MPs like Slipper not above the law: Abbott

Prime Minister Tony Abbott says the Peter Slipper case shows no one is above the law.

The former federal parliamentary Speaker and Queensland MP was found guilty on Monday of three counts of dishonesty and could face up to a year in prison or $10,000 in fines when he's sentenced on September 22.

Slipper admitted using his government travel entitlements to visit wineries outside Canberra on three separate occasions in 2010 but always denied he acted dishonestly.

His legal team is considering an appeal against the conviction.

Mr Abbott says the decision speaks for itself.

"In the end it's got to be one law for everyone, from the highest in the land to the lowest in the land," Mr Abbott told Macquarie Radio on Tuesday.

Opposition Leader Bill Shorten says it is disappointing and saddening to see an MP conduct himself in the way Slipper had.

"I completely deplore the set of circumstances and we completely deplore what has happened here."