The Government's been teasing changes to the Kiwisaver scheme, with more to be revealed today

Finance Minister Nicola Willis is hours away from unveiling her 'No BS Budget', claiming there'll be no frills or excess.

Its expected to increase Kiwisaver's default contribution rate from the current 3-percent, as well as means-testing its own annual contribution, up to 521-dollars.

Business NZ CEO Katherine Rich says they'll be keeping a close eye on things.

She says it depends on how it's phased in over time, so businesses can factor it in to wage negotiations and salaries.