Union Government
Notwithstanding the usual procedure, the House of the People may: (a) make a grant in advance for part of a year's estimated expenditure, pending the full budget process (a "vote on account"); (b) make a grant for an unexpected demand too large or indefinite to detail normally (a "vote of credit"); (c) make an exceptional grant outside the normal annual service. Parliament may authorise withdrawal from the Consolidated Fund for these purposes, following the same scrutiny procedure as ordinary grants.
This provides flexibility for exceptional financial situations: a "vote on account" lets the government access some funds before the full budget process is complete (useful when a new government needs money to keep functioning before its first full budget is passed), a "vote of credit" covers genuinely unpredictable emergencies, and an "exceptional grant" covers one-off needs outside normal annual spending.
This is why, in an election year, an outgoing government typically seeks only a "vote on account" to cover a few months of essential spending, leaving the full annual budget to be presented and debated by the newly elected government once it takes office.