It is now accepted the capital gains discount will be hit; also, negative gearing is likely to be altered.Other sweeteners in the tax or housing areas are possible — if they come they would have, at least in part, an intergenerational equity lens.The government is under pressure not to splurge in the budget, not least because the Reserve Bank will be watching closely And getting the NDIS announcement out now means Chalmers' budget night can concentrate on the good news.Early signs are that the opposition will back the thrust of the changes (while noting that when the Morrison government tried to make some reforms, they were demonised by the then Labor opposition).As the government puts together its budget — with the prime minister saying "resilience" will be at its centre — the context is dominated by the Middle East conflict and the alarming prospects for fuel supplies if the situation is not resolved soon.The government is now confronted with a campaign that has considerable community support for a new tax to be imposed on gas exports, as companies stand to benefit from the higher prices brought by the international crisis.This week, the battle over the tax was ventilated in often heated hearings at a Senate inquiry, chaired by the Greens, which will report before the budget.One of those arguing for a new tax is Ken Henry, formerly head of treasury, who chaired the far-reaching tax inquiry commissioned by the Rudd government (which recommended a mining super profits tax).In his submission to the Senate inquiry, Henry dwelt on generational equity