Income Shares
U.S. Territory
Updated 2025-10-01

Northern Mariana Islands Child Support Calculator & Complete Guide

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Northern Mariana Islands at a glance

Northern Mariana Islands follow income-shares principles via CNMI Child Support Enforcement.

Income Shares
v1.0.0
Reviewed 2025-10-01

Northern Mariana Islands follow income-shares principles via CNMI Child Support Enforcement.

Source: Federal Office of Child Support Services overview

How this jurisdiction calculates support
Income Shares

This jurisdiction combines both parents' incomes to estimate what would have been spent on the children, then divides that obligation proportionally.

Shared custody rules

Shared-time credit begins at 92 overnights/year using the cross-credit method. Adjusted obligation cannot fall below 25% of base.

Income considerations
Wages & salary · Self-employment net · Bonuses

Schedule applies up to $30,000/mo combined. Income may be imputed when underemployment is found.

Healthcare & childcare

Health insurance premiums, work-related childcare, and uninsured medical are added on top of basic support and split by income share.

Low-income protections

Self-support reserve of $1,400/mo is preserved before support is calculated. Statutory minimum order: $50/mo.

Modification & duration

Modifications generally require a 15% change in circumstances and may be reviewed every 3 years. Support continues to age 18.

Enforcement

CNMI Office of the Attorney General — Child Support Enforcement Division.

Important notes

Courts may deviate from guideline amounts when fairness requires. Imputed income may apply if a parent is voluntarily underemployed.

Estimates only. CNMI courts have broad discretion to deviate from the schedule.

How Northern Mariana Islands calculates child support

This jurisdiction combines both parents' incomes to estimate what would have been spent on the children, then divides that obligation proportionally.

Significant overnights with the paying parent reduce the calculated transfer because direct care offsets cash support.

Childcare, health insurance, and uninsured medical costs are added on top of basic support and shared in proportion to income.

Clear information helps reduce uncertainty. Take it one step at a time.

Modification in Northern Mariana Islands

Northern Mariana Islands generally requires a ~15% change in circumstances to modify a support order. Reviews are typically available every 3 years, or sooner with a substantial change in income or custody.

Read the Northern Mariana Islands modification guide

Shared custody & parenting time

Shared-time credit begins at ~92 overnights/year, using the cross-credit method. The adjusted obligation generally cannot fall below 25% of base.

Open the Northern Mariana Islands shared custody guide

Frequently asked questions

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