One common method of estimating the cost of raising children is the “budget standards” approach. This method calculates the value of a set collection of goods and services for families both with and without children, with the difference indicating the cost of having children.
Living standards are measured by what share of total household income or expenditure is spent on basic items, such as food or utilities.
The logic here is that a family that spends a lower share (on average) on basic goods has a higher standard of living than a family that spends a higher share on basic goods.
Alternatively, our focus lies on a survey-based statistical technique known as “iso-welfare.” This method evaluates the living standards across various households by determining how much additional income or expenditure is needed to maintain the same quality of life between families with children and those without.
Using Housing Income and Labour Dynamics in Australia (HILDA) data, we model financial stress against income and a range of other household variables and estimate how much extra disposable income a family with children needs to maintain the same living standard as a couple without children. That extra income is considered the cost of children.
While there are many advantages to using this method, a major drawback is that it doesn’t give you an estimate for how much a family needs to spend, rather how much they do spend. Families may well spend more than what they strictly need to.
So, how much do families spend on children?
We estimate families spend about 13 per cent of their disposable income on the first child and a further ten percentage points for each child after that.
For a working-age couple earning the typical after-tax income (around $130,000 per year), that equates to about $17,000 per year for the first child and around $13,000 per year for each subsequent child.
That means to raise the eldest child to adulthood, the couple would spend about $300,000 over 18 years in today’s dollars. Subsequent children would be about $230,000 each.
Lower income families spend a higher share of their income on children, at around 17 per cent for the first child and 13 per cent for subsequent children. But these households spend a lower absolute amount on children.
Does age of the child change the cost? There is uncertainty around this, but our latest research indicates younger children and older children are moderately more expensive than middle aged (six to 12) children.
This finding contrasts with previous research and conventional wisdom that older children are the most expensive.
These estimates are not set in stone. There are different ways to estimate such numbers and they can differ depending on what definitions you adopt and methods you use to analyse the data.
Ok, do kids cost more now?
The HILDA dataset has been gathered over many years, so we can compare the cost of children through time, albeit not perfectly.
Single year samples are relatively small and subject to error, but that analysis suggests not a lot has changed with the cost of children since 2001.
Our research doesn’t provide clues as to why fertility rates in Australia have dropped (as they have in most developed nations). Other data such as Australian Bureau of Statistics income survey and financial stress data suggest real incomes for couples with children have increased over the longer term (although not by much, if at all, in recent years).
The lack of evidence here likely points to other factors driving lower fertility rates. Families may be delaying having children to focus on other pursuits, such as employment or education. It’s also more acceptable for couples, and women in particular, to choose to not have children.
Another possible reason is people could be being deterred by the perception of higher costs, instead of the actual cost. Or perhaps people simply want to spend their money elsewhere.
Calculating the cost of children is complex and imprecise, but it’s fair to say the evidence doesn’t show that the direct cost of kids is getting more expensive over time. Younger generations not having kids, or fewer kids, is likely related to many factors, but we can’t draw affordability down generational lines.
Ben Phillips is an associate professor at POLIS@ANU Centre for social policy research at Australian National University. Phillips through his role at the ANU provides consulting services on a range of areas in economic and social policy and has recently published work on a consulting basis for the Economic Inclusion Advisory Committee on the cost of children.
