The initiative, launched by executive chairman Rupert Murdoch, saw every member of staff from News UK, Dow Jones and Harper Collins receive vouchers worth £10 to spend in Borough Market and surrounding businesses.
The vouchers, donated by News UK, represent a £30,000 boost to local businesses.
"As the families and friends of those who lost their lives or were injured remain firmly in our thoughts, we wanted to do something impactful for the many hidden victims," said News UK chief executive Rebekah Brooks.
"We are a proud member of the Southwark community and a close neighbour to Borough Market, and couldn't just stand by.
"Any business would suffer from losing over a week's worth of revenue and these businesses and traders needed our support in making it up. We will continue to support local business in any way we can."
Borough Market managing director Darren Henaghan said: "A big thanks to our neighbours at News Corp UK for all the support they've given to our traders and the businesses since the attack.
"The most important thing for all of us is that people are here again, shopping, eating and enjoying all that Borough Market has to offer, helping us to get back doing what we do best: selling wonderful food and drink in an atmosphere of love, friendship and togetherness."
Rupert Murdoch and Rebekah Brooks attended the ceremony to mark the reopening of the market on 14 June.
News UK also sponsored the printing of the orders of service for the two 'Services of Hope' held at Southwark Cathedral after the terrorist attack.