Compare all 50 states

Income shares (gross income) Official worksheet ↗Only at court-ordered 50/50 19 (age of majority) No, only by agreement 7.5%, added automatically None $5 or $25 (by income) $35, receiving parent 6 months behind Every 3 yrs; 10% change No Way2Go Mastercard
Percent of payer's net income Official calculator ↗Starts at 110 overnights 18; 19 in high school No, only by agreement 6%, added automatically $50/mo Free $35, receiving parent 4 months behind (and $1,000) Every 3 yrs; 15% change No None listed
Income shares (gross income) Official calculator ↗Starts at 20 days 18; 19 in high school No, only by agreement 10%, added automatically None Free $35, receiving parent 6 months behind Every 3 yrs; 15% change No Way2Go Mastercard
Income shares (gross income) Official calculator ↗Starts at 141 overnights 18; 19 in high school No, only by agreement 10% only after a judgment None $25 $35, paid by the state 3 months behind Every 3 yrs; 20% income change Yes, both parents U.S. Bank ReliaCard
Income shares (net income) Official calculator ↗Every overnight counts 18; 19 in high school No, only by agreement 10%, added automatically $100/mo (1 child); $200 (2+) Free $35, receiving parent 1 month behind Every 3 yrs; 20% or $50 No Way2Go Mastercard
Income shares (gross income) Official calculator ↗Every overnight counts 19; 21 in high school No, only by agreement 10% in law, not automatic All current support Free $35, receiving parent No minimum debt Every 3 yrs; 10% change No smiONE Visa
Income shares (net income) Official worksheet ↗Judge's discretion only 18; 19 in high school Yes, to 23, capped None $50/mo Free $35, receiving parent 3 months behind Every 3 yrs; 15% change No smiONE Visa
Melson formula Official calculator ↗Starts at 80 overnights 18; 19 in high school No, only by agreement None $50/mo $25 $35, receiving parent $1,000 and 30 days behind After 2.5 yrs; 10% if sooner No U.S. Bank ReliaCard
Income shares (net income) Official worksheet ↗Starts at 73 overnights 18; 19 in high school No, only by agreement 7.87% on support judgments None Free $35, paid by the state 15 days behind Every 3 yrs; 15% change Yes, custodial parent smiONE Visa Prepaid Card
Income shares (gross income) Official calculator ↗Every day counts 18; 20 in high school No, only by agreement 7%, added on DCSS orders Gap payment only $25 $35, paying parent 3 months behind Every 3 yrs; 15% change No Way2Go Debit Mastercard
Melson formula Official worksheet ↗Starts at 144 overnights 18, or end of high school Yes, to age 23 None None Free $35, receiving parent 3 months behind Every 3 yrs; 10% change No U.S. Bank ReliaCard
Income shares (gross income) Official worksheet ↗Starts at 92 overnights 18; 19 in high school No, only by agreement 8.875% on court judgments None $25 $35, paying parent 90 days or $2,000 behind Every 3 yrs; 15% change Yes, custodial parent Family Support Card (ReliaCard)
Income shares (net income) Official calculator ↗Starts at 146 overnights 18; 19 in high school Yes, usually to 23 9% in law, not added All support passed through Free $35, paid by the state 90 days behind Every 3 yrs; 20% change No Way2Go Card
Income shares (gross income) Official calculator ↗Starts at 52 overnights 19; later in high school Yes, if filed before 19 Up to 18% if a court orders it None Free $55, paying parent 3 months or $2,000 behind Every 3 yrs; 20% change No Way2Go Mastercard
Income shares (net income) Official calculator ↗Starts at 128 overnights 18; 19 in high school No 10% in law, not automatic None Free $35, receiving parent 3 months behind Every 2 yrs; 10% change No U.S. Bank ReliaCard
Income shares (gross income) Official worksheet ↗Starts at 128 overnights 18; up to 19 in high school No 7.75% if a court orders it None Free $35, paid by state 3 months behind Every 3 yrs; 10% change Yes, custodial parent U.S. Bank ReliaCard
Income shares (gross income) Official calculator ↗Starts at 88 days 18; 19 in high school No 12% on court judgments None Free $35, receiving parent 6 months behind Every 3 yrs; 15% change Paying parents only Way2Go Mastercard
