The calculator comes with a disclaimer, telling users that the calculation they get is only an "illustration" of what a family might receive, and that in practice the amount is likely to be higher.

That is because a family's actual child benefit is calculated based on a family's adjusted net income, which is the total net family income less any taxable benefits, such as the universal child care benefit, and plus any repayments to government on benefits such as the registered disability savings plan.

The Canada child benefit was the centrepiece of the federal government's attempt to help the middle class. It kicks into effect on Canada Day and will increase payments to most Canadian families with children 17 and under.

This new tax-free benefit replaces both the income-tested tax-free Canada child tax benefit and the universal child care benefit, which was taxable.

The benefit is designed to provide more assistance to low-income families. The more a family earns the less they will receive in benefits.



Power Panel: Budget winners and losers8:54

Who gets what

A family with a $90,000 income and two children between the ages of six and 17 would get $4,650 a year, or $387 a month.

If that same family earned only $30,000 a year they would get $10,800 a year or $900 a month, but if they earned $170,000 a year they would only get $90 a year or $7 a month.

If this same family earning $170,000 a year had children under six, it would be a different story. They would get $2,090 a year or $174 a month.

A family with two children under the age of six earning only $30,000 a year would get $12,800 or $1,066 a month, which is about $2,000 more a year than if both those children were between the ages of six and 17.