Some background: in 2009 the debt brake [0] was enacted, limiting the budget deficit to 0.35% of the GDP. The current government tried to circumvent it (most economists seem to see the law as stupid, but that might well be my bubble), our constitutional court ruled the circumvention illegal, and now they had scramble and see how to make the budget work under those new constraints.

[0]: https://en.wikipedia.org/wiki/Debt_brake_(Germany)