Income shares (gross income) Official calculator ↗Starts at 74 days 18; 19 in high school No 7.5% in law, not added None $25 $35, receiving parent 3 months behind Every 3 yrs; 25% change No U.S. Bank ReliaCard
Income shares (gross income) Official calculator ↗Equal care only 18; 19 in high school No 6% allowed, not charged $50/mo per family Free $35, receiving parent 2 months behind Every 3 yrs; 15% change No U.S. Bank ReliaCard
Income shares (gross income) Official calculator ↗Starts at 92 overnights 18; 19 in high school No None $100 (1 child); $200 (2+) $15 $15, receiving parent 4 months behind Every 3 yrs; no % test No Way2Go Mastercard
Income shares (gross income) Official calculator ↗Equal time only 18; to 21 or 23 if dependent Yes, to age 23 6% plus 6% penalty, automatic $50/mo per family Free $35, paid by the state No fixed threshold Every 3 yrs; no % test No U.S. Bank ReliaCard
Income shares (net income) Official calculator ↗Every overnight counts 18; 19.5 in high school No, only by agreement 4.96% surcharge if court orders All current support Free $35, paid by the state More than 2 months behind Every 3 yrs; 10% or $50 No Way2Go Prepaid Mastercard
Income shares (gross income) Official calculator ↗Every overnight counts 18; 20 in high school No, only by agreement None since Aug. 2022 All current basic support Free (2% cost recovery fee) $35, receiving parent 3 months behind On request; 20% and $75 No U.S. Bank ReliaCard
% of payer's adjusted income Official guidelines ↗Only at equal time 21 Yes, to age 21 8% if a court orders it Up to $100/mo $25 $35, receiving parent 1 month behind Every 3 yrs; 25% change Yes, both parents Way2Go Debit Card
Income shares (gross income) Official worksheet ↗Starts at 36 overnights 18; 21 in school Yes, to age 21 12% in law, not added by FSD None Free $35, split between parents 3 months or $2,500 Every 3 yrs; 20% change No smiONE Prepaid Card
Melson formula Official worksheet ↗Starts above 110 days 18; 19 in high school No, only by agreement 9.75% in law, rarely charged Up to $100/mo $25 $35, paid by the state 6 months behind Every 3 yrs; 15% change No U.S. Bank ReliaCard
Income shares (net income) Official worksheet ↗Starts above 142 days 19 No, only by agreement 6.441%, added automatically None until July 2027 Free $35, receiving parent More than 3 months behind Every 3 yrs; 10% and $25 Yes, both parents U.S. Bank ReliaCard
% of payer's gross income Official calculator ↗Starts at 146 overnights 18; 19 in high school No, only by agreement 8.75% if a court orders it None Free $35, receiving parent 2 months and over $1,000 Every 3 yrs; 20% income change No Way2Go Prepaid Mastercard
Income shares (net income) Official calculator ↗Over 35% of time (128 nights) 18; 19 in high school No, only by agreement 5.7% in law, not automatic None Free $35, receiving parent 2 months behind Every 3 yrs; no % test No Way2Go Card (Mastercard)
Income shares (net income) Official calculator ↗Every overnight; shared at 28% 19; up to 23 in school Yes 4.5% (2026), only at payoff $100/mo (1 child), $200 (2+) $6 one time $35, paid by the state 6 months behind Every 3 yrs; no % test No Way2Go Card
Income shares (gross income) Official calculator ↗Starts at 128 overnights (35%) 18; 19 in high school No, only by agreement 4%, added automatically $100/mo (1 child), $200 (2+) Free None to parents (state pays) 1 month behind Every 3 yrs; 20% change No Way2Go Mastercard
Income shares (% of combined) Official calculator ↗No adjustment; judge may deviate 21 Yes 9% if willful, by judgment $100/mo (1 child), $200 (2+) Free $35, receiving parent 4 months behind Every 3 yrs; 15% income change No Way2Go Mastercard
Income shares (gross income) Official calculator ↗Starts at 123 overnights 18; 20 in high school No, only by agreement None None $25 ($10 low income) $35, receiving parent 3 months behind Every 3 yrs; 15% change No smiONE NCKIDSCARD (Visa)
