Maryland uses the Income Shares model — both parents’ adjusted gross incomes are combined. Updated for 2026 — covers 50/50 custody, arrears, modifications and Maryland child support laws.
BothParents Income
NoneIncome Cap
18Age Support Ends
10%Arrears Interest
🦀 Maryland Income Shares Model
Maryland Child Support Calculator 2026
Maryland uses the Income Shares model — both parents’ adjusted gross incomes are combined.
ℹMaryland uses adjusted gross income — Gross = total income before any deductions.
$
$0$20k
$
$0$20k
$
$
Estimated Monthly Child Support
$0
per month
Annual Total
$0
Combined Income
—
Until Age
18
* Estimate using official Maryland income shares formula. Courts may deviate based on special circumstances. Consult a Maryland family law attorney for your specific situation.
🦀 How Maryland Calculates Child Support
ModelIncome Shares — both parents’ combined adjusted gross income
Income CapNo set cap — courts use discretion
Minimum Order$50/month minimum regardless of income
Arrears Interest10% annual interest on unpaid arrears
Maryland Key RuleMaryland uses adjusted actual income — with specific allowable deductions
Additional InfoMaryland courts use published Child Support Schedule tables updated by statute
⚖ 50/50 Custody in Maryland
Does Child Support Apply With 50/50 Custody in Maryland?
In most cases, yes. Maryland does not automatically eliminate child support with equal parenting time.
✓General rule: With 50/50 custody, the higher-earning parent typically pays the lower-earning parent. The amount is reduced vs sole custody but rarely reaches $0.
$
$0$15k
$
$0$15k
Estimated Monthly Payment
$0
per month
Without Custody Adj.
$0
Custody Reduction
$0
Net Payment
$0
* 50/50 custody calculations are complex. This is an approximation. Consult a Maryland family law attorney for exact figures.
📋 Maryland Arrears Calculator
Maryland Child Support Arrears Calculator
Calculate total back child support including 10% annual interest Maryland applies to unpaid arrears.
⚠Maryland charges 10% annual interest on all unpaid child support arrears.
$
$
$
Total Arrears Owed (with 10% Interest)
$0
including Maryland 10% annual interest
Base Arrears
$0
Interest Accrued
$0
Clear in 1 Year
$0
Clear in 2 Years
$0
Clear in 3 Years
$0
Support Ends Age
18
* Maryland applies 10% annual interest to unpaid child support. There is generally no statute of limitations on child support debt.
🔄 Modification Estimator
Maryland Child Support Modification
Estimate your new payment and check if you qualify for a modification in Maryland.
ℹModification rule: Most states allow modification when the new amount differs by 15-20% or $100/month, OR when there is a material and substantial change in circumstances (job loss, new child, custody change).
$
36+ months = eligible for routine review
$
Estimated New Monthly Payment
$0
per month
Current Order
$0
New Calculated
$0
Difference
$0
% Change
0%
Likely Qualifies?
—
Time Since Order
—
* Qualification estimate only. Consult a Maryland family law attorney before filing.
📜 Updated 2026
Maryland Child Support Laws 2026
Key rules, age cutoffs and what you need to know in Maryland.
FORMULA How Maryland Calculates Child Support
Maryland Code Family Law Section 12-204 governs child support. Maryland uses Income Shares with combined adjusted actual income. Published Schedule of Basic Child Support Obligations tables are used.
AGE When Does Child Support End in Maryland?
Child support in Maryland ends when the child turns 18 — Support ends at 18 or high school graduation. Support also ends upon the child’s death, marriage or emancipation. Important: In most cases support does not stop automatically — you need a court order. Stopping payments without a court order creates arrears even after the child reaches the cutoff age.
INTEREST Arrears Interest in Maryland
Maryland charges 10% annual interest on unpaid child support arrears. Maryland’s rate of 10% is among the higher rates in the country. There is generally no statute of limitations on child support debt.
ENFORCEMENT Maryland Child Support Enforcement
Maryland has broad enforcement powers including wage garnishment, tax refund interception, driver’s license suspension, professional license suspension, passport denial, and credit bureau reporting. Criminal charges may apply for significant or long-term non-payment.
MODIFY Modifying Child Support in Maryland
Child support can be modified in Maryland when there is a material and substantial change in circumstances — typically a significant income change, job loss, new children from another relationship, or change in custody. Most states also allow a periodic review every 3 years. File a petition with the court — private agreements to change support are not legally enforceable.
📅 Maryland Payment Calendar
Child Support Payment Calendar 2026
Generate your personal payment schedule and track payments month by month.
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Monthly Total
$0
Annual Total
$0
Next Payment
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Days Until Due
—
Payments Remaining
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Marked Paid
$0
* Click Mark as Paid to track payments. Always keep payment receipts.
Need a Maryland Family Law Attorney?
This calculator provides estimates. For filing, modifying or enforcing a child support order, connect with a local family law attorney.