Anthony Douglas, chief executive of Cafcass, the organisation that represents children in care cases, told the Independent he feared the number of cases could rise by up to 8%.
He added: "Given what we know about the association between poverty deprivation and care, the increase in economic difficulties can take away the margins of support for people who are just managing to keep things together.
"Often quite small amounts of support can make all the difference. So I think that there is a risk of underestimating the way in which this support can keep some families going."
More top news
Rain across much of the remainder of the country
Singer knocks Oasis from their 18-year hold on the top spot as her third album sells more than 800,000 copies in its first week of release
Francois Hollande has urged British MPs to support David Cameron's plan to launch airstrikes against so-called Islamic State in Syria.