Could Italy leave the euro?
Well, it's unlikely.
Despite outspoken criticism of the European Union from both parties, the final version of the M5S-League government programme does not mention a unilateral exit from the eurozone.
M5S abandoned their idea of a referendum on the euro and while the League has called the currency "a failed economic and social experiment," the party has proposed a series of reforms and an eventual coordinated group exit along with a number of other countries in the long term.
Who is really in charge?
The two parties were in talks for two and a half months after March's election had an inconclusive result, before finally coming to an agreement.
M5S hold more clout in the new coalition having won almost 33 percent in the March 4th election, compared to the League's 17 percent -- even if League leader Matteo Salvini claims to represent the 37 percent who voted for his rightwing coalition.
While Salvini is the undisputed top dog of the League, the shadow of M5S founder Beppe Grillo, an outspoken former comedian, still looms large over the Five Star Movement, led by Luigi Di Maio since last autumn.
A question mark also hangs over the fate of flamboyant former premier Silvio Berlusconi. Part of the rightwing alliance with Salvini, Berlusconi begrudgingly gave the green light for the League and M5s to make a deal without his Forza Italia party. But the ageing media tycoon disapproves of the new government programme and, after a recent court ruling overturned a ban on him holding public office, could once again be able to exert influence from inside parliament -- if a member of his party offers up their seat.
Never afraid of a long shot, Berlusconi has also offered himself up as a potential future premier.
READ MORE: Eight reasons Silvio Berlusconi is still relevant in Italian politics
Both Di Maio and Salvini insist that they want to create a coalition that can last the full five-year mandate and implement their programme.
But their parties only have a wafer-thin six vote majority in the Senate, which holds the same power as the Chamber of Deputies, where they have a 32-vote majority. The two parties will have to hold onto their MPs -- especially those who view the new alliance with scepticism -- to go the distance.
How will markets respond?
A tumultuous campaign, inconclusive elections and a prolonged period of political deadlock meant that financial markets were already nervous, especially faced with the possibility of a return to the polls. So the prospect of a M5S-League accord was initially met with some relief -- until the coalition revealed their government programme.
In response to the document's costly financial measures and eurosceptic tone, key financial indicators pointed to decreasing investor confidence in Italy. The difference in yield between Italian and German ten-year government bonds has gained 40 points in less than a week, increasing to 170 points.
READ ALSO: Why economists are worried about Italian populists' government plan
What can the president do?
Officially independent from the main parties, Italy's president Sergio Mattarella has the power to veto ministers and reject any law deemed financially non-viable for the country.
He is also the guarantor of Italy's international commitments and will keep a close eye on any move to modify the country's role on the world stage, especially given Salvini's scathing comments about the EU and praise for Russian leader Vladimir Putin.
However, once a government is in place, Mattarella's role reverts to being largely ceremonial.
READ MORE: Who is Sergio Mattarella?
By Franck Iovene and Fanny Carrier