Calculate Child Support
Before taxes. Include wages, self-employment, bonuses.
Michigan uses the Income Shares — both incomes required.
0 = no custody · 91 = 25% · 182 = 50/50 · 365 = full custody
$0
estimated monthly support payment
⚠️ Estimate only. Actual court-ordered amounts may vary. Verify with a licensed Michigan family law attorney.
ℹ️ Michigan uses the Income Shares — Michigan uses Income Shares. Support may extend to 19.5 if in secondary school.
How Child Support Works in Michigan
Michigan uses the Income Shares to determine child support obligations.
The Income Shares model combines both parents' incomes, finds the basic support obligation from a state schedule, then divides it proportionally. More parenting time (overnights) reduces the non-custodial parent's payment through a parenting time credit.
How Michigan Compares to Other States
See how Michigan's child support rules compare to other states.
| State | Formula | Support Ends | Arrears Rate | Mod. Threshold |
|---|---|---|---|---|
| ★ Michigan (you) | Income Shares | 18 | 5% | 10% |
| Delaware | Melson Formula | 18 | 5% | 10% |
| Idaho | Percentage of Income | 18 | 5% | 15% |
| Ohio | Income Shares | 18 | 5% | 10% |
| Alaska | Percentage of Income | 18 | 6% | 15% |
| Florida | Income Shares | 18 | 6% | 15% |
| Louisiana | Income Shares | 18 | 6% | 25% |
| New Hampshire | Income Shares | 18 | 6% | 15% |
| North Dakota | Income Shares | 18 | 6% | 10% |
Showing 8 comparison states. View all 50 states →
Frequently Asked Questions
How is child support calculated in Michigan?
Michigan uses the Income Shares model. Michigan uses Income Shares. Support may extend to 19.5 if in secondary school.
When does child support end in Michigan?
Child support generally ends when the child turns 18 in Michigan.
Can I modify child support in Michigan?
Yes. Michigan requires a 10% or greater change in income to qualify. Use our modification checker →
Does 50/50 custody eliminate child support in Michigan?
Not automatically. The higher-earning parent typically still pays support with 50/50 custody. See our 50/50 guide →
What income is used for child support in Michigan?
Income includes wages, self-employment, bonuses, rental income, unemployment benefits, disability payments, and Social Security. Courts may impute income if a parent is voluntarily underemployed.