In Australia, we have (had) the "baby bonus". Seems a bit wrong. I'd rather support sticks to things like childcare subsidies and so on. I have two children in childcare 3 days a week and it would cost me over AU$600/wk without the subsidies.

Obviously there has to be a strong balance between an incentive that keeps a reasonable birthrate and one that overly encourages those desperate for money to procreate. The latter is disastrous for countless reasons.

Not sure how they'd balance it with a UBI.