Similar in Germany. Those with kids pay less for certain insurances (long term disabled healthcare, iirc) because there is an obligation for children to help parents in such situations. And parents get a small amount of direct financial support for every child. For some families, it's an absolute lifeline, but it can help pay the rent for a bigger apartment. Some jobs (usually public service) also pay extra for children.
Does it encourage self declared bachelors/bachelorettes-for-life to have kids? No.
Does it help those who have or want kids to afford it? Yes.
Does it subsequently help society? Yes, along with free/cheap childcare, medical services, and decent compulsory education.