Information withheld from the budget shows high income couples may suffer scarcely at all while low income families on benefits could lose as much as 10 per cent of their incomes.

The information, normally included in the budget, calls into question the Treasurer's claim that "everyone is being asked to make a contribution".

Minus the table: Joe Hockey's federal budget is the first without detailed family outcomes.

Inserted into the 2005 budget by treasurer Peter Costello and included in every budget since, the table is usually titled "Detailed family outcomes".

It sets out the way in which the budget measures make different types of families better or worse off. In 2005 Mr Costello displayed the results for six family types at 15 different levels of incomes.