The Finance Minister admits the Budget could have gone further on tax cuts, but it wouldn't have been responsible.

Today's documents included the Government's long anticipated tax package, at a cost of $3.68 billion.

Funded through a suite of scrapped spending initiatives, all workers on more than $14,000 a year will receive between $4 - $40 dollars a fortnight.

Nicola Willis says she was determined that every dollar of tax relief would be fully funded.

"But we also needed to find a lot of money for frontline services. For hospitals, for the Pharmac budget, for our police, for schools - this was the tax reduction that we felt was prudent." 

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