How Nanny Shares Work: Splitting Costs, Contracts, and Hourly Rates

A nanny share allows two families to employ a single nanny to care for their children together, reducing each family's individual childcare expense by 25% to 35% compared to hiring a private nanny. At the same time, the caregiver earns 15% to 30% more than their typical solo hourly rate, making it an attractive arrangement for both parents and experienced childcare professionals.

Setting up a successful nanny share requires establishing clear hourly pay structures, handling legal household payroll across two distinct employers, and defining ground rules for host locations, illness, and vacations.

The standard two-thirds hourly rate formula

In domestic employment markets, the customary pricing benchmark for a nanny share is the two-thirds rule. Each participating family pays roughly two-thirds of the nanny's standard rate for a single child.

For example, if the prevailing market rate for a solo infant nanny is $24 per hour:

• Family A pays $16 per hour (two-thirds of $24).
• Family B pays $16 per hour (two-thirds of $24).
• The nanny earns a combined wage of $32 per hour.

For a 40-hour workweek across 52 weeks, each family pays $33,280 in gross annual wages, compared to $49,920 for a solo nanny at $24 per hour. That represents an annual savings of $16,640 per family. Meanwhile, the nanny earns $66,560 annually instead of $49,920.

In areas where infant center tuition averages $300 to $400 per week ($15,600 to $20,800 annually), a nanny share still costs more than center daycare for one child. However, parents gain customized in-home care and a small 2-to-1 child-to-caregiver ratio. You can examine regional center costs in our guide on the real cost of two kids in daycare.

Legal payroll and tax responsibilities

A common misconception is that one family can pay the nanny in full and have the second family reimburse them via peer-to-peer payment apps. Under federal labor law, both families are independent household employers and must establish separate Employer Identification Numbers (EINs) with the IRS.

Under Department of Labor Fair Labor Standards Act rules, the nanny is entitled to overtime pay (1.5 times the regular rate) for any hours worked over 40 in a workweek. Each family must withhold Social Security and Medicare taxes, pay employer payroll taxes (7.65%), and issue a separate Form W-2 at the end of the calendar year.

Payroll services designed for domestic employers automate this split by issuing two separate paystubs and tax filings based on each family's agreed share of the hours.

Managing hosting locations and equipment

Nanny shares operate under three common hosting structures:

• Single host home: All care takes place at Family A's house. Family A provides the dedicated nursery or play space, while Family B supplies portable cribs, high chairs, and diapers.
• Alternating host homes: Care alternates between houses on a fixed schedule (such as monthly or weekly). This equalizes wear and tear on living spaces.
• Split-day hosting: Mornings at one location and afternoons at another, though this requires packing gear and stroller transport.

Host families should check their homeowners or renters insurance policy regarding liability coverage for non-resident children and domestic staff on the property.

Sick policies and vacation alignment

The contract must clearly specify what happens when one child is sick. Standard nanny share agreements state that if a child has a contagious illness (such as hand, foot, and mouth disease, strep throat, or an active fever), that child stays home with their parents while the nanny cares for the healthy child at normal rates. The sick child's family still pays their normal hourly rate.

Vacation scheduling requires coordination. Contracts usually give the nanny two weeks of paid time off: one week chosen by the nanny and one week chosen jointly by the families. When one family takes personal vacation while the nanny is available, that family continues paying their share to maintain the nanny's guaranteed income. Run your numbers through our childcare calculator to budget for contingency costs.