"It's because we need to get to surplus and we're very honest about that.
"We've been very clear that we believe the surplus is something that is very important for not only the Government but also for every business that has to borrow money."
Ms Collins said the Government was able to cut levies partly because "we've been able to decrease the amount of people on long-term benefits from 11,000 to 8000".
"If there was a change of Government and we went back to the same old be-on-ACC-for-life-type situation that we inherited, then it could be turned around."
ACC's recommended cuts are underpinned by the fact that work and earners accounts are now fully funded, meaning they have sufficient money to meet the future cost of all their existing claims. Without the recommended cuts, ACC will be collecting more money than it requires, leaving it with the headache of what to do with the excess cash.
Labour's ACC spokesman, Iain Lees-Galloway, said National was "taking money it doesn't need to create the illusion of a surplus".
"ACC levies cannot be used for any other purpose. National is overtaxing every Kiwi worker and the money will just sit in the bank doing nothing. That's an incredible abuse of the Government's power."
Reducing the levies
The Government's cuts:
41% reduction in the combined motor vehicle levy totalling $438 million a year.
5% reduction in the work levy totalling $42 million a year.
ACC's recommended cuts last month
21% reduction in the work levy totalling $162 million a year.
40% reduction in the combined motor vehicle levy totalling $427 million.
5% reduction in the earners levy totalling $69 million.