In the analysis that follows, I use data from the Provider Cost of Quality Calculator (PCQC) to examine the impact that this limit on group size can have on child care providers in Minnesota. The findings suggest that child care centers face a substantial reduction in revenue as a result of the 10-person group limit: a hypothetical classroom of toddlers could lose about $2,600 in net income per month and a preschool classroom about $4,800 per month. The findings also suggest that the 10-person group limit can have an impact on home-based family child care providers if they typically serve more than nine children. (author abstract)