Paying parent's net income Official calculator ↗Starts above 100 overnights 18; 19 in high school No, only by agreement 10%, added automatically None Free $35, receiving parent 2 months or $2,000 behind Every 18 mos; 15% change No smiONE Visa
Income shares (gross income) Official calculator ↗Starts at 90 overnights 18; 19 in high school No, only by agreement 7% if a court orders it None $1 (county may waive) $35, from payer's 2% charge 3 months behind Every 3 yrs; 10% change No smiONE Visa
Income shares (gross) Official calculator ↗Starts at 121 overnights 18; 20 in high school No 2%, added automatically None Free $35, receiving parent No driver's license suspension Yearly on request; 20% change No Oklahoma MasterCard debit card
Income shares (gross) Official calculator ↗Every overnight counts 18; up to 21 in school Yes, to age 21 9% in law, not added $50 per child, max $200 $1 $35, receiving parent 3 months behind Every 3 yrs; 15% or $50 change No U.S. Bank ReliaCard Visa
Income shares (net) Official calculator ↗Starts at 146 overnights 18 or HS graduation, later No No interest rate $100/mo (1 child) Free $35, receiving parent 3 months behind Every 3 yrs; no set % No Way2Go Card
Income shares (gross) Official worksheet ↗Starts at 179 overnights 18; 19 in high school No 12%, added automatically $100/mo (1 child) $20 $35, state pays 3 months behind Every 3 yrs; 15% change No Kids Card (Money Network)
Income shares (gross) Official calculator ↗Starts at 110 overnights 18; 19 in high school Yes 10.75% if a court orders it None Free $35, receiving parent 2 months behind Every 3 yrs; no set % No South Carolina Way2Go Card
Income shares (net) Official calculator ↗Starts at 180 overnights 18; 19 in high school No 12% optional, not automatic None $5 $35, paid by the state $1,000 and 3 months behind After 3 yrs; no set % Yes, custodial parent Way2Go Card
Income shares (gross) Official calculator ↗Starts at 92 days 18; 19 in high school No Up to 6%; none in TDHS cases Gap payment only Free $35, receiving parent 3 months behind Every 2 yrs; 15% change No Way2Go Mastercard
Percent of payer's net income Official calculator ↗Judge's discretion 18 or high school graduation No 6%, added automatically $75/mo (any family size) Free $35, receiving parent 3 months behind Every 3 yrs; 20% or $100 No smiONE Visa (Texas Payment Card)
Income shares (gross) Official calculator ↗Starts at 111 overnights 18 or normal HS graduation Divorce cases only, to 21 None now; 6% from July 2027 None (starts July 2028) Free $35, receiving parent 2 months (60 days) unpaid Every 3 yrs; 10% change No Way2Go Card
Income shares (after-tax) Official calculator ↗Starts at 91 overnights 18 or end of high school No 6% surcharge, automatic $100/mo Free $35, paid by the state 3 months behind Every 3 yrs; 10% change No U.S. Bank ReliaCard
Income shares (gross) Official worksheet ↗Starts at 91 days 18; 19 in high school No 6%, added unless waived $100/mo; $200 for 2+ kids Free $35, receiving parent 3 months or $5,000 Every 3 yrs; 10% and $25 No Way2Go Mastercard
Income shares (net) Official calculator ↗Judge's discretion 18; 19 in high school Yes, up to age 23 12% only on a judgment $50/mo (1 child); $100 (2+) Free $35, receiving parent More than 6 months behind Every 3 yrs; 15% and $100 No DCS Card (U.S. Bank Visa)
Income shares (adjusted gross) Official worksheet ↗Starts at 128 overnights 18; up to 20 in school No 5%, added automatically $100/mo (1 child); $200 (2+) Free $35, paid by the state 6 months behind Every 3 yrs; 15% change No smiONE Visa
Percent of payer's gross income Official calculator ↗Starts at 92 overnights 18; 19 in high school No 6%, added automatically 75% of support collected Free $35 receiving; $65 paying 3 months behind Every 3 yrs; $50/mo change No Way2Go Mastercard
Income shares (net) Official calculator ↗Starts at 92 overnights 18; up to 20 in high school No None; 10% late penalty $100/mo (1 child); $200 (2+) Free $35, receiving parent $2,500 and 90 days unpaid Every 3 yrs; 20% change No Way2Go Card

