One Nation has scrapped plans to fine any of its candidates who are elected at next month's WA election and then quit the party, following an outcry from members.

The party had asked candidates to sign a document committing them to pay $250,000 if they decided to leave the party while in Parliament.

The party's WA leader Colin Tincknell said the $250,000 was an "administration fee" that had been proposed by the party's national office, but was now a "non-issue".

"We thought it was a good idea - 99.9 per cent of the candidates signed that form, but one or two of them brought up some really good discussions," he said.

"We debated it and we decided to not go ahead and the national body agreed with us.

"We won't be going ahead with that part of the letter."

All of the One Nation MPs elected in Western Australia have eventually gone independent.

Rod Culleton, who was elected as a One Nation senator at last year's federal election, left the party within months.

The three One Nation candidates elected to the WA parliament in 2001, Frank Hough, John Fischer and Paddy Embry, also quit the party during their terms.

Mr Tincknell said it was not right to be elected under a party banner and then leave.

"We're just trying to look at ways of tightening up the way our political party runs, so people that stand for One Nation stay with One Nation once the public have elected them to represent them for One Nation in Parliament.

"That's a fair and equal way of operation, so that's what that was all about."