National says the Government needs to front up on whether it'll tax people more.

Inland Revenue research shows the top one percent of earners pay a median effective tax rate of 9.4 percent, when including capital gains on investments.

Meanwhile, Treasury estimates a comparable tax rate for a "middle wealth" Kiwi is roughly 20 percent.

National Party Finance Spokesperson Nicola Willis told Kate Hawkesby there's no doubt Labour want more taxes.

“This is a government that is spending $1 billion more every week, they can’t get the books to add up, they are desperately searching for more places to find money.”

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