Child Support in Maryland: How It's Calculated
Maryland uses the Income Shares Model to determine child support obligations. This guide walks through how the formula works, what factors Maryland courts consider, and how to modify or enforce an order — with links to official Maryland resources.
Income Shares Model in Maryland
Maryland uses the Income Shares Model. Both parents' combined adjusted actual income is used to determine the basic child support obligation from the Maryland Child Support Schedule. The obligation is then apportioned based on each parent's share of combined income.
Maryland includes a shared physical custody adjustment when the child spends at least 35% of time (approximately 128 overnights) with each parent. Maryland uses 'adjusted actual income,' which is gross income minus alimony paid, certain pre-existing support obligations, and non-recurring income. Courts have discretion to deviate from guidelines with written findings.
Key Factors Maryland Courts Consider
- Both parents' adjusted actual monthly income
- Number of children
- Parenting time — 35% custody threshold for shared custody adjustment
- Child's health insurance costs
- Work-related childcare costs
- Extraordinary medical or educational expenses
- Existing alimony or support obligations
Official Maryland Resources
Get an accurate number from an official source
Child support calculations are complex and fact-specific. For an accurate figure, use Maryland's official worksheet or consult a licensed family law attorney. This guide explains the framework — it does not produce a binding calculation.
Step-by-Step: How Maryland's Formula Works
Here is how Maryland applies the Income Shares Model to calculate a child support obligation, step by step:
1. Determine each parent's income
Maryland starts by calculating each parent's income — gross income (before taxes). The specific definition of income is set by Income Shares Model.
2. Combine incomes and find the basic obligation
Both parents' incomes are combined and compared to Maryland's child support schedule. The schedule produces a basic child support obligation based on combined income and the number of children.
3. Add health insurance and childcare costs
Health insurance premiums paid for the child and work-related childcare expenses are added to the basic obligation before it is divided between parents.
4. Divide proportionally based on income share
The total obligation is allocated between the parents in proportion to each parent's share of combined income. The parent with the higher income share bears a larger portion of the obligation.
5. Apply parenting time credits
Parenting time — 35% custody threshold for shared custody adjustment shared physical custody adjustment when the child spends at least 35% of time (approximately 128 overnights) with each parent.
Document Everything for Your Maryland Case
Maryland courts rely on documented records — parenting time logs, expense receipts, and payment histories. ReplyCalmly helps you track all of it and generate organized, exportable reports.
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