Independent and Catholic schools are dealing with a 5 per cent cut to their state funding, as well as the flow-on effect of cuts to come for state schools that their funding is tied to.

Thousands of people have signed postcards and a petition calling for the 5 per cent to be scrapped.

However, Education Minister Nick McKim has denied this will lead to fee increases of 10-14 per cent as parent groups have warned.

He said the 5 per cent equated to a $2.5 million saving in 2011-12, or $100 for each non-government school student.

No other cuts will be felt by the non-government sector this financial year.

Mr McKim said based on the most up-to-date economic information he predicted there would be a further 1.6 per cent cut in 2012-13 and 0.7 per cent in 2013-14 under a flow-on effect from state school cuts.

``After three years the total effect (of all cuts) may be 7.5 per cent . . . which would equate to approximately 1.2 per cent of their (an average Catholic school) annual school income,'' Mr McKim said.

``On the basis of this analysis I would encourage a reassessment of the fee increases that are being advocated by petitioners, as none of this analysis supports a contention that schools will need to raise their fees by 10 per cent or 14 per cent.''

The Tasmanian Catholic Education Office is due to meet Mr McKim tomorrow to keep pushing for the 5 per cent cut for non-state schools to be abandoned.

TCEO director Trish Hindmarsh said her office had never claimed the cuts would lead to fee increases of 10-14 per cent.

However, she maintains that adding 5 per cent to whatever pain the non-government sector would suffer alongside state schools was unjust.

``Of course we will have to raise our fees (in future) in order to maintain the quality of education, but as to what extent we wouldn't be prepared to say now,'' Dr Hindmarsh said.

``Even though it (state money) is not our main source of income that's not the point. The state government has a duty to fund us and there was an agreement (in place).''

The Tasmanian Catholic School Parents & Friends Federation president Damian von Samorzewski still believes that all cuts could collectively result in large fee increases.

``You have to remember that there's a certain percentage of parents in our schools who don't pay fees now,'' he said.

``The minister is using per person figures and averages but at some schools up to 40 per cent of parents don't pay.''