Nanny Share Cost in St. Louis, MO (2026)
Per-family rates, hourly pay, and savings vs. solo nanny or daycare in the St. Louis metro area
A nanny share in St. Louis costs each family about $15,500 per year ($1,292/month) for infant care — 9% below the U.S. average. Two families split one nanny, paying her a combined rate of roughly $31,000/year or $14.90/hour.
Compared to hiring a solo nanny in St. Louis ($27,000/year), families save approximately $11,500/year per family by sharing — while still getting most of the perks of private, in-home care. Use our calculator with zip code 63101 for a personalized estimate.
St. Louis Nanny Share Cost by Age (2026) — Per Family
| Age Group | Annual (per family) | Monthly | Weekly |
|---|---|---|---|
| Infant (0–1) | $15,500 | $1,292 | $298 |
| Toddler (1–3) | $14,000 | $1,167 | $269 |
| Preschool (3–5) | $13,000 | $1,083 | $250 |
| School-Age (5–12) | $11,000 | $917 | $212 |
Per-family rates assume a 2-family nanny share with two kids total. Add approximately 10% to your share for employer payroll taxes (Social Security, Medicare, FUTA/SUTA, workers' comp). Sources: Care.com 2024 Cost of Care Survey, local market rates.
Hourly Rate for a Nanny Share in St. Louis
Nanny-share nannies in St. Louis typically earn more per hour than solo nannies since they're watching two kids. The combined hourly rate is split between both families:
| Rate | Hourly | Weekly (40 hrs) | Annual |
|---|---|---|---|
| Combined (both families) | $14.90/hr | $596 | $31,000 |
| Per family (each) | $7.45/hr | $298 | $15,500 |
| Solo nanny (for reference) | $12.98/hr | $519 | $27,000 |
Rates assume a 40 hr/week schedule. Combined rate equals what the nanny actually takes home (before her own taxes). Each family is also responsible for ~10% in employer payroll taxes on their share of wages.
Nanny Share vs. Solo Nanny vs. Daycare in St. Louis
| Care Type | Annual (Infant) | Monthly | vs. Nanny Share |
|---|---|---|---|
| Nanny Share (per family) | $15,500 | $1,292 | — |
| Daycare Center | $13,000 | $1,083 | −$2,500 |
| In-Home Daycare | $10,500 | $875 | −$5,000 |
| Au Pair | $22,000 | $1,833 | +$6,500 |
| Full-Time Nanny (solo) | $27,000 | $2,250 | +$11,500 |
Nanny shares sit between daycare and a solo nanny in price — perfect for parents in St. Louis who want the flexibility and personal attention of in-home care without the solo-nanny price tag.
How to Set Up a Nanny Share in St. Louis
- Find your partner family first: Post in St. Louis parent groups, Facebook neighborhood groups, or nanny-share matching sites. Match kids within 6–12 months in age.
- Agree on logistics upfront: Whose house hosts? How are sick days/vacation split? Holiday pay? Guaranteed hours?
- Draft a nanny share agreement: Written contract covering pay, hours, responsibilities, termination terms, and confidentiality. See our nanny share agreement guide.
- Handle payroll correctly: Each family is a separate household employer under IRS rules and must issue a W-2, withhold taxes, and pay employer FICA. Use a payroll service (Poppins, HomeWork Solutions) to automate.
- Pay fairly: Expect to pay a nanny share nanny 40–60% more per hour than a solo nanny for the extra workload.
- Use your Dependent Care FSA: Nanny share wages qualify — up to $5,000/year pre-tax per household ($2,500 if married filing separately).
Frequently Asked Questions
How much does a nanny share cost in St. Louis?
Each family pays about $15,500/year ($1,292/month) for a nanny share with an infant in St. Louis. The two families together pay the nanny roughly $31,000/year gross, or $14.90/hour combined.
Is a nanny share cheaper than daycare in St. Louis?
In St. Louis, nanny share costs $1,292/month per family, vs. $1,083/month for daycare. Nanny share is about $2,500/year more expensive than daycare, but offers in-home care and more flexibility.
How much should I pay a nanny share nanny per hour in St. Louis?
A reasonable combined rate is $14.90/hour (about 40–60% higher than a solo nanny's rate). Each family contributes approximately $7.45/hour, plus their share of employer payroll taxes. Adjust up for experience, certifications, or more than 2 kids.
Do I have to pay nanny taxes for a nanny share in St. Louis?
Yes. The IRS treats each family as a separate household employer in a nanny share. Both families must issue a W-2, withhold Social Security and Medicare, and pay employer FICA (7.65%) on their share of wages. Missouri also requires state unemployment and, often, workers' comp. Use a payroll service to stay compliant.
Get Your Personalized St. Louis Nanny Share Estimate
These are St. Louis metro averages. Your exact cost depends on the nanny's experience, weekly hours, and how you split expenses with your partner family.
Calculate Your Costs (Zip: 63101)