Talks on policy between the four parties hoping to form a right-wing government in the Netherlands will start in earnest on Monday morning, but divisions have already emerged between them.

VVD leader Dilan Yesilgöz said on Sunday that she plans to take a “tough” line in the negotiations and that having “clear financial limits” is of crucial importance to her party.

“It is a fact that we must make major savings,” Yesilgöz told current affairs show WNL op Zondag. “And for the VVD is it important that we don’t just randomly increase taxes and put up costs, but that we look at where can we make reductions,” she said.

Civil servants estimated earlier that the government needs to make savings of €17 billion in the coming years to keep the budget deficit within the EU 3% norm.

However, Geert Wilders, leader of the far-right PVV, hit back on social media, saying no facts have yet been established.

The negotiations still have to start, he said. “Nothing is not a fact,” Wilders wrote. “But the PVV does want lower costs for the people.”

After putting some of his more extreme ideas about closing mosques and banning the Koran on ice, Wilders has said he is not prepared to make any more concessions and that he also plans to take a “very tough” line in the talks.

The negotiations are entering the next phase under the leadership of CDA stalwart Richard van Zwol, who chaired a commission warning in January that migration needs curbing, and Elbert Dijkgraaf, a professor of economics who sat in parliament for the orthodox Christian party SGP until 2018.

They have been given eight weeks to come up with agreements on 10 key themes, although these may be expanded to 12 with the inclusion of education and climate as separate topics.

The first two issues up for discussion on Monday are housing and public safety.