Google will be hit with a record fine for abusing its monopoly over internet search on Tuesday, seven years after the EU began investigating the technology giant.

The European Commission plans to announce its decision into the long-running case on Tuesday morning, it is understood.

The commission will impose the record fine for breaking EU competition law, saying Google used its dominant search engine to unfairly promote the Google Shopping service at the expense of smaller price-comparison websites.

The penalty will eclipse the previous €1.1bn (£1bn) record fine Intel was forced to pay in 2009 and the EU may also demand that Google make changes to its search results so that it is not seen to favour its own service.

Margrethe Vestager, the European Competition Commissioner, is believed to be preparing an announcement for Tuesday, although this could be pushed back to Wednesday.