and debit cards – which were previously 2 per cent of the purchase price.

To qualify for the offer, customers will need to deposit at least $1000 a month into the account, and make at least five card purchases each month.