Social Services Minister Christian Porter with his son Lachlan and Financial Services Minister Kelly O'Dwyer with her daughter Olivia at the ministerial swearing ceremony in July. Credit:Alex Ellinghausen

Since the program was introduced, immunisation rates have increased across the board for one, two and five-year-old children. For the first time, five-year-old coverage rates are now over 93 per cent, the highest ever.

Mr Porter said that particular program was so successful because it was carefully targeted and based on thorough research.

"What I'm proposing, simply, is that there are other areas where if you had the same stringency of design, it's quite possible that you could have also very good results. I must say that one of them, to my way of thinking, is the linking of payments to school attendance," Mr Porter said.

"That's been mulled over for a long time but with the sort of data that we've got available, and the ability to track longitudinally success rates on a range of measures, I think these things are worth looking at."