Facebook ended up with an £11.3 million ($14 million) tax credit in the U.K. last year, which more than offset the amount it was charged, according to a new company filing, adding to concerns that the social media giant isn't paying enough into the country's coffers.
The U.S. social network paid £4.1 million in tax to the U.K. in 2015, a sharp rise from the £4,327 in 2014 that sparked outrage from campaigners, accounts filed with Companies House showed.
But it reported a tax credit of £11.3 million for the year, which effectively can be used to offset future payments. The credit stemmed from tax rules linked to an employee bonus program at Facebook.
"We pay all the taxes that we are required to under UK law, " a Facebook spokesperson told CNBC.
"We are proud that in 2015 we have continued to grow our business in the UK and created over 300 new high skilled jobs. The UK is now home to some of the most innovative technologies in the world including our investment in a high-tech solar powered plane centre in Somerset that will help bring the internet to remote areas of the world."