The staff-to-child ratio (beroepskracht-kindratio/BKR) determines how many children one childcare professional can be responsible for at any given time. As a parent, you want to know whether your child is getting enough attention — and that's exactly what this article is about. We explain what the rules are, why they exist, and how you can check whether a childcare provider is following them.
What Is the BKR in Childcare and Why Does It Exist?
The staff-to-child ratio (beroepskracht-kindratio/BKR) is a legally established standard that specifies how many children one childcare professional may supervise at the same time. This standard is set out in the Childcare Act (Wet kinderopvang) and is checked annually by the Municipal Health Service (GGD). It's not an arbitrary number: the BKR is based on research into what children need in order to feel safe, seen, and stimulated.
A childcare professional responsible for too many children at once simply doesn't have the time or attention to give each child what they deserve. Picture a crying baby who needs comforting while two toddlers are fighting over a toy car. The BKR ensures that situations like these remain manageable and that the safety and quality of care are guaranteed. For you as a parent, it's one of the most important quality indicators to look for when choosing childcare — and it's backed by law.
Why Group Size Directly Affects Your Child's Development
Smaller groups and a favourable ratio mean more eye contact, more conversation, and more individual attention. This is especially crucial in the early years of life: children develop language, social skills, and emotional regulation largely through interaction with adults. Research consistently shows that children in groups with a good staff-to-child ratio perform better in terms of language development and overall wellbeing. So it's not just a matter of safety — it directly affects your child's development.
What Are the Legal BKR Standards by Age in 2026?
The standards vary by age group, as younger children require more direct supervision. The younger the child, the lower the number of children permitted per childcare professional.
BKR at the Daycare Centre: From Baby to Toddler
At the daycare center (kinderdagverblijf/KDV), the following legal ratios apply for same-age groups:
- 0 to 1 year: 1 staff member for a maximum of 3 children
- 1 to 2 years: 1 staff member for a maximum of 5 children
- 2 to 4 years: 1 staff member for a maximum of 8 children
For mixed-age groups, where children of different ages are together, the BKR is calculated based on the composition of the group. During a tour, feel free to ask how the group is made up and how many staff members are present on a typical day. This gives you a more realistic picture than the figures on paper alone.
BKR in After-School Care: Ages 4 to 12
- 4 to 6 years: 1 staff member for a maximum of 10 children
- 7 and older: 1 staff member for a maximum of 12 children
After-school care (BSO) operates with a more relaxed ratio. Children in after-school care are older and more independent, which justifies this higher ratio. That said, the ratio alone doesn't tell the whole story: a group of 10 children in a large space with lots of activities requires different supervision than a quiet group of 6. When visiting an after-school care setting, pay attention to how the space is organised, how many children are present at the same time, and whether there are enough staff members to provide individual attention as well.
Can a Childcare Provider Temporarily Deviate from the BKR?
Yes, but only under strict conditions. The law allows a daycare center or after-school care setting to deviate from the BKR for a maximum of 3 hours per day, provided this is documented in writing in their policy and parents have been informed. This is known as a structural deviation. Think of situations where fewer children are present during quieter afternoon hours or at the end of the day, and staffing is adjusted accordingly.
There is also the possibility of an incidental deviation — for example, in the event of unexpected staff absence. Rules apply here too: the childcare provider must demonstrate that they made every effort to arrange cover. The Municipal Health Service (GGD) checks whether providers handle this responsibly.
What Can You Look Out for as a Parent?
You can also check the BKR yourself. The Dutch government website offers a calculation tool that lets you verify how many staff members must be present at minimum for a given group composition. This is handy if you want to check whether what you observed during a tour matches the legal requirements. You can also ask the provider directly: how many children are in my child's group, and how many staff members are present? A good childcare provider will answer that question without hesitation.
It's also worth checking the GGD inspection reports to see whether the BKR has previously been flagged as a concern. On Kiddie.nl, you'll find a summary of recent inspection reports for each location, as well as the full reports. These show whether the provider meets all legal requirements, including the BKR.
Additional Legal Requirements for Staff
The BKR tells you about the number of supervisors, but not about their qualifications. Separate requirements apply for that. Every childcare professional must be registered in the Childcare Personnel Register (Personenregister Kinderopvang), which is part of the National Childcare Register (Landelijk Register Kinderopvang/LRK). This register shows whether a person has completed the required training and whether a valid Certificate of Good Conduct (Verklaring Omtrent het Gedrag/VOG) has been issued. Parents and supervisory bodies can use this platform to verify that everything is being done by the book. The Municipal Health Service (GGD) checks during every inspection whether registrations are up to date and whether no staff members are working without valid documentation.
