Daycare vs Nanny: Where the Math Breaks
A nanny costs $35,000–$60,000/year (salary plus taxes) versus $14,760/year for average daycare nationally. The math flips with two or more young children — two kids in full-time daycare at $1,230/month each costs $29,520/year versus a nanny who charges a flat rate. In high-cost cities, daycare for two infants can exceed $60,000/year, making a nanny cost-competitive.
For a single child, daycare wins on cost almost every time. The national average for infant center care is $1,230/month. A full-time nanny — gross wage plus employer taxes — runs $2,700/month. That's a $1,470/month premium, or $17,640/year, for in-home 1-on-1 care.
The math flips with two children. Two infant daycare spots: $2,460/month. One nanny covering both for the same $2,700: you're paying $240/month more but getting dedicated home-based care with no closing-time pressure. In high-cost states — California, Massachusetts, New York — where infant center care runs $1,800–$2,400/month per child, two spots at a center cost $3,600–$4,800/month. The nanny is suddenly a bargain.
The Employer Trap
Most families don't think of themselves as employers when they hire a nanny. They are. If you pay a household employee more than $2,700 in 2024, you must pay Social Security, Medicare, and unemployment taxes. You must provide a W-2. You must file Schedule H with your taxes. Skip any of this and you're looking at penalties, back taxes, and interest — not a great outcome.
Use a payroll service. Homepay, SurePayroll, and GTM Payroll all offer household employer plans for $800–$1,200/year. Not optional — a tax attorney will tell you the same thing.
The Sick Day Problem
Daycare has a built-in backup: if one teacher calls out sick, the center still opens and your child still has care. With a nanny, there is no backup. If your nanny is sick, you are managing childcare yourself or scrambling for a last-minute sitter. Families with nannies typically have 2–4 "backup sitter" contacts they pay at higher rates when this happens. Factor that into your cost model — it's $100–$200/month in backup coverage for most families.
Socialization Is Real
Kids in daycare centers interact with 8–20 peers every day. They learn to share, navigate group dynamics, and adjust to structure — skills that matter at kindergarten entry. Research consistently shows daycare children perform at or above home-care peers in social-emotional measures by age 4. A nanny can provide excellent 1-on-1 stimulation, but if your child is an only child who sees few other kids, consider supplementing with classes or play groups. Isolation isn't the intent of nanny care, but it's a real risk without deliberate planning.
When Nanny Makes Sense
Two or more children in care simultaneously. Irregular hours that daycare can't accommodate. An infant under 6 weeks (before most centers accept). A child with medical needs requiring 1-on-1 supervision. Parents working from home who need care in the house. Any of these tip the balance toward nanny care even at a higher per-child cost.