The meeting comes two days after Slovenia's highest court struck down the real estate tax act due to broad incompatibilities with the Constitution.

The tax was a key component of this year's budget and its annulment leaves this year's budget some EUR 170m short in revenues.

The four coalition partners said already on Friday that a solution for offsetting the lost revenues was possible and that the ruling of the Constitutional Court would not have far-reaching political consequences.

They rejected calls from the opposition for the government to resign over the ruling.

It is unclear what possibilities for replacing the real estate tax will be on the table tonight, although PM Alenka Bratušek warned on Friday that likely solutions would be more painful than the proposed tax.

Pensioners' Party (DeSUS) leader Karl Erjavec has mentioned the possibility of a new increase in value added tax, but it is unclear how much support such a proposal would have with the other parties.

The debate could test the unity in the coalition, since Erjavec has also rejected any possibilities for cuts in pension-related spending, while the Citizens' List (DL) opposes new taxes.

In addition to ways to stitch together the budget, the coalition parties are also expected to discuss nominees for the vacant position of health minister, including surgeon Danijel Bešič Loredan, who met Bratušek on Saturday after indicating his readiness to assume the portfolio.