The federal government is considering a Productivity Commission proposal that could see up to 100,000 families no longer able to send their children to childcare.

The proposal would mean that both parents will need to work or study for 24 hours a fortnight to be able to access childcare subsidies.

Parents can currently claim the childcare benefit, which is based on the family's income, and the childcare rebate, which can cover up to 50 per cent of a family's out-of-pocket expenses.

If the proposal is put into place, this could be problematic for parents who are struggling to enter the workforce or are studying.

Mr Yates said he can understand why the government is considering the proposal, but also knows it will disadvantage many families.

"The good thing is that they're looking at simplifying the system by just having one subsidy, which is great," Mr Yates said.

"In terms of the 24 hours of work, that's probably going to have a big impact on Tasmanian families who are trying to get into the workplace.

"Access to childcare is always problematic for people who are studying because childcare is normally from about 6am until 7pm."