Prime Minister John Key has dropped the strongest hint yet there could be changes to early childhood education funding - prompting fears thousands of parents will end up paying more.
During questioning this week Mr Key said he was not committed to keeping fee controls in place for the 20 hours scheme, something that would effectively allow centres to charge additional fees on free hours of care for more than 100,000 children.
Early Childhood Centres are subsidised so they can provide children over the age of 3 with 20 hours of free care. They are also subject to controls which prevent them from charging any additional fees for those 20 hours, although some teacher-led services can ask parents for "optional charges" if they have more than 80 per cent registered teachers.
Labour's education spokeswoman Sue Moroney has been questioning National about its plans for the popular scheme after speculation there are changes coming. The party has repeatedly said it is committed to 20 hours.
However, under questioning this week Mr Key gave the first indication that might not be the case.