Child Support for Large Families in New York: The CSSA With 4, 5, or More Children

Most child support explainers stop at one or two children. But in the communities we serve — Brooklyn, Monsey, Kiryas Joel, and throughout the Hudson Valley — families with four, five, or eight children are the norm, and the Child Support Standards Act (CSSA) works differently at that scale. The percentages top out, the income cap does more work, add-ons like tuition can exceed basic support, and questions about imputed income arise constantly. Here is how New York calculates child support for large families in 2026, with the numbers courts are actually using.

The CSSA Percentages — and Where They Stop Climbing

Under Domestic Relations Law § 240(1-b) and Family Court Act § 413, New York's basic child support obligation applies a fixed percentage to the parents' combined income (after certain deductions, principally FICA), then allocates it between the parents pro rata by income:

• 1 child: 17%
• 2 children: 25%
• 3 children: 29%
• 4 children: 31%
• 5 or more children: no less than 35%

Note two things about the top bracket. First, the statute says "no less than" 35% — for five or more children, 35% is the floor, not a ceiling, and a court has room to go higher in an appropriate case. Second, the marginal increase per child flattens: the jump from four children to eight does not double the percentage. For very large families, the real financial action is usually in the add-ons, the cap, and imputation — the topics below.

The 2026 Income Cap: $193,000

The percentages apply mandatorily to combined parental income up to the statutory cap, which rose to $193,000 on March 1, 2026 (it adjusts every two years; the next change comes in 2028). Above the cap, the court has discretion: it may apply the percentage to some or all of the excess income, apply the statutory factors instead, or both — and under the Court of Appeals' decision in Cassano v. Cassano, 85 N.Y.2d 649 (1995), it must articulate its reasons on the record. For a five-child family, whether the 35% rate reaches income above $193,000 is often the single largest number in dispute. Our guide to high-income child support above the cap covers the case law in depth.

A Worked Example

Suppose combined parental income (after FICA deductions) is $120,000 — $72,000 earned by the father and $48,000 by the mother — with five children living with the mother. The basic obligation is 35% of $120,000, or $42,000 per year. The father's pro rata share is 60% (his share of combined income), so his basic support obligation is $25,200 per year — $2,100 per month — before add-ons. This is a simplified illustration; deductions, the self-support reserve, and add-ons all adjust the real number. Run your own figures on our New York support calculator.

Add-Ons: Where Large-Family Cases Are Really Fought

• Child care. Reasonable child care expenses incurred so the custodial parent can work (or attend school leading to work) are divided pro rata on top of basic support.
• Health insurance and unreimbursed medical. Premium costs for the children and unreimbursed medical expenses are likewise allocated pro rata. With many children, these numbers are substantial.
• Educational expenses — including yeshiva tuition. The statute gives the court discretion to direct payment of a child's educational expenses "as justice requires," considering the circumstances of the case and the parties' resources. For families whose children have always attended yeshiva or day school, courts regularly treat continued religious education as part of the children's established lifestyle — and with five or more tuitions, this add-on can exceed basic support itself. Tuition obligations should be negotiated explicitly in any settlement: which schools, what happens if tuition rises, how scholarships apply, and when the obligation ends.

Imputed Income: Earning Capacity, Cash, and Community Support

Support is calculated on what a parent can earn, not only on what a tax return shows. Courts may impute income based on earning capacity and work history, on resources that do not appear in reported income, and — significantly for our clients — the statute expressly permits attributing income based on money, goods, or services provided by relatives and friends. That matters in kollel arrangements, family-supported households, and cash-heavy businesses alike. A parent who is voluntarily underemployed relative to their capacity, or whose lifestyle is visibly funded beyond reported income, should expect the court to look past the paperwork. These cases are won with evidence: forensic review of accounts, lifestyle analysis, and careful examination at trial.

The Self-Support Reserve and Low-Income Payors

At the other end of the spectrum, the CSSA protects a payor's basic subsistence: where the calculated obligation would drop the payor's income below the self-support reserve ($21,546 in 2026), the order is adjusted, and very low-income payors may pay reduced statutory amounts. In large families with modest incomes, the tension between the 35% floor and the reserve is real, and the details of the calculation matter enormously.

Deviations, Agreements, and Opt-Outs

Parents may agree to support terms that differ from the CSSA — many settlements do, particularly around tuition — but only with a valid opt-out: the agreement must recite what the CSSA amount would have been and the reasons for any deviation. A defective recital can render the support provisions unenforceable. This is technical drafting, and it is exactly the kind of provision we build carefully into uncontested divorce stipulations and separation agreements.

Frequently Asked Questions

Is there a maximum child support amount in New York?

No fixed maximum. The percentages are mandatory up to $193,000 of combined income (2026), and above that the court has discretion guided by the statutory factors and Cassano. In high-income, many-children cases, awards can be substantial.

Does support automatically drop as each child turns 21?

Not automatically pro rata. Child support in New York runs until age 21 (longer by agreement, or in certain circumstances for adult dependent children with disabilities), but when an older child ages out, the order does not simply fall by that child's "share" — recalculation or a modification proceeding is generally required, and well-drafted agreements build in the mechanics.

Can a court really order yeshiva tuition on top of 35%?

Yes, in its discretion — especially where religious schooling is the children's established norm and the parents have historically paid it. Whether and how much is heavily fact-dependent, which is why tuition should be addressed head-on in settlement rather than left to chance.

My spouse learns full-time and family supports the household. What income counts?

The court can impute income based on earning capacity and on support received from relatives and friends. The outcome depends on the record — documented history of support, capacity to earn, and the household's actual economy.