Ireland does not have a fixed formula or calculator for child maintenance[. Instead, the amount is determined by comparing both parents' income and expenses, with a judge deciding what's fair based on the child's financial needs.

Key Points:

Typical amounts:

- Average payments range from **€40 to €75 per child per week
- District Court maximum: **€150 per week per child
- Circuit/High Courts: **No limit** on maintenance amounts

Factors considered:

- Both parents' income and expenses
- The child's specific needs (children with disabilities or special care needs may require higher payments)
- Any maintenance responsibilities toward other children or former partners

Duration:

- Until age 18, or up to age 23 if the child is in full-time education
- Indefinitely if the child has a mental or physical disability preventing self-maintenance

How to Arrange Maintenance:

1. Informal agreement

- Can be written but isn't legally binding unless made a Rule of Court

2. Mediation

- Available through local district courts in Dublin (Dolphin House), Naas, Nenagh, and Clonmel

3. Court application

- Apply to the District Court for a maintenance order if agreement can't be reached

You may find it helpful information and all child-related expenses to support your case.
https://www.treoir.ie/information/child-maintenance-information