How do states calculate child support?

Every state uses a formula, called a guideline, and courts must follow it unless they explain why not. Most states use income shares: both parents’ incomes are added together, the state’s table says what parents with that combined income spend on children, and each parent owes their share. A few states take a percentage of the paying parent’s income instead, and three use the Melson formula, which first sets aside a basic living allowance for each parent.

Percentage of income 6
Alaska, Mississippi, Nevada, North Dakota, Texas, Wisconsin
Melson formula 3
Delaware, Hawaii, Montana
  • Income shares 41
  • Percentage of income 6
  • Melson formula 3

How does parenting time change child support?

In most states, the paying parent gets a lower amount once the children stay with them overnight often enough. Where that line sits matters: a parent with 100 overnights a year gets a reduction in some states and nothing in others. A few states count every overnight, so each extra night changes the amount a little. Equal time rarely means zero support when incomes differ.

Judge decides case by case 4
Connecticut, New York, Texas, Washington
  • Every overnight counts 7
  • Starts under 100 nights 15
  • Starts at 100 to 145 nights 15
  • Only near equal time (146+ nights) 9
  • Judge decides case by case 4

At what age does child support end in each state?

Child support usually ends at 18, but most states keep it going while a child finishes high school, and a few set the age at 19 or 21. Support for a disabled adult child can continue in most states. When current support ends, any past-due balance is still owed.

  • 18, or 19 if in high school 28
  • 18, but later in high school 15
  • 19 or 20 5
  • 21 2

Can a court make a parent pay for college?

In most states, child support for college happens only if parents agree to it. A minority of states let a judge order one or both parents to help with tuition and living costs after high school, usually with an age cap.

In limited cases 2
Connecticut, Utah
  • Yes, a court can order it 11
  • In limited cases 2
  • Only if parents agree 37

Do states charge interest on unpaid child support?

Past-due child support (arrears) can grow with interest, and some states’ rates float with market rates. A rate in state law does not always mean the agency adds it to your balance; in many states interest applies only if a court orders it. The map shows the rate in law; the table says whether your agency adds it automatically.

  • No interest 9
  • Under 6% 6
  • 6% to 9.9% 22
  • 10% or more 13

How much child support reaches families on TANF?

When a family receives TANF (cash assistance), the state usually keeps the child support it collects to repay the aid. Some states send part of it to the family each month, called a pass-through, and some send all of it. Many states also ignore that money when calculating the family’s benefit.

All current support 4
Colorado, Illinois, Michigan, Minnesota
  • None 24
  • Up to $50 a month 7
  • More than $50, or a share 15
  • All current support 4

Does it cost money to open a child support case?

Who pays the annual child support service fee?

Federal law requires a $35 yearly fee on cases where the family never received cash assistance and at least $550 was collected that year. States choose who pays it: the parent receiving support, the parent paying, or the state itself.

Parent paying support 4
Georgia, Idaho, Indiana, Ohio
Split between parents 1
Missouri
  • Parent receiving support 32
  • Parent paying support 4
  • Split between parents 1
  • The state 13

How far behind before a driver’s license can be suspended?

Nearly every state can suspend a driver’s license for unpaid child support, but the point where it starts varies. You get a notice first, with a short window to pay, set up a payment plan, or ask for a review. Many states also cover professional, hunting, and fishing licenses.

Any amount behind 2
Colorado, Massachusetts
No driver’s license suspension 1
Oklahoma
  • Any amount behind 2
  • Under 3 months behind 12
  • 3 months behind 25
  • More than 3 months behind 10
  • No driver’s license suspension 1

When can child support be changed?

You can ask for a review if income or custody changes. Agencies also review orders on a cycle, usually every three years. To change the amount, most states require that the new guideline amount differ from the current order by a set percentage. A review can raise or lower support, and nothing changes until a new order is issued.

  • 10% change or less 12
  • 11% to 15% 17
  • 16% to 25% 13
  • No set percentage 8

Does SNAP (food stamps) require a child support case?

TANF and Medicaid generally require parents to cooperate with child support, with exceptions for safety. SNAP does not, unless a state opts in. The states below that do can deny or reduce SNAP for a parent who does not cooperate.

  • Required 8
  • Not required 42

How do parents receive child support payments?

Most states pay support by direct deposit or a state prepaid debit card. Card brands differ in fees and apps, and the card website does not always show the same thing as your state child support account.

No card 1
Alaska
  • Way2Go card 23
  • smiONE card 9
  • ReliaCard 14
  • Other card 3
  • No card 1