Prime Minister Malcolm Turnbull will deliver a national apology to victims of institutional child sexual abuse on October 22 this year.

Key points: The Federal Government will adopt 104 of 122 recommendations from the royal commission, and is still considering 18

The Federal Government will adopt 104 of 122 recommendations from the royal commission, and is still considering 18 That includes forcing priests to report information revealed to them during confession

That includes forcing priests to report information revealed to them during confession WA will sign on to the national redress scheme, clearing the way for compensation to begin on July 1

Mr Turnbull this morning outlined the Federal Government's formal response to the five-year Royal Commission into Institutional Responses to Child Sex Abuse.

The Prime Minister said 104 of the commission's 122 recommendations relating to the Commonwealth would be adopted, including the establishment of a national office for child safety.

The Government will consider the other 18 recommendations but noted none had been rejected.

A recommendation to make it an offence to fail to report that a child is at substantial risk is still being considered because states have to all agree on the wording.

The royal commission recommended forcing priests to report information revealed to them by people making confession.

Federal Attorney-General Christian Porter has made it clear he supports the contentious recommendation.

But the Australian Catholic Bishops Office said there had been no compelling evidence to suggest that removing the protection for confession would improve child safety.

Hetty Johnston, who founded the child protection organisation Bravehearts, said it was "rubbish" for the Church to argue confession should be kept secret if that meant children were in danger of harm.

"There is nothing more important than the best interests and safety and protection of children," Ms Johnston said.

"Any institution that would put its own culture or processes above the best interests of children is an organisation that no longer deserves any kind of support."

WA to sign on to redress scheme

Mr Turnbull confirmed Western Australia would also be joining the national redress scheme for victims of abuse, becoming the last of the states and territories to sign on.

WA Premier Mark McGowan has said the state intends to join the national redress scheme in the coming weeks but the decision is yet to go before Cabinet.

Mr Turnbull paid tribute to survivors and their families for their bravery, honesty and strength in coming forward.

"For many of you, the royal commission was the first chance you had to be heard, to be have your pain acknowledged and most importantly to be believed," Mr Turnbull said.

"You were believed and the wrongdoers have been brought to account.

"Your courage has helped expose the scale of institutional child sexual abuse in our country."

A national office for child safety and a national redress scheme to provide payment to victims will both start on July 1.

Social Services Minister Dan Tehan said so far 93 per cent of victims were estimated to be covered by the scheme.

The maximum payment is $150,000, which is lower than the $200,000 recommended by the royal commission.

But Mr Tehan said the average payment to victims would be higher than the royal commission called for.

He said the federal and state governments had agreed that the average payment would be $76,000 when the commission recommended $60,000.

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The Government said there would be a "relatively low threshold" for victims to apply for money under the redress scheme as it was not designed to be fought out in the courts.

The states and religious institutions are due to respond to the commission's report this month.

A committee has been working on the wording of the apology that Mr Turnbull will deliver on October 22, which coincides with National Children's Week.