I am not a parliamentary expert but there are lots of ways I think. Not passing a supply bill (equiv to the budget crisis) would trigger an election, not passing a non-supply bill repeatedly can be a trigger, a motion of no-confidence in the government. Or governments can resign.

Not being able to pass bills required to finance the government would be seen as equivalent to the government having lost the confidence of parliament and I think under a Westminster system they would have to resign or face being dismissed by the head of state as they have clearly lost the ability to govern.