Maryland Child Support Calculator
Income-shares schedule based on combined parental income and number of children; prorated by each parent’s share of income; adjusted by parenting time (as applicable) and add-ons (childcare/insurance/medical) per state rule.
Parents
Enter the names of both parents for the worksheet.
Children & Parenting Time
How many children and how is parenting time divided?
Drag the slider or type exact overnights. This determines which worksheet (A or B) is used.
Double-click slider to reset to 50/50
Worksheet Determination
Based on inputs: Worksheet B (Shared Custody)
92+ overnights for both parents triggers shared custody (Worksheet B)
Multi-Family Adjustment
If either parent has other children living with them who are not part of this case. (HB275, effective Oct 1, 2025)
Under Maryland's new Multi-Family Adjustment law, a parent may receive an income deduction if they have other biological or adopted children living in their home (92+ overnights/year) who are not subject to an existing support order.
Children living with this parent 92+ nights/year, not part of this case, and not under another support order
Children living with this parent 92+ nights/year, not part of this case, and not under another support order
No other children? Click Next.
Disclaimer
This calculator provides estimates only. It is not a substitute for legal advice. Court-ordered amounts may differ based on your specific circumstances.
How Maryland Calculates Support
What You'll Need
- Number Of Children On Order*
- Parent A Income*
- Parent B Income*
- Custody Type Or Worksheet Selection*
- Parenting Time Input*
- Other Child Support Or Dependents Adjustment
- Spousal Support Adjustment
- Work Related Childcare Costs
- Child Health Insurance And Uninsured Medical
* Required fields — optional items shown in gray