Even surfers at famous Illawarra break The Farm would have to pay for access to the beach.

The proposed $8-10 entry fee is one of three major changes included in a business plan the Killalea State Park Trust will present to the State Government next month.

Other changes include six tourist cabins envisaged near the existing camping ground and a new southern entrance to the popular tourist and surfing destination.

The proposed gate fee would match charges at other developed state parks, which range from $7 to $10, according to trust president Ed Gilmore.

Regular park users could save money with an "attractive" annual pass in the order of $80.

"We really aim to make the park viable," he said.

"We are losing money at the moment and we need to increase the cash flow to break even.

"We think the combination of a gate entry fee and the establishment of some additional cabins will achieve this."

But park users say an entry fee - especially one as high as $10 - would make it too expensive for some people.

Killalea National Surfing Reserve Committee chair Chris Homer believes surfers at The Farm will oppose the changes.

"Obviously for surfers it would be good if we got the gate fee waived for us, but I just think it should be free regardless of what sector of the community - whether it's surfers, fishermen or recreational users," he said.

"These places are there for the wider community to enjoy and regenerate and relax, and I just don't think it would be good for the wider community and those on a lower socio-economic scale to be slugged with another fee."

Save Killalea Alliance secretary Mairi Petersen said fewer people would visit the park if the gate fee went ahead.

"There are few enough areas where people, particularly with young families, can go and have a very nice day without having to pay," she said.

"Putting a fee on Killalea would make it almost impossible."

Killalea State Park receives about $240,000 from the State Government each year.

The Crown Lands division of the Department of Primary Industries had been briefed on the proposed entry fee, a department spokesman confirmed, and cabins and options were being explored for a second access point.

"Crown Lands has requested a formal business plan to be developed by the Trust for Crown Lands and the minister's review," he said.

Mr Gilmore anticipated some regular users would welcome the entry fee, which he said could help preserve the park and reduce vandalism.