By Steve Scherer and Gavin Jones
ROME (Reuters) - Italy's two anti-establishment parties promised on Friday to ramp up spending in a programme for a new coalition government, putting them on a collision course with the European Union despite having dropped some of their most radical proposals.
The "contract" between the League and the 5-Star Movement, the two parties that won the most parliamentary seats in an election on March 4, was overwhelmingly approved by 5-Star's members in an online vote held after the document was unveiled.
"More than 94 percent of 5-Star Movement members who participated in the vote have said yes to the contract for the 'Government of Change'!", 5-Star's 31-year-old leader Luigi Di Maio said on Facebook on Friday evening.
There had been "great participation", he added, with 44,796 of the movement's 140,000 members casting votes, compared with fewer than 40,000 who elected Di Maio as party leader in September.
The League will consult its own supporters in an informal ballot organised in squares around the country on Saturday.
Di Maio and League leader Matteo Salvini said they would meet President Sergio Mattarella on Monday. Mattarella must give his blessing to the programme and to their candidate for prime minister, who has yet to be named, before a government can be formed.
The document, published after 11 weeks of political stalemate in the euro zone's third-largest economy, calls for billions of euros in tax cuts, additional spending on welfare for the poor, and a roll-back of pension reforms.
The euro sank on the latest developments on Friday and was headed for its fifth straight weekly fall against the dollar, in what would be a first for the currency since 2015.
"The possibility of a eurosceptic government in Rome is shaking investor confidence ... at this point, a larger fiscal deficit and greater bond issuance (in Italy) does seem likely," said David Madden, a strategist at CMC Markets.
The final accord dropped a previous draft proposal, seen by Reuters, to create fiscal headroom by adjusting the formula used to calculate debt burdens in the EU, and contained nothing questioning Italy's membership of the euro.
But it still called for a review of EU governance and fiscal rules -- setting the stage for the bloc's biggest political challenge since Britain voted to leave two years ago.
Both parties have a history of euroscepticism. 5-Star has moderated its position over the last year, but the League still wants to leave the euro zone as soon as politically feasible.
The document is seen as the basis for governing for the entire five-year legislative term.
After agreeing on a prime minister and cabinet team, the coalition will have to overcome confidence votes in parliament, and it has only a slim Senate majority of fewer than 10 seats.
Since there are few specific estimates on the costs of the measures, economists have come up with their own based on previous drafts. Carlo Cottarelli, a former senior International Monetary Fund official, estimated the annual cost of the measures at as much as 126 billion euros ($148 billion).
Di Maio dismissed concern about the costs of the policies because, he said, they would stimulate growth, which would increase state revenue. "And there is leeway in Europe that we have to reclaim to be able to spend."
Italian government bonds lost more ground on Friday, with 10-year yields set for their biggest weekly jump in almost three years. Investors are worried that a G7 nation, with a debt burden second only to Greece in the EU, is about to embark on a huge spending spree.
Italian shares also lost 1.5 percent.
The accord includes a plan to securitise the debt that the government owes to companies and individuals, creating short-term bonds -- IOUs -- that can be traded.
Earlier this year, outgoing economy minister Pier Carlo Padoan described the proposal as "a plan to circulate a disguised parallel currency".
"Something must be done to resolve the problem of the public administration debts to taxpayers," the accord said.
Claudio Borghi, the League's economic chief who helped write the government plan, told la Verita newspaper that the new securities could be "spent anywhere, to buy anything".
Salvini's pre-election ally, former prime minister Silvio Berlusconi, accused him of betraying their centre-right electoral alliance and urged him to back out of the deal with Di Maio and "come back home".
($1 = 0.8491 euros)
(Additional reporting by Crispian Balmer, Stephen Jewkes, Stefano Bernabei and Giuseppe Fonte; Editing by Mark Bendeich and Catherine Evans)
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Updated Date: May 19, 2018 02:05:42 IST