The Finance Minister is confident he's struck the right balance in his sixth Government Budget.

Grant Robertson has today unveiled a family-focused spend-up, which includes a scrapping of prescription fees and free public transport for under 13s.

From next March, 2-year-olds will also be eligible for 20 hours free early childcare.

He says there are a zillion things they could do, but it's about weighing up priorities.

"When it comes down to it, when you look at what's in this Budget, 79 percent of the new operating spending is cost pressures. So it really is just dealing with the stuff that's in front of us."

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