How is child support calculated in Maryland?

Using the Income Shares Model under Family Law § 12-204: the formula starts with each parent's adjusted income, looks up a base obligation on a statutory schedule, then adds costs for health insurance, childcare, and medical expenses, splitting the total based on both parents' relative incomes.

Is there an income threshold for the guidelines to apply?

Yes. Effective July 1, 2022, the guidelines apply where the parents' combined adjusted actual income is $30,000 per month or less ($360,000 per year). Above that, the court doesn't have to use the guidelines formula and can instead set support based on the children's needs.

What if a parent is deliberately earning less to reduce support?

Maryland courts can find a parent 'voluntarily impoverished' and calculate support based on what that parent could reasonably earn, rather than their actual, artificially reduced income.

How do I request a modification in Maryland?

Either parent may ask the Office of Child Support Enforcement to review the order for possible modification once every three years, and modification is also available based on a material change in circumstances, like a job loss, a significant income change, or a change in a child's needs.

How is child support enforced in Maryland?

Income withholding is the most prevalent method, automatically deducting support from a paycheck before the parent receives it, with employers required to remit payments to the state disbursement unit. Federal law caps withholding at 50-65% of disposable income depending on other support obligations. Enforcement can also include contempt, judgments, tax refund interception, and freezing bank accounts.

Maryland, United States

Maryland Child Support: A Parent's Guide

How child support works in Maryland, in plain English: the income shares guidelines, the 3-year review, and enforcement.

Legal sources reviewed: August 10, 2026

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In short: Maryland uses the Income Shares Model for combined incomes up to $30,000/month ($360,000/year), above which courts have discretion rather than a mandatory formula. A parent can request review once every three years without needing to prove anything, and Maryland courts can impute income to a parent found voluntarily impoverished.

This is an educational overview written for parents, not lawyers. It isn't legal advice. For anything beyond general understanding, talk to a licensed Maryland family law attorney.

What Maryland generally provides

Under Family Law § 12-204, Maryland's Income Shares Model starts with each parent's adjusted income, looks up a base obligation from a statutory schedule, then adds costs for health insurance, childcare, and medical expenses, splitting the resulting total based on the parents' relative income shares.

Important terminology

Adjusted income: the base figure for each parent's calculation under the schedule.
Voluntary impoverishment: a court finding that a parent is deliberately earning less than they could, allowing the court to calculate support based on earning potential instead of actual reported income.
$30,000/month income threshold: the ceiling above which the guidelines formula isn't mandatory, effective July 1, 2022.

How the calculation works

Combining adjusted income and add-on costs

Each parent's adjusted income feeds into the statutory schedule for a base obligation, and health insurance, childcare, and medical expenses are added on top before the total is split based on each parent's relative income.

Where the formula stops being mandatory

Effective July 1, 2022, the guidelines apply automatically only where the parents' combined adjusted actual income is $30,000/month or less ($360,000/year). Above that threshold, the court doesn't have to use the guidelines formula and can instead set support based directly on the needs of the children.

Addressing underemployment

Maryland courts can find a parent voluntarily impoverished, deliberately earning less than they're capable of, and calculate support based on that parent's reasonable earning potential rather than their actual, lower reported income.

Requesting or defending a modification

Either parent may ask the Office of Child Support Enforcement to review the order for a possible modification once every three years, without needing to show a specific change. Modification is also available based on a material change in circumstances, such as a job loss, a significant income change, or a shift in a child's needs. See the child support calculator and guideline finder for jurisdiction-specific calculation sources and guidance.

How enforcement works

Income withholding is Maryland's most prevalent and effective enforcement method, automatically deducting support from the paying parent's paycheck before they receive it, with employers required to remit payments to the state disbursement unit. Federal law limits withholding to 50–65% of disposable income, depending on whether the parent supports other children. Beyond withholding, enforcement options include contempt, judgments, interception of tax refunds, and the ability to freeze and seize funds from bank, investment, and other financial accounts.

Common questions

Does the guideline formula apply to high earners? Not automatically above $30,000/month combined income, the court gains discretion to set support based on the children's actual needs rather than mechanically applying the schedule.

Can my co-parent avoid paying more by working less? Not necessarily, if a court finds them voluntarily impoverished, it can calculate support based on what they're capable of earning rather than their reduced actual income.

What if my co-parent isn't paying? Contact your local Child Support Enforcement Administration office or the Maryland Department of Human Services' Child Support Services division.

Practical considerations

Because Maryland guarantees a review every three years with no need to show a change, mark that date and use it proactively, and if you suspect voluntary impoverishment on the other side, gather documentation of their actual earning capacity to raise with the court or Child Support Enforcement. For the custody rules underlying this calculation, see the Maryland custody guide.

Official Maryland resources

FAQ

Questions, answered

This information is provided for educational purposes only and is not legal advice. Family law varies by individual circumstances and may change over time. Consult a qualified attorney or appropriate official resource for advice about your situation.