New Zealand could have one of the least competitive corporation tax rates - but that could change by May.
The Prime Minister has hinted this year's Budget could make way for relief.
The rate has stayed on 28 percent since 2011 - but Finance Minister Nicola Willis is making comparisons with countries like Ireland, with a 12.5 percent rate.
Advisory expert Robin Oliver says such a change would have a big impact.
"If we went down to 25, that'll cost us about a billion dollars per annum in tax - and that still wouldn't be much competitive compared to these small, open economies."
LISTEN ABOVE

Nicola Willis: Finance Minister on the pre-election opening of the Government books
06:27

Murray Olds: Australian correspondent on whether the RBA is set to lift the OCR again
04:10

Richard Arnold: US correspondent on Bill Gates warning that AI growth can't keep 'going unchecked'
05:18