I'd like to recommend that the PSL Tax calculator incorporate additional age-based parameters for the young child bonus to the child tax credit. This would be an incredibly valuable policy parameter for family-policy.
Countries throughout the world use different young child bonus varying age-thresholds for their child benefits delivered (ranges between 1 and 6). Even in the United States, we've seen proposals for varying years (5 or 6 is most common). Crucially, allowing for the CTC bonus to be restricted down to age 1 allows for the calculation of "baby bonuses".