"The government is clear in its aims: a deal that works for every nation and region of the United Kingdom and indeed for all of Europe a new, positive partnership between the United Kingdom and our friends and allies in the European Union", Davis, secretary of state for exiting the European Union, said.
The notification of Article 50 will take the form of a letter to Tusk, likely outlining Britain's key objectives, followed by a statement by May to MPs in the House of Commons.
Prime minister Theresa May has said she wants to leave the European single market in order to be able to control immigration.
The prime minister heads into the European Union negotiations with her premiership, Britain's economy and even the United Kingdom's viability as a unified country all on the line.
As the Prime Minister visited the country this morning ahead of triggering Article 50, Ms Wood told the BBC that "all options should be on the table".
Despite meetings of the devolved nation leaders in Westminster she said Theresa May has so far displayed few signs of taking on board Wales' needs. The draft is broadly ready, based on what May said in a key speech in January, but may need to be fine-tuned, European Union officials say.
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A spokesman for the PM said that the United Kingdom has informed European Council president Donald Tusk's office of May's plan to formally trigger Britain's exit from the EU.
Once Article 50 is triggered, Council President Donald Tusk is expected to provide an initial response to the Prime Minister within 48 hours, and the remaining European Union 27 countries will then put together a timetable for negotiations on the UK's withdrawal to take place.
Reacting to the confirmation of the date, Karen Briggs, head of Brexit at KPMG said, "Although the UK's substantial financial contribution to the European Union and its status outside the Schengen Area offer the opportunity for a unique deal to be struck, businesses still need to plan for a "no deal" scenario".
However, the negotiating game will now begin, and attention will be paid to whether there is any reaction on foreign exchange markets in particular, with sterling tending to weaken on any indications of a hard Brexit.
"So, that takes a big chunk out of the Government's capacity to legislate".
The extra measures will place "a huge burden" on Parliament and government departments, the think tank says.
EU leaders have said they want to conclude the talks within 18 months to allow the terms of the UK's exit to be ratified by the UK Parliament and the European Parliament, as well as approved by the necessary majority of EU states.